/* ============================================
   TUFF TENDERS — Industrial Luxe
   Dark charcoal + teal/turquoise accents
   Typography: Outfit (display) + DM Serif Display (accents)
   ============================================ */

:root {
    --bg-dark: #0e1012;
    --bg-section: #141618;
    --bg-card: #1a1d20;
    --bg-elevated: #22262a;
    --teal: #5ac4be;
    --teal-bright: #6ee7df;
    --teal-dim: #3a8f8a;
    --teal-glow: rgba(90, 196, 190, 0.15);
    --silver: #c8cdd3;
    --silver-dim: #8a9199;
    --white: #f0f2f4;
    --red-dim: #c45a5a;
    --green-dim: #5ac47a;
    --font-display: 'Outfit', sans-serif;
    --font-serif: 'DM Serif Display', serif;
    --container: 1200px;
    --radius: 8px;
    --radius-lg: 16px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-display);
    background: var(--bg-dark);
    color: var(--silver);
    line-height: 1.6;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.section-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Section Tags ---- */
.section-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 20px;
    position: relative;
    padding-left: 28px;
}
.section-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 18px;
    height: 1px;
    background: var(--teal);
}
.section-tag-light { color: var(--teal-bright); }
.section-tag-light::before { background: var(--teal-bright); }

.section-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 24px;
}
.section-title em {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--teal);
    font-weight: 400;
}
.section-title-light { color: var(--white); }

/* ============ NAV ============ */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: background 0.3s, backdrop-filter 0.3s, padding 0.3s;
}
.nav.scrolled {
    background: rgba(14, 16, 18, 0.85);
    backdrop-filter: blur(20px);
    padding: 10px 0;
    border-bottom: 1px solid rgba(90, 196, 190, 0.1);
}
.nav-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.logo-tuff {
    font-weight: 900;
    font-size: 22px;
    letter-spacing: 4px;
    color: var(--white);
}
.logo-tenders {
    font-weight: 300;
    font-size: 14px;
    letter-spacing: 6px;
    color: var(--teal);
    text-transform: uppercase;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-links a {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: var(--silver-dim);
    transition: color 0.25s;
}
.nav-links a:hover { color: var(--white); }
.nav-cta {
    background: var(--teal);
    color: var(--bg-dark) !important;
    padding: 8px 20px;
    border-radius: 100px;
    font-weight: 700 !important;
    letter-spacing: 0.5px;
    transition: background 0.25s, transform 0.2s !important;
}
.nav-cta:hover { background: var(--teal-bright); transform: translateY(-1px); }
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: transform 0.3s, opacity 0.3s;
}

/* ============ HERO ============ */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
    max-width: var(--container);
    margin: 0 auto;
    gap: 40px;
}
.hero-grain {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px;
}
.hero-content { z-index: 2; }
.hero-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--teal);
    border: 1px solid var(--teal-dim);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.2s;
}
.hero-title {
    font-family: var(--font-display);
    font-weight: 900;
    line-height: 1.0;
    margin-bottom: 28px;
}
.hero-line {
    display: block;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
}
.hero-line-1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    color: var(--silver);
    font-weight: 300;
    letter-spacing: -1px;
    animation-delay: 0.3s;
}
.hero-line-2 {
    font-size: clamp(3.5rem, 8vw, 7rem);
    color: var(--white);
    animation-delay: 0.5s;
}
.hero-line-2 em {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--teal);
}
.hero-line-3 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    color: var(--silver);
    font-weight: 300;
    letter-spacing: -1px;
    animation-delay: 0.7s;
}
.hero-sub {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--silver-dim);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 500px;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.9s;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 1.1s;
}
.hero-image {
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fadeIn 1.2s ease forwards 0.6s;
}
.hero-image img {
    width: 100%;
    filter: drop-shadow(0 40px 80px rgba(0,0,0,0.5));
    transform: rotate(-3deg);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-image:hover img {
    transform: rotate(0deg) scale(1.03);
}
.hero-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(ellipse, var(--teal-glow) 0%, transparent 70%);
    z-index: -1;
}
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0;
    animation: fadeIn 1s ease forwards 1.5s;
}
.hero-scroll span {
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--silver-dim);
}
.hero-scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--teal), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 32px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 100px;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-primary {
    background: var(--teal);
    color: var(--bg-dark);
}
.btn-primary:hover {
    background: var(--teal-bright);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(90, 196, 190, 0.25);
}
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.2);
}
.btn-outline:hover {
    border-color: var(--teal);
    color: var(--teal);
    transform: translateY(-2px);
}
.btn-full { width: 100%; justify-content: center; }

