/* ═══════════════════════════════════════
   SHARED STYLES FOR ALL SUBPAGES
   Matches index.html redesign
   ═══════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;600;700;800&family=Source+Serif+4:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
    --bg: #fafaf8;
    --bg-alt: #f0efec;
    --surface: #ffffff;
    --text: #1a1a1a;
    --text-muted: #6b6b6b;
    --accent: #2d5bf0;
    --accent-soft: rgba(45, 91, 240, 0.08);
    --navy: #0b1120;
    --card-border: rgba(0,0,0,0.06);
    --radius: 16px;
    --radius-sm: 10px;
    --font-display: 'Source Serif 4', Georgia, serif;
    --font-body: 'Sora', system-ui, sans-serif;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }

/* ── NAVIGATION ── */
.nav {
    position: sticky; top: 0; z-index: 1000;
    padding: 1.25rem 2rem;
    display: flex; justify-content: space-between; align-items: center;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--card-border);
}
.nav__logo {
    font-family: var(--font-display);
    font-size: 1.5rem; font-weight: 700; color: var(--navy); letter-spacing: -0.5px;
}
.nav__logo span { color: var(--accent); }

.nav__links {
    display: flex; list-style: none; gap: 2.5rem; align-items: center;
}
.nav__links a {
    font-size: 0.875rem; font-weight: 500; color: var(--text-muted);
    letter-spacing: 0.5px; transition: color 0.3s; position: relative;
}
.nav__links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--accent); transition: width 0.3s;
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { width: 100%; }

.nav__dropdown { position: relative; }
.nav__dropdown-menu {
    position: absolute; top: calc(100% + 12px); left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--surface); border: 1px solid var(--card-border);
    border-radius: var(--radius-sm); padding: 0.5rem; min-width: 180px;
    opacity: 0; visibility: hidden; transition: all 0.3s;
    box-shadow: var(--shadow-md); list-style: none;
}
.nav__dropdown:hover .nav__dropdown-menu {
    opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.nav__dropdown-menu a {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.65rem 1rem; border-radius: 8px; font-size: 0.85rem; transition: background 0.2s;
}
.nav__dropdown-menu a:hover { background: var(--accent-soft); color: var(--accent); }
.nav__dropdown-menu a::after { display: none; }
.nav__dropdown-menu i { font-size: 1.1rem; width: 20px; text-align: center; }

.nav__hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1001; }
.nav__hamburger span {
    display: block; width: 24px; height: 2px; background: var(--navy);
    transition: all 0.3s; border-radius: 2px;
}
.nav__hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__hamburger.active span:nth-child(2) { opacity: 0; }
.nav__hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── PAGE HERO BANNER ── */
.page-hero {
    background: var(--navy); color: #fff;
    padding: 4rem 2rem; text-align: center;
    position: relative; overflow: hidden;
}
.page-hero::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(45, 91, 240, 0.1) 0%, transparent 60%);
}
.page-hero__content { position: relative; z-index: 2; max-width: 700px; margin: 0 auto; }
.page-hero__icon {
    font-size: 2.5rem; margin-bottom: 1rem; color: var(--accent);
}
.page-hero__title {
    font-family: var(--font-display); font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700; letter-spacing: -1px; margin-bottom: 1rem;
}
.page-hero__desc {
    font-size: 1rem; color: rgba(255,255,255,0.5); line-height: 1.7; font-weight: 300;
}

/* ── CARDS GRID (for listing pages) ── */
.cards-section {
    padding: 4rem 2rem;
    max-width: 1200px; margin: 0 auto;
}
.cards-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem;
}
.card-item {
    background: var(--surface); border: 1px solid var(--card-border);
    border-radius: var(--radius); overflow: hidden;
    transition: all var(--transition); display: block;
}
.card-item:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent;
}
.card-item__image { height: 200px; overflow: hidden; position: relative; }
.card-item__image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.card-item:hover .card-item__image img { transform: scale(1.06); }
.card-item__body { padding: 1.5rem; }
.card-item__title {
    font-family: var(--font-display); font-size: 1.15rem; font-weight: 600;
    line-height: 1.35; margin-bottom: 0.5rem; color: var(--navy);
}
.card-item__desc { font-size: 0.875rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 1.25rem; }
.card-item__link {
    font-size: 0.825rem; font-weight: 600; color: var(--accent);
    display: inline-flex; align-items: center; gap: 0.4rem; transition: gap 0.3s;
}
.card-item:hover .card-item__link { gap: 0.7rem; }

