/* ----------------------------------------------------
   DESIGN SYSTEM - KIM LOẠI MÀU DHA (KIMLOAIMAUDHA.COM.VN)
   Style: Exaggerated Minimalism (Slate Grey + Premium Gold)
   ---------------------------------------------------- */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;500;600;700;800;900&family=Be+Vietnam+Pro:wght@300;400;500;600;700&display=swap');

:root {
    /* Spacing Tokens */
    --space-xs: 0.25rem;    /* 4px */
    --space-sm: 0.5rem;     /* 8px */
    --space-md: 1rem;       /* 16px */
    --space-lg: 1.5rem;     /* 24px */
    --space-xl: 2rem;       /* 32px */
    --space-2xl: 3rem;      /* 48px */
    --space-3xl: 5rem;      /* 80px */

    /* Shadow Depths */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.11);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-smooth: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --max-width: 1200px;
    --border-radius-sm: 3px;
    --border-radius-md: 6px;
    --border-radius-lg: 8px;
    --border-radius-xl: 12px;

    /* Light Theme (Default) Color Tokens */
    --color-primary: #475569;       /* Slate 600 */
    --color-primary-light: #64748B; /* Slate 500 */
    --color-secondary: #94A3B8;     /* Slate 400 */
    --color-cta: #C5A059;           /* Premium Gold */
    --color-cta-hover: #A88444;     /* Darker Gold */
    --color-background: #F8FAFC;    /* Slate 50 */
    --color-card-bg: #FFFFFF;
    --color-text: #1E293B;          /* Slate 800 */
    --color-text-muted: #64748B;    /* Slate 500 */
    --color-border: #E2E8F0;        /* Slate 200 */
    --color-border-hover: #CBD5E1;  /* Slate 300 */
    --color-success: #10B981;       /* Emerald 500 */
    --color-success-light: #D1FAE5; /* Emerald 100 */
    --color-navbar-bg: rgba(255, 255, 255, 0.96);
}

/* ----------------------------------------------------
   BASE STYLES
   ---------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--color-background);
    color: var(--color-text);
    font-family: 'Be Vietnam Pro', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 300ms ease, color 300ms ease;
}

h1, h2, h3, h4, h5, h6, .font-accent {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* Remove 300ms tap delay on all interactive elements */
button, a, input, select, textarea {
    touch-action: manipulation;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-background);
}

::-webkit-scrollbar-thumb {
    background: var(--color-secondary);
    border-radius: var(--border-radius-md);
    border: 2px solid var(--color-background);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-light);
}

/* Helper Utilities */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section-padding {
    padding: var(--space-3xl) 0;
}

.text-center { text-align: center; }
.text-bold { font-weight: 700; }
.text-green { color: var(--color-success); }
.text-cta { color: var(--color-cta); }
.text-strike { text-decoration: line-through; opacity: 0.6; }
.text-white { color: #FFFFFF !important; }
.text-light { color: var(--color-secondary) !important; }
.bg-light { background-color: var(--color-card-bg); }
.bg-dark { background-color: #0B0F19; color: #94A3B8; }
.w-full { width: 100%; }
.display-block { display: block; }
.hidden { display: none !important; }
.cursor-pointer { cursor: pointer; }

/* ----------------------------------------------------
   FLOATING NAVBAR
   ---------------------------------------------------- */
.navbar-wrapper {
    position: fixed;
    top: var(--space-md);
    left: var(--space-md);
    right: var(--space-md);
    z-index: 1000;
}

.navbar {
    background-color: var(--color-navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-sm) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-smooth);
}

.logo {
    display: flex;
    align-items: center;
    font-weight: 900;
    font-size: 1.4rem;
    letter-spacing: 0.05em;
    font-family: 'Barlow Condensed', sans-serif;
}

.logo-accent {
    color: var(--color-cta);
    margin-right: 2px;
}

.logo-text {
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    padding: var(--space-sm) 0;
    color: var(--color-text-muted);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-cta);
    transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-text);
}

.nav-link.active::after, .nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Buttons */
.btn-primary {
    background-color: var(--color-cta);
    color: var(--color-text);
    border: none;
    padding: 13px 28px;
    border-radius: var(--border-radius-md);
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.92rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    box-shadow: none;
    transition: background-color 0.2s ease;
    display: inline-block;
}

.btn-primary:hover {
    background-color: var(--color-cta-hover);
    transform: none;
}

.btn-primary:active {
    background-color: #8e6e35;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-primary);
    padding: 11px 26px;
    border-radius: var(--border-radius-md);
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.92rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    display: inline-block;
}

.btn-secondary:hover {
    background-color: var(--color-text);
    border-color: var(--color-text);
    color: var(--color-background);
    transform: none;
}

