/* ============================================================
   TNC MÜHENDİSLİK — Ana Stil Dosyası
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

html { scroll-behavior: smooth; font-size: var(--font-size); }

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: var(--line-height);
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ─── YARDIMCI ─────────────────────────────────────────────── */
.container { max-width: 1400px; margin: 0 auto; padding: 0 1.5rem; }
.section    { padding: 80px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-header { text-align: center; margin-bottom: 56px; }
.section-header .badge {
    display: inline-block;
    background: rgba(201,168,76,.15);
    color: var(--color-accent);
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: .35rem 1rem;
    border-radius: 20px;
    margin-bottom: .8rem;
}
.section-header h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.25;
}
.section-header p {
    margin-top: .75rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin-inline: auto;
}
.divider {
    width: 60px; height: 4px;
    background: var(--color-accent);
    border-radius: 2px;
    margin: 1rem auto 0;
}

/* ─── BUTONLAR ─────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .75rem 1.75rem;
    border-radius: var(--radius);
    font-weight: 600; font-size: .95rem;
    cursor: pointer; border: 2px solid transparent;
    transition: all var(--transition);
    white-space: nowrap;
}
.btn-primary {
    background: var(--color-accent);
    color: var(--color-primary-dark);
    border-color: var(--color-accent);
}
.btn-primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-outline {
    background: transparent;
    color: var(--color-text-light);
    border-color: rgba(255,255,255,.6);
}
.btn-outline:hover {
    background: rgba(255,255,255,.15);
    border-color: #fff;
}
.btn-outline-dark {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-outline-dark:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ─── NAVBAR ────────────────────────────────────────────────── */
#navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: transparent;
    transition: background var(--transition), box-shadow var(--transition);
    padding: 1rem 0;
}
#navbar.scrolled {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
    padding: .6rem 0;
}
.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
    display: flex; align-items: center; gap: .75rem;
    color: #fff; font-weight: 700; font-size: 1.2rem;
}
.nav-logo img { height: 60px; width: auto; }
.nav-logo span { line-height: 1.2; }
.nav-logo small { display: block; font-size: .7rem; font-weight: 400; opacity: .8; }

.nav-links {
    display: flex; align-items: center; gap: .25rem;
}
.nav-links a {
    color: rgba(255,255,255,.85);
    padding: .5rem .9rem;
    border-radius: var(--radius);
    font-size: .92rem;
    font-weight: 500;
    transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: #fff; background: rgba(255,255,255,.12); }

.nav-cta {
    background: var(--color-accent);
    color: var(--color-primary-dark) !important;
    padding: .5rem 1.2rem !important;
}
.nav-cta:hover { background: var(--color-accent-dark) !important; color: #fff !important; }