/* ── SERVICES GRID ── */
.services-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem;
    padding: 4rem 2rem; max-width: 1200px; margin: 0 auto;
}
.service-card {
    background: var(--surface); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 2.5rem 2rem;
    transition: all var(--transition); display: block;
}
.service-card:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent;
}
.service-card__icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: var(--accent-soft); display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.5rem; font-size: 1.5rem; color: var(--accent);
}
.service-card__title {
    font-family: var(--font-display); font-size: 1.25rem; font-weight: 600;
    color: var(--navy); margin-bottom: 0.75rem;
}
.service-card__desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; margin-bottom: 1.25rem; }
.service-card__link {
    font-size: 0.825rem; font-weight: 600; color: var(--accent);
    display: inline-flex; align-items: center; gap: 0.4rem; transition: gap 0.3s;
}
.service-card:hover .service-card__link { gap: 0.7rem; }

/* ── ABOUT PAGE ── */
.about-section {
    padding: 4rem 2rem; max-width: 1100px; margin: 0 auto;
}
.about-block {
    display: flex; align-items: center; gap: 3rem; margin-bottom: 4rem;
}
.about-block.reverse { flex-direction: row-reverse; }
.about-block__photo {
    flex-shrink: 0; width: 320px; min-height: 380px;
    border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.about-block__photo img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }
.about-block__text h2 {
    font-family: var(--font-display); font-size: 1.8rem; font-weight: 700;
    color: var(--navy); margin-bottom: 1rem; letter-spacing: -0.5px;
}
.about-block__text p {
    font-size: 0.95rem; color: var(--text-muted); line-height: 1.75; margin-bottom: 1rem;
}

/* ── PROJECT DETAIL PAGE ── */
.project-detail {
    padding: 2rem; max-width: 1400px; margin: 0 auto;
}
.project-detail__layout {
    display: flex; flex-direction: column; gap: 2rem;
}
.project-detail__viewer {
    background: var(--surface); border: 1px solid var(--card-border);
    border-radius: var(--radius); overflow: hidden;
}
.project-detail__viewer iframe {
    display: block; width: 100%; height: 80vh; min-height: 600px; border: none;
}
.project-detail__info {
    background: var(--surface); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 2rem;
}
.project-detail__info h3 {
    font-family: var(--font-display); font-size: 1.2rem; font-weight: 600;
    color: var(--navy); margin-bottom: 1.25rem;
}
.project-detail__info p {
    font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 0.75rem;
}
.project-detail__info a {
    color: var(--accent); font-weight: 500; transition: color 0.3s;
}
.project-detail__info a:hover { color: #1d4ed8; }

.project-detail__nav {
    display: flex; justify-content: space-between; margin-top: 2rem;
    padding-top: 2rem; border-top: 1px solid var(--card-border);
}
.project-detail__nav a {
    font-size: 0.875rem; font-weight: 600; color: var(--accent);
    display: inline-flex; align-items: center; gap: 0.5rem;
    transition: gap 0.3s, color 0.3s;
}
.project-detail__nav a:hover { gap: 0.75rem; color: #1d4ed8; }

/* ── FOOTER ── */
.footer {
    background: var(--navy); color: rgba(255,255,255,0.4);
    text-align: center; padding: 2rem; font-size: 0.8rem; letter-spacing: 0.5px;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    .nav__links {
        position: fixed; top: 0; right: -100%; width: 75%; max-width: 320px;
        height: 100vh; background: var(--surface);
        flex-direction: column; justify-content: center; align-items: center; gap: 2rem;
        transition: right 0.4s ease; box-shadow: -10px 0 40px rgba(0,0,0,0.1);
    }
    .nav__links.open { right: 0; }
    .nav__links a { font-size: 1.1rem; color: var(--text); }
    .nav__dropdown-menu {
        position: static; transform: none; box-shadow: none; border: none;
        background: var(--bg-alt); opacity: 1; visibility: visible; margin-top: 0.5rem;
    }
    .nav__hamburger { display: flex; }

    .about-block, .about-block.reverse { flex-direction: column; text-align: center; }
    .about-block__photo { width: 250px; height: 310px; }

    .project-detail__layout { flex-direction: column; }
    .project-detail__viewer iframe { height: 60vh; min-height: 400px; }

    .cards-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
}

.nav__overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.3); z-index: 999; }
.nav__overlay.active { display: block; }