.btn-secondary:active {
    transform: none;
}

.btn-nav-cta {
    background-color: var(--color-text);
    color: var(--color-background);
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.btn-nav-cta:hover {
    background-color: var(--color-cta);
    color: #FFFFFF;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle .bar {
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* ----------------------------------------------------
   HERO SECTION (Exaggerated Typography)
   ---------------------------------------------------- */
.hero-section {
    position: relative;
    padding-top: calc(var(--space-3xl) + 60px);
    padding-bottom: var(--space-3xl);
    min-height: 92vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background-image: radial-gradient(circle, var(--color-border-hover) 1px, transparent 1px);
    background-size: 28px 28px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.35fr 0.65fr;
    gap: var(--space-2xl);
    align-items: center;
}

/* Left accent bar — the strongest single change for editorial weight */
.hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-left: 3px solid var(--color-cta);
    padding-left: var(--space-xl);
}

.hero-tagline {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    color: var(--color-cta);
    text-transform: uppercase;
    border: 1px solid var(--color-cta);
    border-radius: var(--border-radius-sm);
    padding: 5px 10px;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: clamp(3.6rem, 8vw, 7.2rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    word-break: keep-all;
    overflow: visible;
    text-rendering: optimizeLegibility;
}

/* Gold separator rule between title and description */
.hero-rule {
    width: 56px;
    height: 3px;
    background-color: var(--color-cta);
    margin-bottom: var(--space-lg);
    flex-shrink: 0;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
    max-width: 520px;
    font-weight: 400;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 0;
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-lg);
}

.stat-item {
    display: flex;
    flex-direction: column;
    padding-right: var(--space-xl);
}

.stat-item:last-child {
    padding-right: 0;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background-color: var(--color-border);
    flex-shrink: 0;
    margin-right: var(--space-xl);
}

.stat-number {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--color-cta);
    line-height: 1;
    margin-bottom: 3px;
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* RIGHT: visual stack */
.hero-visual {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.hero-image-card {
    position: relative;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    height: 580px;
    border: 1px solid var(--color-border);
    flex-shrink: 0;
}

/* Carousel slides — stacked with opacity-fade */
.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.9s ease;
    pointer-events: none;
}

.carousel-slide.active {
    opacity: 1;
    pointer-events: auto;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Ken Burns slow zoom on active slide */
.carousel-slide.active img {
    animation: kenburns 12s ease-out forwards;
}

@keyframes kenburns {
    from { transform: scale(1); }
    to   { transform: scale(1.06); }
}

.hero-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg) var(--space-xl);
    background: linear-gradient(transparent, rgba(11, 15, 25, 0.88));
    color: #FFFFFF;
    z-index: 1;
}

.overlay-subtitle {
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-cta);
    font-weight: 700;
    display: block;
    margin-bottom: 4px;
}

.overlay-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    display: block;
    letter-spacing: 0.02em;
}

/* Progress dots */
.carousel-dots {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 2;
}

.carousel-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: background 0.25s ease, width 0.25s ease, border-radius 0.25s ease;
}

.carousel-dot.active {
    width: 20px;
    border-radius: 3px;
    background: var(--color-cta);
}

.carousel-dot:hover:not(.active) {
    background: rgba(255, 255, 255, 0.65);
}

/* Certification badge — top-right of image */
.hero-spec-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: rgba(11, 15, 25, 0.82);
    border: 1px solid rgba(197, 160, 89, 0.6);
    border-radius: var(--border-radius-sm);
    padding: 6px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    backdrop-filter: blur(6px);
}

.spec-badge-label {
    font-size: 0.58rem;
    letter-spacing: 0.18em;
    color: var(--color-cta);
    font-weight: 700;
    text-transform: uppercase;
}

.spec-badge-value {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.05em;
}

/* Secondary image strip — ore sample below field photo */
.hero-secondary-img {
    position: relative;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    height: 88px;
    border: 1px solid var(--color-border);
    flex-shrink: 0;
}

.hero-secondary-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.55) saturate(1.2);
    transition: filter 0.3s ease;
}

.hero-secondary-img:hover img {
    filter: brightness(0.7) saturate(1.2);
}

.secondary-img-label {
    position: absolute;
    left: var(--space-lg);
    top: 50%;
    transform: translateY(-50%);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* Scroll indicator — centered below grid */
.scroll-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
    animation: bounce 2.5s infinite;
    margin: var(--space-2xl) auto 0;
    cursor: pointer;
}

.scroll-indicator:hover {
    border-color: var(--color-cta);
    color: var(--color-cta);
}

.scroll-indicator svg {
    width: 18px;
    height: 18px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-7px); }
    60% { transform: translateY(-3px); }
}

/* ----------------------------------------------------
   SECTION HEADERS
   ---------------------------------------------------- */
.section-header {
    max-width: 700px;
    margin: 0 auto var(--space-2xl) auto;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    color: var(--color-text-muted);
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

/* Gold dash before every section label — editorial rule */
.section-tag::before {
    content: '';
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-cta);
    flex-shrink: 0;
}

