/* ==============================
   HASSEL ÇELİK - UNIFIED STYLESHEET
   3 TEMA: Kırmızı (default) | Mavi | Dark Night
   ============================== */

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

/* --- KIRMIZI TEMA (DEFAULT) --- */
:root, [data-theme="red"] {
    --primary: #1a1a2e;
    --accent: #e63946;
    --accent-dark: #c1121f;
    --accent-glow: rgba(230,57,70,0.35);
    --gold: #d4a843;
    --dark: #0f0f1a;
    --dark2: #16162a;
    --light: #f8f9fa;
    --gray: #6c757d;
    --gray-light: #e9ecef;
    --white: #ffffff;
    --body-bg: #ffffff;
    --body-color: #333333;
    --shadow: 0 4px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --radius: 12px;
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* --- MAVİ TEMA --- */
[data-theme="blue"] {
    --primary: #0b1a2e;
    --accent: #00bcd4;
    --accent-dark: #0097a7;
    --accent-glow: rgba(0,188,212,0.25);
    --gold: #d4a843;
    --dark: #06111f;
    --dark2: #0d2137;
    --light: #f0f7fa;
    --gray: #6c757d;
    --gray-light: #dde9ed;
    --white: #ffffff;
    --body-bg: #ffffff;
    --body-color: #333333;
    --shadow: 0 4px 30px rgba(0,188,212,0.06);
    --shadow-lg: 0 10px 40px rgba(0,188,212,0.1);
}

/* --- DARK NIGHT TEMA --- */
[data-theme="dark"] {
    --primary: #81d4fa;
    --accent: #4dd0e1;
    --accent-dark: #26c6da;
    --accent-glow: rgba(77,208,225,0.3);
    --gold: #80deea;
    --dark: #0a0a0a;
    --dark2: #141414;
    --light: #1a1a1a;
    --gray: #aaaaaa;
    --gray-light: #2a2a2a;
    --white: #1e1e1e;
    --body-bg: #111111;
    --body-color: #e0e0e0;
    --shadow: 0 4px 30px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
    font-family: 'Inter', sans-serif;
    color: var(--body-color);
    background: var(--body-bg);
    overflow-x: hidden;
    line-height: 1.7;
    transition: background 0.5s ease, color 0.5s ease;
}

h1, h2, h3, h4, h5 { font-family: 'Space Grotesk', sans-serif; font-weight: 700; line-height: 1.2; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.accent { color: var(--accent); }

/* --- BUTTONS --- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 50px; font-weight: 600; font-size: 0.95rem;
    text-decoration: none; transition: var(--transition); cursor: pointer; border: none;
    font-family: 'Space Grotesk', sans-serif; letter-spacing: 0.3px;
}
.btn-primary { background: var(--accent); color: var(--white); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 25px var(--accent-glow); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.6); }
.btn-outline:hover { background: var(--white); color: var(--primary); border-color: var(--white); }
.btn-sm { padding: 8px 18px; font-size: 0.82rem; background: var(--accent); color: var(--white); border-radius: 8px; }
.btn-sm:hover { background: var(--accent-dark); }
.btn-full { width: 100%; justify-content: center; }

/* --- SECTION HEADER --- */
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
    display: inline-block; padding: 6px 18px; border-radius: 50px;
    background: rgba(0,0,0,0.04); color: var(--accent);
    font-size: 0.82rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 2px; margin-bottom: 16px;
}
[data-theme="dark"] .section-tag { background: rgba(255,255,255,0.06); }
.section-header h2 { font-size: clamp(2rem, 4vw, 2.8rem); color: var(--primary); }

/* --- NAVBAR --- */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 12px 0; transition: var(--transition);
    background: var(--white); box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}
[data-theme="dark"] .navbar { background: #1a1a1a; box-shadow: 0 2px 20px rgba(0,0,0,0.3); }
.navbar.scrolled { padding: 8px 0; box-shadow: 0 2px 30px rgba(0,0,0,0.1); }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo img { height: 56px; transition: filter 0.5s ease; }
[data-theme="dark"] .nav-logo img { filter: brightness(0) invert(1); }
.nav-menu { display: flex; list-style: none; gap: 8px; }
.nav-link {
    color: var(--primary); text-decoration: none; font-size: 0.9rem;
    font-weight: 500; padding: 8px 16px; border-radius: 8px; transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--accent); background: rgba(0,0,0,0.04); }
[data-theme="dark"] .nav-link:hover, [data-theme="dark"] .nav-link.active { background: rgba(255,255,255,0.06); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--primary); border-radius: 2px; transition: var(--transition); }