.hamburger {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: .5rem;
}
.hamburger span {
    display: block; width: 24px; height: 2px;
    background: #fff; border-radius: 2px;
    transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── HERO ──────────────────────────────────────────────────── */
#hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center;
    background: var(--color-primary-dark);
    overflow: hidden;
}
#hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding-top: 5rem;
    padding-bottom: 3rem;
    width: 100%;
}
.hero-visual {
    display: flex; align-items: center; justify-content: center;
}
.hero-visual img {
    max-height: 480px; width: 100%;
    object-fit: contain;
    filter: drop-shadow(0 8px 40px rgba(77,168,224,.35));
    animation: hero-float 7s ease-in-out infinite;
}
@keyframes hero-float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-18px); }
}
@media (max-width: 900px) {
    #hero .container { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
}
.hero-bg {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, #0c1628 0%, #1a3a6e 55%, #0f2a52 100%);
}
.hero-bg.has-photo {
    background: none;
}
.hero-bg.has-photo img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: .22;
}
/* Animasyonlu boru ağı arka plan */
.hero-bg::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(45,122,181,.55) 0.5px, transparent 0.5px),
        linear-gradient(90deg, rgba(45,122,181,.55) 0.5px, transparent 0.5px);
    background-size: 90px 90px;
    animation: grid-move 28s linear infinite;
}
.hero-bg::after {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 15% 85%, rgba(45,122,181,.25) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 10%, rgba(77,168,224,.15) 0%, transparent 45%),
        radial-gradient(ellipse at 50% 50%, rgba(26,58,110,.6) 0%, transparent 70%);
}
@keyframes grid-move {
    0%   { background-position: 0 0; }
    100% { background-position: 90px 90px; }
}
/* Yüzen geometrik şekiller */
.hero-pattern {
    position: absolute; inset: 0; pointer-events: none; overflow: hidden;
}
.hero-pattern::before,
.hero-pattern::after {
    content: '';
    position: absolute;
    border: 1.5px solid rgba(77,168,224,.15);
    border-radius: 6px;
    animation: float-shape 12s ease-in-out infinite;
}
.hero-pattern::before {
    width: 280px; height: 280px;
    top: 10%; right: 8%;
    transform: rotate(15deg);
    animation-duration: 14s;
}
.hero-pattern::after {
    width: 160px; height: 160px;
    bottom: 15%; right: 22%;
    transform: rotate(45deg);
    animation-duration: 10s;
    animation-delay: -4s;
    border-color: rgba(77,168,224,.1);
}
@keyframes float-shape {
    0%, 100% { transform: rotate(15deg) translateY(0px); }
    50%       { transform: rotate(20deg) translateY(-20px); }
}
.hero-content {
    position: relative; z-index: 1;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: .5rem;
    background: rgba(77,168,224,.15); color: #7ec8f0;
    border: 1px solid rgba(77,168,224,.3);
    padding: .4rem 1rem; border-radius: 20px;
    font-size: .82rem; font-weight: 600;
    letter-spacing: .08em; text-transform: uppercase;
    margin-bottom: 1.5rem;
}
.hero-content h1 {
    font-size: clamp(2rem, 5vw, 3.6rem);
    font-weight: 800; color: #fff;
    line-height: 1.15; margin-bottom: 1.25rem;
}
.hero-content h1 em {
    font-style: normal; color: var(--color-accent);
}
.hero-content p {
    font-size: 1.1rem; color: rgba(255,255,255,.75);
    max-width: 560px; margin-bottom: 2rem;
}
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats {
    display: flex; gap: 2.5rem; flex-wrap: wrap;
    margin-top: 3.5rem; padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stat strong {
    display: block;
    font-size: 2rem; font-weight: 800; color: #7ec8f0;
}
.hero-stat span { font-size: .85rem; color: rgba(255,255,255,.6); }

/* Sağ taraf yüzen hizmet ikonları */
.hero-deco {
    position: absolute; inset: 0; pointer-events: none; overflow: hidden;
}
.hero-deco-icon {
    position: absolute;
    width: 68px; height: 68px;
    background: rgba(45,122,181,.22);
    border: 1.5px solid rgba(77,168,224,.55);
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    color: rgba(160,215,255,.9); font-size: 1.7rem;
    backdrop-filter: blur(4px);
    box-shadow: 0 0 18px rgba(77,168,224,.25), inset 0 1px 0 rgba(255,255,255,.1);
    animation: icon-float 6s ease-in-out infinite;
}
@keyframes icon-float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: .75; }
    50%       { transform: translateY(-14px) rotate(4deg); opacity: 1; }
}
@media (max-width: 992px) { .hero-deco { display: none; } }

/* ─── HAKKIMIZDA (özet) ─────────────────────────────────────── */
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
.about-img-wrap { position: relative; }
.about-img-wrap img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%; object-fit: cover;
}
.about-badge-float {
    position: absolute; bottom: -20px; right: -20px;
    background: var(--color-accent); color: var(--color-primary-dark);
    padding: 1.25rem 1.5rem; border-radius: var(--radius);
    font-weight: 700; text-align: center; box-shadow: var(--shadow-md);
}
.about-badge-float strong { display: block; font-size: 2rem; line-height: 1; }
.about-badge-float span { font-size: .8rem; }
.about-text h2 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700; color: var(--color-primary);
    margin-bottom: 1rem;
}
.about-text p { color: var(--color-text-muted); margin-bottom: 1rem; }
.about-list { margin: 1.25rem 0; }
.about-list li {
    display: flex; align-items: flex-start; gap: .75rem;
    padding: .4rem 0; color: var(--color-text);
}
.about-list li i { color: var(--color-accent); margin-top: .2rem; flex-shrink: 0; }