.section-title {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    font-weight: 900;
    color: var(--color-text);
    letter-spacing: -0.01em;
    line-height: 1.15;
    margin-bottom: var(--space-md);
    overflow: visible;
    text-rendering: optimizeLegibility;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    font-weight: 400;
    line-height: 1.65;
}

/* Dark section overrides */
.bg-dark .section-tag {
    color: rgba(255, 255, 255, 0.45);
}
.bg-dark .section-title {
    color: #FFFFFF;
}

/* ----------------------------------------------------
   CARDS & GRID LAYOUTS
   ---------------------------------------------------- */
.card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-top: 3px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    box-shadow: none;
    transition: border-top-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-top-color: var(--color-cta);
    transform: none;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.service-card {
    display: flex;
    flex-direction: column;
}

.service-icon-box {
    width: 52px;
    height: 52px;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-text);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-cta);
    margin-bottom: var(--space-lg);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.service-card:hover .service-icon-box {
    background-color: var(--color-cta);
    color: var(--color-text);
}

.service-icon {
    width: 28px;
    height: 28px;
}

.service-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.service-description {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    flex-grow: 1;
}

.service-features {
    margin-bottom: var(--space-lg);
    border-top: 1px dashed var(--color-border);
    padding-top: var(--space-md);
}

.service-features li {
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.service-features .bullet {
    color: var(--color-cta);
    font-weight: 700;
}

.service-link {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ----------------------------------------------------
   INTERACTIVE COST ESTIMATOR
   ---------------------------------------------------- */
.estimator-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-xl);
    align-items: stretch;
}

.estimator-form-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--space-md);
}

.form-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

/* Custom Styled Inputs */
.input {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 14px 16px;
    border-radius: var(--border-radius-md);
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 1rem;
    transition: var(--transition-smooth);
    width: 100%;
}

.input:focus {
    outline: none;
    border-color: var(--color-cta);
    box-shadow: 0 0 0 3px rgba(197, 160, 89, 0.15);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23475569'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 48px;
}

/* Checkbox Style */
.check-group {
    margin: var(--space-md) 0 var(--space-lg) 0;
}

.checkbox-container {
    display: block;
    position: relative;
    padding-left: 32px;
    user-select: none;
    font-size: 0.95rem;
    font-weight: 500;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 2px;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-smooth);
}

.checkbox-container:hover input ~ .checkmark {
    border-color: var(--color-cta);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--color-cta);
    border-color: var(--color-cta);
}

.checkmark::after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark::after {
    display: block;
}

.checkbox-container .checkmark::after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Estimator Results Card */
.estimator-result-card {
    background-color: var(--color-text);
    color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid var(--color-text);
    position: relative;
    overflow: hidden;
}

.result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-xl) 0;
}

.result-icon-big {
    width: 70px;
    height: 70px;
    color: var(--color-cta);
    margin-bottom: var(--space-md);
}

.result-placeholder-text {
    font-size: 1.1rem;
    color: var(--color-secondary);
    max-width: 280px;
}

.result-title {
    font-size: 1.2rem;
    color: var(--color-cta);
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.result-summary {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--space-lg);
}

.summary-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
}

.summary-value {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2.4rem;
    font-weight: 900;
    color: #FFFFFF;
    line-height: 1.1;
}

.result-divider {
    border: none;
    border-top: 1px solid var(--color-secondary);
    opacity: 0.3;
    margin-bottom: var(--space-lg);
}

.result-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    color: var(--color-secondary);
}

.detail-value {
    color: #FFFFFF;
}

.result-note {
    background-color: rgba(255, 255, 255, 0.05);
    border-left: 2px solid var(--color-cta);
    padding: var(--space-md);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--color-secondary);
    line-height: 1.5;
    margin-bottom: var(--space-lg);
}

/* ----------------------------------------------------
   PRICING TABS & TABLES
   ---------------------------------------------------- */
.tabs-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-xl);
}

.pricing-tabs {
    background-color: var(--color-border);
    padding: 6px;
    border-radius: var(--border-radius-md);
    display: flex;
    gap: 4px;
    transition: var(--transition-smooth);
}

.tab-btn {
    border: none;
    background: none;
    padding: 10px 24px;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-smooth);
}

.tab-btn.active {
    background-color: var(--color-card-bg);
    color: var(--color-cta);
    box-shadow: var(--shadow-sm);
}

.tab-panel {
    display: none;
    animation: fadeIn 300ms ease;
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Turnkey Package Cards */
.pricing-packages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.package-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-2xl) var(--space-xl);
    position: relative;
}

.package-card.highlighted {
    background-color: var(--color-text);
    border-color: var(--color-text);
    border-top: 3px solid var(--color-cta);
    box-shadow: var(--shadow-lg);
    transform: none;
}

.package-card.highlighted:hover {
    transform: none;
    box-shadow: var(--shadow-xl);
}

.badge-popular {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background-color: var(--color-cta);
    color: #FFFFFF;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 50px;
}

.package-header {
    margin-bottom: var(--space-lg);
}

.package-title {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.package-price {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--color-cta);
    line-height: 1.1;
    margin-bottom: var(--space-sm);
}