/* --- HERO --- */
.hero {
    position: relative; height: 100vh; min-height: 600px;
    display: flex; align-items: center; justify-content: center; overflow: hidden;
    margin-top: 80px;
}
.hero-slider { position: absolute; inset: 0; }
.hero-slide {
    position: absolute; inset: 0; background-size: cover; background-position: center;
    opacity: 0; transition: opacity 1.2s ease;
}
.hero-slide.active { opacity: 1; }
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(15,15,26,0.85) 0%, rgba(26,26,46,0.7) 50%, rgba(15,15,26,0.8) 100%);
}
[data-theme="dark"] .hero-overlay {
    background: linear-gradient(135deg, rgba(0,0,0,0.9) 0%, rgba(10,10,10,0.75) 50%, rgba(0,0,0,0.85) 100%);
}
.hero-content {
    position: relative; z-index: 2; text-align: center;
    max-width: 800px; padding: 0 20px;
    animation: fadeInUp 1s ease 0.3s both;
}
.hero-badge {
    display: inline-block; padding: 8px 24px; border-radius: 50px;
    background: rgba(0,0,0,0.12); border: 1px solid rgba(255,255,255,0.2);
    color: var(--accent); font-size: 0.85rem; font-weight: 600;
    margin-bottom: 24px; letter-spacing: 0.5px;
}
.hero h1 { font-size: clamp(2.5rem, 6vw, 4rem); color: var(--white); margin-bottom: 20px; }
.hero p { color: rgba(255,255,255,0.8); font-size: 1.15rem; margin-bottom: 36px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-scroll { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 2; }
.hero-scroll a { color: rgba(255,255,255,0.5); font-size: 1.3rem; animation: bounce 2s infinite; }
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- STATS --- */
.stats {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
    padding: 70px 0; position: relative;
}
.stats::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--gold), var(--accent));
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.stat-item { padding: 20px; }
.stat-icon { font-size: 2rem; color: var(--accent); margin-bottom: 12px; }
.stat-number {
    font-family: 'Space Grotesk', sans-serif; font-size: 3.2rem; font-weight: 700;
    color: var(--white); display: inline;
}
.stat-suffix {
    font-family: 'Space Grotesk', sans-serif; font-size: 2rem; font-weight: 700;
    color: var(--accent); display: inline;
}
.stat-label { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin-top: 4px; font-weight: 500; }

/* --- ABOUT --- */
.about { padding: 100px 0; background: var(--body-bg); transition: background 0.5s ease; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-content .lead { font-size: 1.15rem; color: var(--primary); font-weight: 500; margin-bottom: 16px; line-height: 1.8; }
.about-content > p { color: var(--gray); margin-bottom: 32px; }
.about-motto { display: flex; flex-direction: column; gap: 20px; }
.motto-item {
    display: flex; gap: 16px; align-items: flex-start;
    padding: 16px; border-radius: var(--radius); transition: var(--transition);
}
.motto-item:hover { background: rgba(0,0,0,0.02); }
[data-theme="dark"] .motto-item:hover { background: rgba(255,255,255,0.04); }
.motto-item i {
    width: 48px; height: 48px; border-radius: 12px;
    background: rgba(0,0,0,0.04); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; flex-shrink: 0;
}
[data-theme="dark"] .motto-item i { background: rgba(255,255,255,0.06); }
.motto-item h4 { font-size: 1rem; margin-bottom: 2px; color: var(--primary); }
.motto-item p { font-size: 0.88rem; color: var(--gray); margin: 0; }
.about-image { position: relative; }
.about-image img {
    width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg);
    aspect-ratio: 4/3; object-fit: cover;
}
.experience-badge {
    position: absolute; bottom: -20px; right: -20px;
    background: var(--accent); color: var(--white);
    padding: 24px 28px; border-radius: var(--radius);
    box-shadow: 0 8px 30px var(--accent-glow); text-align: center;
}
.exp-number { font-family: 'Space Grotesk', sans-serif; font-size: 2.5rem; font-weight: 700; display: block; line-height: 1; }
.exp-text { font-size: 0.85rem; font-weight: 500; opacity: 0.9; }

/* --- SERVICES --- */
.services { padding: 100px 0; background: var(--light); transition: background 0.5s ease; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card {
    background: var(--white); padding: 36px 32px; border-radius: var(--radius);
    transition: var(--transition); border: 1px solid var(--gray-light);
    position: relative; overflow: hidden;
}
.service-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--accent); transform: scaleX(0); transition: var(--transition);
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: rgba(0,0,0,0.03); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; margin-bottom: 20px;
}
[data-theme="dark"] .service-icon { background: rgba(255,255,255,0.06); }
.service-card h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--primary); }
.service-card p { color: var(--gray); font-size: 0.92rem; line-height: 1.7; }