/* ─── HİZMETLER ─────────────────────────────────────────────── */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}
.service-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition);
    cursor: pointer;
}
.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.service-icon {
    width: 64px; height: 64px;
    background: rgba(26,45,90,.08);
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; color: var(--color-primary);
    margin-bottom: 1.25rem;
    transition: all var(--transition);
}
.service-card:hover .service-icon {
    background: var(--color-primary);
    color: var(--color-accent);
}
.service-card h3 {
    font-size: 1.1rem; font-weight: 600;
    color: var(--color-primary); margin-bottom: .5rem;
}
.service-card p { font-size: .9rem; color: var(--color-text-muted); }
.service-link {
    display: inline-flex; align-items: center; gap: .4rem;
    margin-top: 1rem; font-size: .88rem; font-weight: 600;
    color: var(--color-accent);
}
.service-link i { transition: transform var(--transition); }
.service-card:hover .service-link i { transform: translateX(4px); }

/* ─── PROJELER ──────────────────────────────────────────────── */
.filter-bar {
    display: flex; flex-wrap: wrap; gap: .5rem;
    justify-content: center; margin-bottom: 2.5rem;
}
.filter-btn {
    padding: .45rem 1.2rem;
    border: 2px solid var(--color-border);
    border-radius: 20px; background: transparent;
    font-size: .88rem; font-weight: 500;
    cursor: pointer; transition: all var(--transition);
    color: var(--color-text-muted);
}
.filter-btn:hover, .filter-btn.active {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #fff;
}
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}
.project-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}
.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.project-img {
    position: relative; height: 220px; overflow: hidden;
    background: var(--color-bg-alt);
}
.project-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .5s ease;
}
.project-card:hover .project-img img { transform: scale(1.07); }
.project-img-placeholder {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    flex-direction: column; gap: .5rem;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: rgba(255,255,255,.25); font-size: 2.5rem;
    position: relative; overflow: hidden;
}
.project-img-placeholder::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
    background-size: 24px 24px;
}
.project-img-placeholder span {
    font-size: .75rem; font-weight: 600;
    color: rgba(255,255,255,.35);
    letter-spacing: .08em; text-transform: uppercase;
    position: relative; z-index: 1;
}
.project-img-placeholder i { position: relative; z-index: 1; }
.project-tag {
    position: absolute; top: 1rem; left: 1rem;
    background: var(--color-accent); color: var(--color-primary-dark);
    font-size: .75rem; font-weight: 700; padding: .25rem .75rem;
    border-radius: 20px;
}
.project-body { padding: 1.25rem; }
.project-body h3 {
    font-size: 1rem; font-weight: 600;
    color: var(--color-primary); margin-bottom: .4rem;
    line-height: 1.4;
}
.project-body .isveren {
    font-size: .83rem; color: var(--color-text-muted);
    display: flex; align-items: center; gap: .3rem;
}

/* ─── REFERANSLAR ───────────────────────────────────────────── */
#referanslar { background: var(--color-primary-dark); padding: 60px 0; }
#referanslar .section-header .badge { background: rgba(201,168,76,.15); color: var(--color-accent); }
#referanslar .section-header h2 { color: #fff; }
.ref-track {
    display: flex; gap: 2rem; align-items: center;
    flex-wrap: wrap; justify-content: center;
}
.ref-item {
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius);
    padding: 1rem 1.75rem;
    color: rgba(255,255,255,.75);
    font-size: .88rem; font-weight: 500;
    text-align: center;
    transition: all var(--transition);
    min-width: 160px;
}
.ref-item:hover {
    background: rgba(255,255,255,.14);
    color: #fff;
    border-color: var(--color-accent);
}
.ref-item img { max-height: 40px; width: auto; filter: brightness(0) invert(1); opacity: .7; margin: 0 auto .5rem; }
.ref-item:hover img { opacity: 1; }