.price-unit {
    font-size: 0.9rem;
    font-weight: 500;
    font-family: 'Be Vietnam Pro', sans-serif;
    color: var(--color-text-muted);
}

.package-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.package-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin-bottom: var(--space-lg);
}

.package-divider.white {
    border-color: rgba(255, 255, 255, 0.1);
}

.package-specs {
    margin-bottom: var(--space-xl);
    flex-grow: 1;
}

.package-specs li {
    font-size: 0.92rem;
    margin-bottom: var(--space-sm);
    display: flex;
    justify-content: space-between;
}

.package-specs li span {
    font-weight: 600;
    color: var(--color-secondary);
}

.package-card.highlighted .package-specs li span {
    color: var(--color-secondary);
}

/* Detailed Table Style */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    background-color: var(--color-card-bg);
}

.pricing-table th, .pricing-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.pricing-table th {
    background-color: var(--color-background);
    color: var(--color-text);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.pricing-table tr:last-child td {
    border-bottom: none;
}

.pricing-table tbody tr:hover {
    background-color: var(--color-background);
}

.table-group-header {
    background-color: rgba(197, 160, 89, 0.04);
}

.table-group-header td {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    color: var(--color-cta);
    font-size: 1rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--color-border);
}

/* ----------------------------------------------------
   TIMELINE / WORKFLOW
   ---------------------------------------------------- */
.workflow-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl) 0;
    display: flow-root;
}

/* Central spine line */
.workflow-timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--color-border);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: var(--space-md) 0;
    position: relative;
    width: 50%;
    clear: both;
}

.timeline-item:nth-child(even) {
    float: right;
    padding-left: var(--space-2xl);
}

.timeline-item:nth-child(odd) {
    float: left;
    padding-right: var(--space-2xl);
    text-align: right;
}

.timeline-badge {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--color-cta);
    color: #FFFFFF;
    position: absolute;
    top: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 0 0 6px var(--color-background);
    z-index: 2;
}

.timeline-item:nth-child(odd) .timeline-badge {
    right: 0;
    margin-right: -22px;
}

.timeline-item:nth-child(even) .timeline-badge {
    left: 0;
    margin-left: -22px;
}

.timeline-panel {
    position: relative;
}

.timeline-item:nth-child(even) .timeline-panel {
    text-align: left;
}

.step-title {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.step-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* Clear fixer for floated layout */
.workflow-timeline::before,
.workflow-timeline::after {
    content: "";
    display: table;
}

.workflow-timeline::after {
    clear: both;
}

/* ----------------------------------------------------
   PORTFOLIO / PROJECTS
   ---------------------------------------------------- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.project-item {
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
}

.project-img-box {
    width: 100%;
    height: 260px;
    overflow: hidden;
    position: relative;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-item:hover .project-img {
    transform: scale(1.06);
}

.project-info {
    padding: var(--space-lg);
}

.project-location {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    display: block;
    margin-bottom: var(--space-xs);
}

.project-name {
    font-size: 1.3rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.project-meta {
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

/* ----------------------------------------------------
   PRODUCTS PAGE
   ---------------------------------------------------- */
.product-filter-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.product-filter-tabs {
    display: flex;
    gap: var(--space-xs);
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 5px;
    flex-wrap: wrap;
    justify-content: center;
}

.product-filter-btn {
    padding: 10px var(--space-lg);
    background: none;
    border: none;
    border-radius: calc(var(--border-radius-lg) - 4px);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
}

.product-filter-btn:hover {
    color: var(--color-text);
    background-color: var(--color-background);
}

.product-filter-btn.active {
    background-color: var(--color-text);
    color: var(--color-background);
}

.filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    background-color: var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: 10px;
    line-height: 1;
}

.product-filter-btn.active .filter-count {
    background-color: var(--color-cta);
    color: #FFFFFF;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    align-items: start;
}

.product-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease, border-top-color 0.2s ease;
    border-top: 3px solid var(--color-border);
}

/* Color-code by mineral group — persists on hover */
.product-card[data-group="color-metal"],
.product-card[data-group="color-metal"]:hover { border-top-color: var(--color-cta); }
.product-card[data-group="black-metal"],
.product-card[data-group="black-metal"]:hover { border-top-color: var(--color-text); }
.product-card[data-group="rare-earth"],
.product-card[data-group="rare-earth"]:hover  { border-top-color: #6d5fd6; }

.product-card:hover {
    transform: none;
    box-shadow: var(--shadow-lg);
}

.product-card[data-stock="out"] {
    opacity: 0.7;
}

.product-img-wrap {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: var(--color-border);
    flex-shrink: 0;
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-img {
    transform: scale(1.06);
}

.product-badge {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    padding: 4px 10px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: var(--border-radius-sm);
    /* shadow ensures legibility over bright image areas */
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.product-badge.color-metal {
    background-color: var(--color-cta);   /* #C5A059 gold */
    color: #1A1200;                        /* near-black — 6.1:1 contrast on gold */
}

