/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #0f1419;
    --color-surface: #1a2332;
    --color-surface-2: #243044;
    --color-text: #e8eef5;
    --color-text-muted: #9aadc0;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-accent: #f59e0b;
    --color-border: #2d3a4f;
    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --radius: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 88px 0;
}

.section-alt {
    background: var(--color-surface);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-surface-2);
}

.btn-nav {
    background: var(--color-primary);
    color: #fff;
    padding: 8px 18px;
    font-size: 0.9rem;
}

.btn-full {
    width: 100%;
}

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 20, 25, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 84px;
}

.logo {
    display: flex;
    align-items: center;
    line-height: 1.2;
}

.logo-img {
    height: 68px;
    width: auto;
    max-width: 280px;
    object-fit: contain;
    background: #fff;
    border-radius: 6px;
    padding: 4px 8px;
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.logo-tag {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color 0.15s;
}

.nav a:hover {
    color: var(--color-text);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    overflow: hidden;
    padding: 110px 0 90px;
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
}

.hero-bg-logo {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    pointer-events: none;
    opacity: 0.22;
}

.hero-bg-logo img {
    width: min(78vw, 920px);
    height: auto;
    object-fit: contain;
    filter: contrast(1.05);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content {
    display: grid;
    gap: 48px;
}

.eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 560px;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 480px;
}

.stat {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ===== Cards & Grids ===== */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
    transition: border-color 0.2s;
}

.card:hover {
    border-color: var(--color-primary);
}

.card-icon {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
}

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

/* ===== Steps ===== */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
}

.step {
    text-align: center;
}

.step-num {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    font-size: 1.2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.step h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

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

/* ===== Benefits ===== */
.benefit {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
}

.benefit h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--color-primary);
}

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

/* ===== Applications ===== */
.app-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px;
}

.app-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.app-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ===== Contact ===== */
.contact-section {
    padding-bottom: 100px;
}

.contact-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 48px;
}

.contact-info h2 {
    font-size: 1.75rem;
    margin-bottom: 12px;
}

.contact-info > p {
    color: var(--color-text-muted);
    margin-bottom: 28px;
}

.contact-details p {
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.contact-details a {
    color: var(--color-primary);
    font-weight: 500;
}

.contact-details a:hover {
    text-decoration: underline;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.15s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-note {
    margin-top: 14px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-align: center;
}

.form-note a {
    color: var(--color-primary);
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
    background: var(--color-surface);
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.footer-brand .logo-text {
    display: block;
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-copy {
    text-align: right;
}

.footer-copy p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 84px;
        left: 0;
        right: 0;
        background: var(--color-surface);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--color-border);
    }

    .nav.open {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero {
        padding: 64px 0 48px;
    }

    .hero-bg-logo {
        opacity: 0.16;
        justify-content: center;
    }

    .logo-img {
        height: 54px;
        max-width: 200px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .section {
        padding: 64px 0;
    }

    .contact-box {
        grid-template-columns: 1fr;
        padding: 32px 24px;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 16px;
    }

    .footer-copy {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

.system-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.gallery-empty {
    color: var(--color-text-muted);
    text-align: center;
    grid-column: 1 / -1;
}

.gallery-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.gallery-item img,
.gallery-item video {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: #000;
}

.gallery-item p {
    padding: 12px 14px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.admin-wrap {
    max-width: 720px;
    margin: 40px auto 80px;
}

.admin-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 24px;
}

.admin-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.admin-row {
    display: flex;
    gap: 12px;
    align-items: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 10px;
}

.admin-row img,
.admin-row video {
    width: 88px;
    height: 64px;
    object-fit: cover;
    border-radius: 4px;
}

.admin-row .meta {
    flex: 1;
    font-size: 0.9rem;
}

.warn {
    color: #fbbf24;
    font-size: 0.85rem;
    margin-top: 10px;
}