/* --- REFERENCES --- */
.references { padding: 100px 0; background: var(--body-bg); transition: background 0.5s ease; }
.ref-filters { display: flex; justify-content: center; gap: 10px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn {
    padding: 10px 22px; border: 2px solid var(--gray-light); border-radius: 50px;
    background: transparent; color: var(--gray); font-weight: 600; font-size: 0.88rem;
    cursor: pointer; transition: var(--transition); font-family: 'Space Grotesk', sans-serif;
}
.filter-btn:hover, .filter-btn.active { border-color: var(--accent); background: var(--accent); color: var(--white); }
.ref-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.ref-card {
    border-radius: var(--radius); overflow: hidden;
    background: var(--white); box-shadow: var(--shadow);
    transition: var(--transition); border: 1px solid var(--gray-light);
}
.ref-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.ref-card.hidden { display: none; }
.ref-image { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.ref-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.ref-card:hover .ref-image img { transform: scale(1.08); }
.ref-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.75), transparent 60%);
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 16px; opacity: 0; transition: var(--transition);
}
.ref-card:hover .ref-overlay { opacity: 1; }
.ref-year { color: var(--white); font-size: 0.82rem; font-weight: 600; letter-spacing: 1px; }
.ref-zoom {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 48px; height: 48px; border-radius: 50%; border: 2px solid var(--white);
    background: rgba(0,0,0,0.5); color: var(--white); font-size: 1rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: var(--transition); opacity: 0;
}
.ref-card:hover .ref-zoom { opacity: 1; }
.ref-zoom:hover { background: var(--accent); transform: translate(-50%, -50%) scale(1.1); }
.ref-info { padding: 18px 16px; }
.ref-info h3 { font-size: 1rem; color: var(--primary); margin-bottom: 4px; }
.ref-info p { font-size: 0.84rem; color: var(--gray); margin-bottom: 8px; }
.ref-tag {
    display: inline-block; padding: 3px 12px; border-radius: 50px;
    background: rgba(0,0,0,0.04); color: var(--accent);
    font-size: 0.75rem; font-weight: 600;
}
[data-theme="dark"] .ref-tag { background: rgba(255,255,255,0.08); }

/* --- CERT WORK --- */
.cert-work { padding: 100px 0; background: var(--light); transition: background 0.5s ease; }
.cert-work-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.cert-work-item {
    border-radius: var(--radius); overflow: hidden;
    background: var(--white); box-shadow: var(--shadow);
    cursor: pointer; transition: var(--transition); border: 1px solid var(--gray-light);
}
.cert-work-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.cert-work-item img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }

/* --- QUALITY --- */
.quality { padding: 100px 0; background: var(--body-bg); transition: background 0.5s ease; }
.quality-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.quality-card {
    text-align: center; padding: 40px 28px;
    border-radius: var(--radius); border: 1px solid var(--gray-light);
    transition: var(--transition); background: var(--white);
}
.quality-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: transparent; }
.quality-img {
    width: 200px; height: 260px; margin: 0 auto 24px;
    border-radius: 8px; overflow: hidden; border: 2px solid var(--gray-light);
    transition: var(--transition); background: var(--light);
    display: flex; align-items: center; justify-content: center;
}
.quality-card:hover .quality-img { border-color: var(--accent); box-shadow: 0 4px 20px var(--accent-glow); }
.quality-img img { width: 100%; height: 100%; object-fit: contain; }
.quality-card h4 { font-size: 1.2rem; color: var(--primary); margin-bottom: 6px; }
.quality-card p { font-size: 0.9rem; color: var(--gray); margin-bottom: 20px; }

/* --- CONTACT --- */
.contact { padding: 100px 0; background: var(--light); transition: background 0.5s ease; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 28px; }
.contact-icon {
    width: 52px; height: 52px; border-radius: 14px;
    background: rgba(0,0,0,0.04); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; flex-shrink: 0;
}
[data-theme="dark"] .contact-icon { background: rgba(255,255,255,0.06); }
.contact-item h4 { font-size: 0.95rem; color: var(--primary); margin-bottom: 2px; }
.contact-item p { font-size: 0.9rem; color: var(--gray); line-height: 1.6; }
.contact-form { background: var(--white); padding: 36px; border-radius: var(--radius); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.contact-form input, .contact-form textarea {
    width: 100%; padding: 14px 18px; border: 2px solid var(--gray-light);
    border-radius: 10px; font-size: 0.92rem; font-family: 'Inter', sans-serif;
    transition: var(--transition); background: var(--light);
    color: var(--body-color);
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none; border-color: var(--accent); background: var(--white);
    box-shadow: 0 0 0 4px var(--accent-glow);
}
.contact-form textarea { resize: vertical; margin-bottom: 16px; }