/* ─── CTA BANDI ─────────────────────────────────────────────── */
#cta-band {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    padding: 72px 0;
}
.cta-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 2rem; flex-wrap: wrap;
}
.cta-inner h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700; color: #fff;
}
.cta-inner p { color: rgba(255,255,255,.75); margin-top: .5rem; }

/* ─── İLETİŞİM ──────────────────────────────────────────────── */
.contact-grid {
    display: grid; grid-template-columns: 1fr 1.4fr; gap: 3rem; align-items: start;
}
.contact-info h3 { font-size: 1.3rem; font-weight: 700; color: var(--color-primary); margin-bottom: 1.5rem; }
.contact-item {
    display: flex; gap: 1rem; align-items: flex-start;
    margin-bottom: 1.25rem;
}
.contact-item-icon {
    width: 44px; height: 44px; flex-shrink: 0;
    background: rgba(26,45,90,.08);
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    color: var(--color-primary); font-size: 1.1rem;
}
.contact-item-text strong { display: block; font-size: .82rem; color: var(--color-text-muted); }
.contact-item-text span { font-size: .95rem; }

.contact-form { background: var(--color-bg-alt); padding: 2rem; border-radius: var(--radius-lg); }
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: .4rem; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%; padding: .75rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    font-size: .95rem; font-family: inherit;
    transition: border-color var(--transition);
    background: var(--color-bg);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26,45,90,.1);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-msg { padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: .9rem; }
.form-msg.success { background: #d1e7dd; color: #0a3622; }
.form-msg.error   { background: #f8d7da; color: #58151c; }

/* ─── FOOTER ────────────────────────────────────────────────── */
#footer {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,.7);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .nav-logo { margin-bottom: 1rem; }
.footer-brand p { font-size: .9rem; line-height: 1.7; max-width: 300px; }
.footer-col h4 {
    color: #fff; font-size: .95rem; font-weight: 600;
    margin-bottom: 1rem; padding-bottom: .5rem;
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}
.footer-col ul li { margin-bottom: .5rem; }
.footer-col ul a { font-size: .88rem; transition: color var(--transition); }
.footer-col ul a:hover { color: var(--color-accent); }
.footer-bottom {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.25rem 0; flex-wrap: wrap; gap: 1rem;
    font-size: .83rem;
}
.social-links { display: flex; gap: .75rem; }
.social-links a {
    width: 36px; height: 36px;
    background: rgba(255,255,255,.08);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,.7); font-size: .9rem;
    transition: all var(--transition);
}
.social-links a:hover { background: var(--color-accent); color: var(--color-primary-dark); }

/* ─── SAYFA BAŞLIĞI (iç sayfalar) ──────────────────────────── */
.page-hero {
    position: relative;
    padding: 130px 0 64px;
    color: #fff;
    overflow: hidden;
    background: linear-gradient(135deg, #0c1628 0%, #1a3a6e 55%, #0f2a52 100%);
}
/* Aynı boru ağı animasyonu */
.page-hero::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(45,122,181,.55) 0.5px, transparent 0.5px),
        linear-gradient(90deg, rgba(45,122,181,.55) 0.5px, transparent 0.5px);
    background-size: 90px 90px;
    animation: grid-move 28s linear infinite;
    pointer-events: none;
}
/* Arka plan fotoğrafı (isteğe bağlı) */
.page-hero-bg {
    position: absolute; inset: 0; z-index: 0;
}
.page-hero-bg img {
    width: 100%; height: 100%;
    object-fit: cover; opacity: .15;
}
.page-hero-overlay {
    position: absolute; inset: 0; z-index: 1;
    background:
        radial-gradient(ellipse at 10% 90%, rgba(45,122,181,.3) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 10%, rgba(77,168,224,.15) 0%, transparent 45%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; }
.page-hero p { color: rgba(255,255,255,.75); margin-top: .5rem; }
.breadcrumb { display: flex; gap: .5rem; align-items: center; margin-top: .75rem; font-size: .85rem; color: rgba(255,255,255,.55); }
.breadcrumb a { color: rgba(255,255,255,.55); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { color: #7ec8f0; }