.product-badge.black-metal {
    background-color: #1E293B;            /* dark navy */
    color: #F1F5F9;                        /* slate-100 — 12.5:1 */
}

.product-badge.rare-earth {
    background-color: #4338ca;            /* indigo-700 — darker than #6d5fd6 */
    color: #EEF2FF;                        /* indigo-50 — 8.2:1 */
}

.product-stock-badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: 3px 8px;
    font-size: 0.68rem;
    font-weight: 700;
    border-radius: var(--border-radius-sm);
    letter-spacing: 0.04em;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.product-stock-badge.in-stock {
    background-color: #166534;            /* green-800 */
    color: #DCFCE7;                        /* green-100 — 9.4:1 */
}

.product-stock-badge.out-of-stock {
    background-color: #991B1B;            /* red-800 */
    color: #FEE2E2;                        /* red-100 — 8.1:1 */
}

.product-body {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-name {
    font-size: 1.15rem;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}

.product-grade {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--color-cta);
    margin-bottom: var(--space-sm);
}

.product-grade svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.product-desc {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-origin {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.product-origin svg {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
}

.product-footer {
    margin-top: auto;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.product-price {
    display: flex;
    align-items: baseline;
    gap: 3px;
}

.price-amount {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-cta);
    letter-spacing: -0.01em;
}

.product-price .price-unit {
    font-size: 0.78rem;
    font-weight: 400;
    font-family: 'Be Vietnam Pro', sans-serif;
    color: var(--color-text-muted);
}

.product-actions {
    display: flex;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.btn-sm {
    padding: 8px 14px;
    font-size: 0.82rem;
    min-height: 36px;
}

/* Products page featured badge */
.product-card[data-featured="true"] .product-img-wrap::after {
    content: '★ NỔI BẬT';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: var(--color-cta);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: var(--space-sm) var(--space-sm) var(--space-xs);
    text-align: center;
}

/* ----------------------------------------------------
   CONTACT SECTION
   ---------------------------------------------------- */
.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-xl);
    align-items: stretch;
}

.contact-info-card {
    background-color: var(--color-text);
    color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: var(--space-2xl) var(--space-xl);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-text);
}

.info-title {
    font-size: 1.3rem;
    color: var(--color-cta);
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.info-desc {
    font-size: 1rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-xl);
}

.info-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.info-item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.info-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-md);
    background-color: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-cta);
    flex-shrink: 0;
}

.info-icon svg {
    width: 20px;
    height: 20px;
}

.info-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-secondary);
    margin-bottom: 2px;
}

.info-text {
    font-size: 1rem;
    color: #FFFFFF;
}

.hover-underline:hover {
    text-decoration: underline;
    color: var(--color-cta);
}

/* Promises box */
.promises-box {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px dashed rgba(255, 255, 255, 0.1);
    padding: var(--space-lg);
    border-radius: var(--border-radius-md);
    margin-top: auto;
}

.promises-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-cta);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.promises-list li {
    font-size: 0.88rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-xs);
}

.promises-list li:last-child {
    margin-bottom: 0;
}

/* Form Styles */
.contact-form-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-2xl) var(--space-xl);
    box-shadow: var(--shadow-md);
}

textarea.input {
    resize: vertical;
}

.required {
    color: var(--color-cta);
    margin-left: 2px;
}

/* ----------------------------------------------------
   FOOTER
   ---------------------------------------------------- */
.footer {
    background-color: #0B0F19; /* Standard deep slate black for both modes */
    color: #94A3B8;
    padding-top: var(--space-3xl);
    border-top: 1px solid #1F2937;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.brand-bio {
    font-size: 0.9rem;
    color: #64748B;
    margin: var(--space-md) 0 var(--space-lg) 0;
    line-height: 1.5;
    max-width: 280px;
}

.footer-socials {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-md);
    background-color: #111827;
    border: 1px solid #1F2937;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94A3B8;
    transition: var(--transition-smooth);
}

.social-link:hover {
    background-color: var(--color-cta);
    color: #FFFFFF;
    border-color: var(--color-cta);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

.footer-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
}

.footer-list li {
    margin-bottom: var(--space-sm);
}

.footer-list a {
    font-size: 0.9rem;
    color: #94A3B8;
}

.footer-list a:hover {
    color: var(--color-cta);
    padding-left: 4px;
}

.footer-info-text {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

.footer-bottom {
    border-top: 1px solid #1F2937;
    padding: var(--space-lg) 0;
    font-size: 0.85rem;
    color: #64748B;
}

/* ----------------------------------------------------
   HOMEPAGE PRODUCTS SECTION
   ---------------------------------------------------- */
.home-products-header {
    margin-bottom: var(--space-2xl);
}

/* Controls row: underline tabs on left, search on right */
.home-products-controls {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

/* TABS — underline style, overlap the border-bottom */
.home-filter-tabs {
    display: flex;
    gap: 0;
    flex-wrap: wrap;
}