/* --- FOOTER --- */
.footer {
    background: var(--dark); color: rgba(255,255,255,0.7);
    padding: 60px 0 0; transition: background 0.5s ease;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-bottom: 16px; }
.footer-logo img { height: 52px; transition: filter 0.5s ease; }
[data-theme="dark"] .footer-logo img { filter: brightness(0) invert(1); }
.footer-logo span { font-family: 'Space Grotesk', sans-serif; font-size: 1.2rem; font-weight: 700; color: var(--white); }
.footer-col p { font-size: 0.9rem; line-height: 1.7; }
.footer-col h4 { color: var(--white); font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.88rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.85rem; }
.footer-contact li i { color: var(--accent); margin-top: 3px; flex-shrink: 0; }
.footer-bottom {
    margin-top: 40px; padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center; font-size: 0.85rem;
}

/* --- GALLERY MODAL --- */
.gallery-modal {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.95); display: none;
    align-items: center; justify-content: center; flex-direction: column;
}
.gallery-modal.active { display: flex; }
.modal-close {
    position: absolute; top: 20px; right: 24px; font-size: 2rem;
    color: var(--white); background: none; border: none; cursor: pointer;
    z-index: 10; transition: var(--transition);
}
.modal-close:hover { color: var(--accent); }
.modal-prev, .modal-next {
    position: absolute; top: 50%; transform: translateY(-50%);
    font-size: 1.5rem; color: var(--white); background: rgba(255,255,255,0.1);
    border: none; width: 50px; height: 50px; border-radius: 50%;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: var(--transition); z-index: 10;
}
.modal-prev { left: 20px; }
.modal-next { right: 20px; }
.modal-prev:hover, .modal-next:hover { background: var(--accent); }
.modal-content { max-width: 85vw; max-height: 80vh; }
.modal-content img { max-width: 100%; max-height: 80vh; object-fit: contain; border-radius: 8px; }
.modal-caption { color: var(--white); margin-top: 16px; font-size: 0.95rem; text-align: center; }

/* --- ANIMATIONS --- */
.reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* --- THEME SWITCHER --- */
.theme-switcher {
    display: flex; align-items: center; gap: 8px;
}
.theme-btn {
    width: 24px; height: 24px; border-radius: 50%; border: 2px solid transparent;
    cursor: pointer; transition: var(--transition); padding: 0; position: relative;
}
.theme-btn[data-theme="red"] { background: #e63946; }
.theme-btn[data-theme="blue"] { background: #00bcd4; }
.theme-btn[data-theme="dark"] { background: #1a1a1a; border-color: #555; }
.theme-btn:hover { transform: scale(1.2); }
.theme-btn.active { box-shadow: 0 0 0 3px var(--white), 0 0 0 5px var(--accent); }
.theme-btn .theme-tooltip {
    position: absolute; bottom: -32px; left: 50%; transform: translateX(-50%);
    background: var(--dark); color: var(--white); padding: 4px 10px;
    border-radius: 4px; font-size: 0.7rem; font-weight: 600;
    white-space: nowrap; opacity: 0; pointer-events: none;
    transition: var(--transition); z-index: 10;
}
.theme-btn:hover .theme-tooltip { opacity: 1; bottom: -36px; }

/* --- WHATSAPP FLOAT --- */
.whatsapp-float {
    position: fixed; bottom: 30px; left: 30px; z-index: 999;
    width: 60px; height: 60px; border-radius: 50%;
    background: #25d366; color: var(--white);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    transition: var(--transition); text-decoration: none;
}
.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37,211,102,0.6);
    color: var(--white);
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
    .ref-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-menu {
        position: fixed; top: 0; right: -100%; width: 75%; height: 100vh;
        background: var(--white); flex-direction: column; padding: 80px 30px 30px;
        transition: right 0.4s ease; gap: 4px; box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    }
    [data-theme="dark"] .nav-menu { background: #1a1a1a; }
    .nav-menu.open { right: 0; }
    .nav-toggle { display: flex; }
    .nav-toggle.active span { background: var(--primary); }
    .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-image { order: -1; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .ref-grid { grid-template-columns: repeat(2, 1fr); }
    .quality-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .hero h1 { font-size: 2.2rem; }
    .nav-logo img { height: 42px; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .ref-grid { grid-template-columns: 1fr; }
    .ref-filters { gap: 6px; }
    .filter-btn { padding: 8px 14px; font-size: 0.8rem; }
    .stat-number { font-size: 2.4rem; }
    .experience-badge { bottom: -10px; right: 10px; padding: 16px 20px; }
    .exp-number { font-size: 2rem; }
    .theme-switcher { display: none; }
}