/* ============ STATS ============ */
.stats {
    background: var(--bg-section);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: 40px 0;
}
.stats-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}
.stat {
    text-align: center;
    min-width: 120px;
}
.stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
}
.stat-unit {
    font-size: 1rem;
    font-weight: 400;
    color: var(--teal);
    margin-left: 2px;
}
.stat-label {
    display: block;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--silver-dim);
    margin-top: 4px;
}
.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.08);
}

/* ============ ABOUT ============ */
.about {
    padding: 120px 0;
    background: var(--bg-dark);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.about-lead {
    font-size: 1.2rem;
    color: var(--white);
    line-height: 1.6;
    margin-bottom: 20px;
}
.about-text p {
    margin-bottom: 16px;
    font-size: 1rem;
    line-height: 1.8;
}
.about-image {
    position: relative;
}
.about-image img {
    border-radius: var(--radius-lg);
    filter: drop-shadow(0 20px 60px rgba(0,0,0,0.4));
}
.about-image-accent {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    border: 1px solid var(--teal-dim);
    border-radius: var(--radius-lg);
    opacity: 0.3;
    z-index: -1;
}

/* ============ WHY ALUMINUM ============ */
.why {
    padding: 120px 0;
    background: var(--bg-section);
    position: relative;
    overflow: hidden;
}
.why-grain {
    position: absolute;
    inset: 0;
    opacity: 0.015;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}
.why-header {
    text-align: center;
    margin-bottom: 64px;
}
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.why-card {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.why-card:hover {
    border-color: rgba(90, 196, 190, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.why-card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    color: var(--teal);
}
.why-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}
.why-card p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--silver-dim);
}

/* ============ SPECS ============ */
.specs {
    padding: 120px 0;
    background: var(--bg-dark);
}
.specs-header {
    text-align: center;
    margin-bottom: 64px;
}
.specs-intro {
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.05rem;
    color: var(--silver-dim);
}
.specs-showcase {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: start;
}
.specs-image {
    position: relative;
}
.specs-image img {
    width: 100%;
    filter: drop-shadow(0 20px 60px rgba(0,0,0,0.4));
}
.specs-details {
    display: flex;
    flex-direction: column;
    gap: 32px;
}
.specs-group h3 {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(90, 196, 190, 0.15);
}
.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 0.9rem;
}
.spec-row span:first-child { color: var(--silver-dim); }
.spec-row span:last-child { color: var(--white); font-weight: 600; }

/* ============ FEATURES ============ */
.features {
    padding: 80px 0;
    background: var(--bg-section);
    border-top: 1px solid rgba(255,255,255,0.05);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.feature-block {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.04);
    transition: border-color 0.3s, transform 0.3s;
}
.feature-block:hover {
    border-color: rgba(90, 196, 190, 0.15);
    transform: translateY(-4px);
}
.feature-block img {
    width: 100%;
    height: 220px;
    object-fit: contain;
    background: var(--bg-elevated);
    padding: 20px;
}
.feature-block-text {
    padding: 28px;
}
.feature-block-text h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}
.feature-block-text p {
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--silver-dim);
}

/* ============ GALLERY ============ */
.gallery {
    padding: 120px 0;
    background: var(--bg-dark);
}
.gallery-header {
    margin-bottom: 48px;
}
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.gallery-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-section);
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.gallery-item:hover { transform: scale(1.02); }
.gallery-item-wide { grid-column: span 2; }
.gallery-item img {
    width: 100%;
    height: 280px;
    object-fit: contain;
    padding: 24px;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0; right: 0;
    padding: 16px 20px;
    background: linear-gradient(to top, rgba(14,16,18,0.9), transparent);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--silver-dim);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s, transform 0.3s;
}
.gallery-item:hover .gallery-caption { opacity: 1; transform: translateY(0); }

/* ============ COMPARE ============ */
.compare {
    padding: 120px 0;
    background: var(--bg-section);
    position: relative;
}
.compare-grain {
    position: absolute;
    inset: 0;
    opacity: 0.015;
    background: radial-gradient(ellipse at 30% 50%, var(--teal-glow), transparent 60%);
}
.compare-header {
    text-align: center;
    margin-bottom: 48px;
}
.compare-intro {
    max-width: 500px;
    margin: 0 auto;
    font-size: 1.05rem;
    color: var(--silver-dim);
}
.compare-table-wrap {
    max-width: 700px;
    margin: 0 auto 48px;
    overflow-x: auto;
}
.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}
.compare-table th,
.compare-table td {
    padding: 16px 20px;
    text-align: left;
}
.compare-table thead th {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-bottom: 2px solid rgba(255,255,255,0.08);
}
.compare-table tbody td {
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.compare-table tbody tr:hover td { background: rgba(255,255,255,0.02); }
.compare-col-rib { color: var(--silver-dim); text-align: center; }
.compare-col-tuff { color: var(--teal-bright); font-weight: 600; text-align: center; }
.compare-total td {
    border-top: 2px solid rgba(90, 196, 190, 0.2) !important;
    font-weight: 800;
    font-size: 1.15rem;
    padding-top: 20px;
}
.compare-total .compare-col-rib { color: var(--red-dim); }
.compare-total .compare-col-tuff { color: var(--teal-bright); font-size: 1.3rem; }