.home-filter-btn {
    display: flex;
    align-items: baseline;
    gap: 5px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: var(--space-sm) var(--space-lg) calc(var(--space-sm) + 1px);
    margin-bottom: -1px;
    cursor: pointer;
    transition: color 0.18s ease, border-bottom-color 0.18s ease;
    white-space: nowrap;
}

.home-filter-btn:first-child {
    padding-left: 0;
}

.home-filter-btn:hover {
    color: var(--color-text);
}

.home-filter-btn.active {
    color: var(--color-text);
    border-bottom-color: var(--color-cta);
}

/* Count number inline — subdued by default, gold when active */
.home-filter-btn em {
    font-style: normal;
    font-size: 0.68rem;
    font-weight: 400;
    letter-spacing: 0;
    font-family: 'Be Vietnam Pro', sans-serif;
    color: var(--color-text-muted);
    line-height: 1;
}

.home-filter-btn.active em {
    color: var(--color-cta);
}

/* SEARCH — underline-only, matches tab visual language */
.home-search-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: calc(var(--space-sm) + 2px);
    margin-bottom: -1px;
    transition: border-bottom-color 0.18s ease;
    flex-shrink: 0;
}

.home-search-wrap:focus-within {
    border-bottom-color: var(--color-cta);
}

.home-search-wrap svg {
    width: 15px;
    height: 15px;
    color: var(--color-text-muted);
    flex-shrink: 0;
    transition: color 0.18s ease;
}

.home-search-wrap:focus-within svg {
    color: var(--color-cta);
}

.home-search-wrap input {
    background: none;
    border: none;
    outline: none;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.88rem;
    color: var(--color-text);
    width: 200px;
}

.home-search-wrap input::placeholder {
    color: var(--color-text-muted);
}

/* Clear (×) button shown by browser for type=search */
.home-search-wrap input::-webkit-search-cancel-button {
    cursor: pointer;
    opacity: 0.5;
}

/* Footer: quiet right-aligned CTA */
.home-products-footer {
    margin-top: var(--space-2xl);
    display: flex;
    justify-content: flex-end;
}

.home-catalog-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
    transition: color 0.18s ease, border-bottom-color 0.18s ease;
}

.home-catalog-link:hover {
    color: var(--color-cta);
    border-bottom-color: var(--color-cta);
}

.home-catalog-link svg {
    width: 13px;
    height: 13px;
}

/* Mobile */
@media (max-width: 768px) {
    .home-products-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .home-search-wrap {
        width: 100%;
        margin-bottom: 0;
        border-bottom-color: var(--color-border);
        padding-bottom: var(--space-sm);
    }

    .home-search-wrap input {
        width: 100%;
    }

    .home-filter-btn {
        padding-left: 0;
        padding-right: var(--space-md);
        font-size: 0.78rem;
    }

    .home-products-footer {
        justify-content: center;
    }
}

/* ----------------------------------------------------
   MODAL DIALOG & BACKDROP
   ---------------------------------------------------- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(11, 15, 25, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: var(--transition-smooth);
}

.modal {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-xl);
    padding: var(--space-2xl) var(--space-xl);
    max-width: 480px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    animation: modalScaleUp 350ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalScaleUp {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.success-icon-box {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background-color: var(--color-success-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-success);
    margin: 0 auto var(--space-lg) auto;
}

.success-icon {
    width: 44px;
    height: 44px;
}

.modal-title {
    font-size: 1.3rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
    letter-spacing: 0.05em;
}

.modal-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

/* ----------------------------------------------------
   ORDER REQUEST MODAL
   ---------------------------------------------------- */
.order-modal {
    max-width: 520px;
    border-radius: var(--border-radius-lg);
    border-top: 3px solid var(--color-cta);
    padding: var(--space-xl);
    position: relative;
}

/* Badge inside modal is inline — override absolute positioning from card context */
.order-modal-badge.product-badge {
    position: static;
    flex-shrink: 0;
}

/* Product header strip */
.order-modal-product {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.order-modal-product-label {
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 3px;
    font-family: 'Be Vietnam Pro', sans-serif;
}

.order-modal-product-name {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.01em;
    line-height: 1.1;
}

.order-modal-rule {
    height: 1px;
    background: var(--color-border);
    margin-bottom: var(--space-xl);
}

/* Form fields — underline style, matches search bar language */
.order-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.order-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.order-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.order-label {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    font-family: 'Be Vietnam Pro', sans-serif;
}

.order-input {
    background: none;
    border: none;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
    outline: none;
    padding: var(--space-sm) 0;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.95rem;
    color: var(--color-text);
    width: 100%;
    transition: border-bottom-color 0.18s ease;
}

.order-input:focus {
    border-bottom-color: var(--color-cta);
}

.order-input::placeholder {
    color: var(--color-text-muted);
    font-weight: 300;
}

.order-textarea {
    resize: vertical;
    min-height: 72px;
}

/* Quantity + unit inline */
.order-qty-row {
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
}