/* ─── SAYAÇ ─────────────────────────────────────────────────── */
.stats-band { background: var(--color-primary); padding: 56px 0; }
.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center;
}
.stat-item strong {
    display: block; font-size: 2.5rem; font-weight: 800; color: var(--color-accent);
}
.stat-item span { font-size: .88rem; color: rgba(255,255,255,.7); }

/* ─── GALERI ────────────────────────────────────────────────── */
.gallery-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem;
}
.gallery-item {
    border-radius: var(--radius); overflow: hidden;
    aspect-ratio: 4/3; cursor: pointer;
    position: relative;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.gallery-item:hover img { transform: scale(1.08); }
.gallery-overlay {
    position: absolute; inset: 0;
    background: rgba(15,27,61,.5);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity var(--transition);
    color: #fff; font-size: 1.5rem;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }

/* ─── SERTİFİKALAR ──────────────────────────────────────────── */
.cert-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1.5rem;
}
.cert-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center; background: var(--color-bg);
    transition: all var(--transition);
}
.cert-card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); }
.cert-card img { max-height: 140px; margin: 0 auto 1rem; object-fit: contain; }
.cert-card h4 { font-size: .95rem; color: var(--color-primary); }

/* ─── KATALOG ───────────────────────────────────────────────── */
.catalog-card {
    display: flex; gap: 2.5rem; align-items: flex-start;
    padding: 2.5rem; border-radius: var(--radius-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    max-width: 700px; margin: 0 auto;
}
.catalog-icon {
    width: 90px; height: 90px; flex-shrink: 0;
    background: linear-gradient(135deg, #dc354540, #dc354515);
    border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; color: #dc3545;
}
.catalog-info h2 { font-size: 1.4rem; margin-bottom: .5rem; }
.catalog-info p  { color: var(--color-text-muted); line-height: 1.6; }
@media (max-width: 600px) {
    .catalog-card { flex-direction: column; align-items: center; text-align: center; }
}

/* ─── ALERT / BILDIRIM ──────────────────────────────────────── */
.alert {
    padding: .9rem 1.25rem; border-radius: var(--radius);
    margin-bottom: 1rem; font-size: .9rem;
}
.alert-success { background: #d1e7dd; color: #0a3622; border: 1px solid #a3cfbb; }
.alert-danger   { background: #f8d7da; color: #58151c; border: 1px solid #f1aeb5; }
.alert-info     { background: #cff4fc; color: #055160; border: 1px solid #9eeaf9; }

/* ─── MOBİL ─────────────────────────────────────────────────── */
@media (max-width: 992px) {
    .about-grid    { grid-template-columns: 1fr; }
    .about-img-wrap { display: none; }
    .contact-grid  { grid-template-columns: 1fr; }
    .footer-grid   { grid-template-columns: 1fr 1fr; }
    .stats-grid    { grid-template-columns: repeat(2, 1fr); }
    .cta-inner     { text-align: center; justify-content: center; }
}
@media (max-width: 768px) {
    .section { padding: 56px 0; }
    .nav-links { display: none; flex-direction: column; gap: 0; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-primary-dark); padding: 1rem; box-shadow: var(--shadow-md); }
    .nav-links.open { display: flex; }
    .hamburger { display: flex; }
    .hero-stats { gap: 1.5rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .services-grid  { grid-template-columns: 1fr; }
    .projects-grid  { grid-template-columns: 1fr; }
    .stats-grid     { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}