.compare-verdict {
    text-align: center;
    margin-bottom: 64px;
}
.compare-save {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: rgba(90, 196, 190, 0.08);
    border: 1px solid rgba(90, 196, 190, 0.2);
    border-radius: var(--radius-lg);
    padding: 32px 64px;
}
.compare-save-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--teal);
}
.compare-save-amount {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--teal-bright);
    line-height: 1.1;
}
.compare-save-sub {
    font-size: 1rem;
    color: var(--silver-dim);
}

.compare-features {
    max-width: 700px;
    margin: 0 auto;
}
.compare-features h3 {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 24px;
    text-align: center;
}
.compare-feat-grid {
    display: flex;
    flex-direction: column;
}
.compare-feat-row {
    display: grid;
    grid-template-columns: 1fr 120px 120px;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 0.9rem;
}
.compare-feat-name { color: var(--silver); }
.compare-feat-rib { text-align: center; color: var(--silver-dim); }
.compare-feat-tuff { text-align: center; color: var(--teal-bright); font-weight: 600; }

/* ============ CHARTER ============ */
.charter {
    padding: 100px 0;
    background: var(--bg-dark);
    border-top: 1px solid rgba(255,255,255,0.05);
}
.charter-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 64px;
    align-items: center;
}
.charter-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 28px;
    color: var(--silver);
}
.charter-stats {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.charter-stat {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    text-align: center;
    transition: border-color 0.3s;
}
.charter-stat:hover { border-color: rgba(90, 196, 190, 0.2); }
.charter-stat-num {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--teal-bright);
    line-height: 1.1;
}
.charter-stat-label {
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--silver-dim);
    margin-top: 4px;
}

/* ============ CONTACT ============ */
.contact {
    padding: 120px 0;
    background: var(--bg-section);
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}
.contact-info p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 32px;
}
.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.contact-detail {
    display: flex;
    flex-direction: column;
}
.contact-detail-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: 4px;
}
.contact-detail a {
    color: var(--white);
    transition: color 0.25s;
}
.contact-detail a:hover { color: var(--teal); }

.contact-form {
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 40px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--silver-dim);
    margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    color: var(--white);
    font-family: var(--font-display);
    font-size: 0.95rem;
    transition: border-color 0.25s;
    outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--teal);
}
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238a9199' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--silver-dim);
    margin-top: 12px;
}

/* ============ FOOTER ============ */
.footer {
    padding: 60px 0;
    background: var(--bg-dark);
    border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}
.footer-brand {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}
.footer-tagline {
    font-size: 0.85rem;
    color: var(--silver-dim);
    margin-left: 16px;
}
.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a {
    font-size: 13px;
    color: var(--silver-dim);
    transition: color 0.25s;
}
.footer-links a:hover { color: var(--teal); }
.footer-legal {
    width: 100%;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 24px;
}
.footer-legal p {
    font-size: 0.75rem;
    color: rgba(138, 145, 153, 0.5);
}

/* ============ ANIMATIONS ============ */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.3); transform-origin: top; }
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .hero { grid-template-columns: 1fr; text-align: center; padding-bottom: 120px; }
    .hero-sub { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-image { order: -1; max-width: 400px; margin: 0 auto; }
    .hero-image img { transform: none; }
    .hero-scroll { display: none; }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-image { order: -1; }
    .specs-showcase { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .charter-inner { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: rgba(14, 16, 18, 0.97);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(90, 196, 190, 0.1);
    }
    .nav-links.open { display: flex; }
    .nav-toggle { display: flex; }
    .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.open span:nth-child(2) { opacity: 0; }
    .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .why-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-item-wide { grid-column: span 2; }
    .stats-inner { gap: 24px; }
    .stat-divider { display: none; }
    .stat { min-width: 80px; }
    .compare-feat-row { grid-template-columns: 1fr 80px 80px; font-size: 0.8rem; }
}

@media (max-width: 480px) {
    .gallery-grid { grid-template-columns: 1fr; }
    .gallery-item-wide { grid-column: span 1; }
    .compare-save { padding: 24px 32px; }
    .compare-save-amount { font-size: 2.5rem; }
    .hero-line-2 { font-size: 3rem; }
}