.order-qty-input {
    flex: 1;
}

.order-unit-select {
    background: none;
    border: none;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
    outline: none;
    padding: var(--space-sm) 0;
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    width: 56px;
    transition: border-bottom-color 0.18s ease;
}

.order-unit-select:focus {
    border-bottom-color: var(--color-cta);
}

/* Inline validation errors */
.order-error {
    font-size: 0.72rem;
    color: #EF4444;
    min-height: 16px;
    display: block;
}

/* Actions row */
.order-modal-actions {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-top: var(--space-sm);
}

.order-submit-btn {
    flex: 1;
}

.order-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.order-cancel-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    text-transform: uppercase;
    padding: 0;
    transition: color 0.18s ease;
}

.order-cancel-btn:hover {
    color: var(--color-text);
}

/* Close × button — top-right corner */
.order-close-btn {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    transition: color 0.18s ease, background-color 0.18s ease;
}

.order-close-btn:hover {
    color: var(--color-text);
    background-color: var(--color-border);
}

.order-close-btn svg {
    width: 16px;
    height: 16px;
}

/* Success state */
.order-success {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-md);
}

.order-success-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--color-success-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-success);
    margin: 0 auto var(--space-lg);
}

.order-success-icon svg {
    width: 28px;
    height: 28px;
}

.order-success-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.01em;
    margin-bottom: var(--space-sm);
}

.order-success-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: var(--space-xl);
}

@media (max-width: 768px) {
    .order-modal {
        padding: var(--space-lg);
        max-height: 92vh;
        overflow-y: auto;
    }

    .order-form-row {
        grid-template-columns: 1fr;
    }
}

/* ----------------------------------------------------
   SCROLL TO TOP BUTTON
   ---------------------------------------------------- */
.scroll-top-btn {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-md);
    background-color: var(--color-cta);
    color: #FFFFFF;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    z-index: 999;
    transition: var(--transition-smooth);
}

.scroll-top-btn:hover {
    background-color: var(--color-cta-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.scroll-top-btn svg {
    width: 18px;
    height: 18px;
}

/* ----------------------------------------------------
   RESPONSIVE DESIGN (BREAKPOINTS)
   ---------------------------------------------------- */

/* Desktop & Laptop (1440px / 1024px) are handled gracefully by grid layouts */

/* Tablet Viewports (max-width: 1024px) */
@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }

    .hero-content {
        align-items: center;
        border-left: none;
        padding-left: 0;
    }

    .hero-rule {
        margin: 0 auto var(--space-lg);
    }

    .hero-description {
        max-width: 100%;
    }

    .hero-image-card {
        height: 440px;
    }

    .hero-secondary-img {
        height: 80px;
    }

    .stat-item {
        align-items: center;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .estimator-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-packages-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
        gap: var(--space-xl);
    }
    
    .package-card.highlighted {
        transform: none;
    }

    .package-card.highlighted:hover {
        transform: none;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
}

/* Mobile Viewports (max-width: 768px) */
@media (max-width: 768px) {
    /* Reset font-size to 16px to prevent iOS auto-zoom on inputs */
    html {
        font-size: 16px;
    }

    /* Prevent accidental pull-to-refresh; add clearance for sticky bottom bar */
    body {
        overscroll-behavior-y: contain;
        padding-bottom: 76px;
    }

    /* Inner pages (non-hero): override inline padding-top for mobile navbar */
    main[style*="padding-top"] {
        padding-top: 70px !important;
    }

    /* --- Navbar --- */
    .navbar-wrapper {
        top: 0;
        left: 0;
        right: 0;
    }

    .navbar {
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-top: none;
        padding: var(--space-sm) var(--space-lg);
    }

    /* Hide desktop CTA — replaced by sticky bottom bar */
    .nav-actions {
        display: none;
    }

    /* Animated mobile menu: slide + fade instead of display:none snap */
    .nav-links-wrapper {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background-color: var(--color-card-bg);
        border-bottom: 1px solid var(--color-border);
        padding: var(--space-sm) 0;
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        pointer-events: none;
        transition: opacity 200ms ease, transform 200ms ease, visibility 0s linear 200ms;
        z-index: 998;
    }

    .nav-links-wrapper.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
        transition: opacity 200ms ease, transform 200ms ease;
    }

    .nav-links {
        flex-direction: column;
        gap: 0;
        text-align: center;
    }

    /* Larger touch targets for mobile nav links (min 48px height) */
    .nav-links li a.nav-link {
        display: block;
        padding: 14px var(--space-lg);
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links li:last-child a.nav-link {
        border-bottom: none;
    }

    .menu-toggle {
        display: flex;
    }

    /* Hamburger → X animation */
    .menu-toggle.open .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .menu-toggle.open .bar:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.open .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* --- Spacing: reduce section padding on mobile --- */
    .section-padding {
        padding: var(--space-2xl) 0;
    }

    /* --- Container: tighter horizontal padding --- */
    .container {
        padding: 0 var(--space-md);
    }

    /* --- Section tag: hide line on mobile to avoid overflow --- */
    .section-tag::before {
        display: none;
    }

    .section-tag {
        font-size: 0.68rem;
        letter-spacing: 0.2em;
    }

    /* --- Hero: more compact for mobile --- */
    .hero-section {
        padding-top: 80px;
        min-height: auto;
        padding-bottom: var(--space-xl);
        background-size: 20px 20px;
    }

    /* On mobile: collapse left accent bar — content is centered */
    .hero-content {
        border-left: none;
        padding-left: 0;
        align-items: center;
        text-align: center;
    }

    .hero-rule {
        margin: 0 auto var(--space-lg);
    }

    .hero-tagline {
        font-size: 0.68rem;
    }

    .hero-image-card {
        height: 280px;
    }

    /* Hide secondary image strip on mobile */
    .hero-secondary-img {
        display: none;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-lg);
        justify-content: center;
    }

    .stat-divider {
        display: none;
    }

    .stat-item {
        padding-right: 0;
        align-items: center;
    }

    /* --- Services --- */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* --- Timeline --- */
    .workflow-timeline::after {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 50px !important;
        padding-right: 0 !important;
        text-align: left !important;
    }

    .timeline-item:nth-child(odd) .timeline-badge,
    .timeline-item:nth-child(even) .timeline-badge {
        left: 20px;
        right: auto;
        margin-left: -22px;
        margin-right: 0;
    }

    /* --- Portfolio --- */
    .portfolio-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    /* --- Products --- */
    .products-grid {
        grid-template-columns: 1fr;
        max-width: 440px;
        margin: 0 auto;
    }

    .product-filter-tabs {
        gap: 4px;
    }

    .product-filter-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    /* --- Footer --- */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    /* Larger social link touch targets (min 44×44px) */
    .social-link {
        width: 44px;
        height: 44px;
    }

    /* Footer links: larger tap area */
    .footer-list a {
        display: block;
        padding: var(--space-xs) 0;
        font-size: 1rem;
    }

    /* Tab buttons: more tap-friendly */
    .tab-btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    /* --- Scroll-to-top: lift above sticky bottom bar --- */
    .scroll-top-btn {
        bottom: calc(76px + var(--space-md));
    }
}

/* Small Screens (max-width: 480px) */
@media (max-width: 480px) {
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .hero-ctas {
        flex-direction: column;
        width: 100%;
        gap: var(--space-sm);
    }

    .hero-ctas a {
        text-align: center;
        width: 100%;
        padding: 14px 24px;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    /* Further reduce hero image on very small screens */
    .hero-image-card {
        height: 220px;
    }

    .pricing-tabs {
        flex-direction: column;
        width: 100%;
    }

    .tab-btn {
        width: 100%;
        text-align: center;
    }
}

/* ----------------------------------------------------
   MOBILE STICKY BOTTOM CTA BAR
   Only visible on mobile ≤ 768px — drives call + quote conversion
   ---------------------------------------------------- */
.mobile-cta-bar {
    display: none;
}

@media (max-width: 768px) {
    .mobile-cta-bar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background-color: var(--color-card-bg);
        border-top: 1px solid var(--color-border);
        padding: var(--space-sm) var(--space-md);
        gap: var(--space-sm);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
        padding-bottom: max(var(--space-sm), env(safe-area-inset-bottom));
    }

    .mobile-cta-call {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        padding: 12px var(--space-md);
        min-height: 48px;
        flex: 1;
        border-radius: var(--border-radius-md);
        background-color: var(--color-background);
        border: 2px solid var(--color-primary);
        color: var(--color-text);
        font-family: 'Be Vietnam Pro', sans-serif;
        font-size: 0.85rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.04em;
        cursor: pointer;
        touch-action: manipulation;
        transition: var(--transition-smooth);
    }

    .mobile-cta-call:hover,
    .mobile-cta-call:active {
        background-color: var(--color-primary);
        color: #FFFFFF;
    }

    .mobile-cta-call svg {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
    }

    .mobile-cta-quote {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 12px var(--space-md);
        min-height: 48px;
        flex: 2;
        border-radius: var(--border-radius-md);
        background-color: var(--color-cta);
        color: #FFFFFF;
        font-family: 'Be Vietnam Pro', sans-serif;
        font-size: 0.9rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.04em;
        text-align: center;
        cursor: pointer;
        touch-action: manipulation;
        transition: var(--transition-smooth);
        box-shadow: 0 4px 14px rgba(197, 160, 89, 0.3);
    }

    .mobile-cta-quote:hover,
    .mobile-cta-quote:active {
        background-color: var(--color-cta-hover);
    }
}

/* Reduced Motion Respect */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-delay: -1ms !important;
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        background-attachment: initial !important;
        scroll-behavior: auto !important;
        transition-duration: 0s !important;
        transition-delay: 0s !important;
    }
}