/* =========================================================
   İstanbul Hisar Su — Tasarım Tokenleri
   Palet: Derin lacivert (#0B2545), Kale mavisi (#12395E),
   Su mavisi (#1CA7D6), Buz beyazı (#F3FAFD), Amber (#F5A623)
   ========================================================= */
:root {
  --navy-deep: #0B2545;
  --navy-mid: #12395E;
  --aqua: #1CA7D6;
  --aqua-light: #6FD4F0;
  --ice: #F3FAFD;
  --amber: #F5A623;
  --amber-dark: #DB8B0C;
  --text-dark: #10222F;
  --text-mute: #55697A;
  --white: #FFFFFF;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px -12px rgba(11,37,69,0.25);
  --shadow-sm: 0 4px 14px -6px rgba(11,37,69,0.18);
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--ice);
  line-height: 1.6;
}
h1,h2,h3,h4,h5 { font-family: var(--font-display); color: var(--navy-deep); margin: 0 0 .5em; line-height: 1.2; }
p { margin: 0 0 1em; color: var(--text-mute); }
a { color: var(--aqua); text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: 999px; font-weight: 600; font-family: var(--font-display);
  cursor: pointer; border: none; text-decoration: none; transition: transform .18s ease, box-shadow .18s ease;
  font-size: 15px;
}
.btn-primary { background: linear-gradient(135deg, var(--aqua), var(--navy-mid)); color: var(--white); box-shadow: var(--shadow-sm); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-amber { background: var(--amber); color: var(--navy-deep); }
.btn-amber:hover { background: var(--amber-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; border: 2px solid var(--navy-deep); color: var(--navy-deep); }
.btn-outline:hover { background: var(--navy-deep); color: var(--white); }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92); backdrop-filter: blur(8px); box-shadow: 0 2px 16px rgba(11,37,69,.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 48px; width: auto; }
.brand-text { display: flex; flex-direction: column; }
.brand-text strong { font-family: var(--font-display); color: var(--navy-deep); font-size: 18px; }
.brand-text small { color: var(--aqua); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { color: var(--navy-mid); font-weight: 500; font-size: 15px; position: relative; }
.main-nav a.active, .main-nav a:hover { color: var(--aqua); }
.nav-cta { background: var(--navy-deep); color: var(--white) !important; padding: 10px 18px; border-radius: 999px; }
.nav-cta:hover { background: var(--aqua); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--navy-deep); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 70px 0 110px; background: radial-gradient(circle at 80% 20%, rgba(28,167,214,.18), transparent 55%), var(--navy-deep); }
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: center; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--aqua-light); font-weight: 600; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 18px; }
.hero h1 { color: var(--white); font-size: clamp(32px, 4.4vw, 52px); margin-bottom: 20px; }
.hero h1 span { color: var(--aqua-light); }
.hero p.lead { color: rgba(255,255,255,.78); font-size: 17px; max-width: 520px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-visual img { border-radius: var(--radius); box-shadow: 0 30px 60px -20px rgba(0,0,0,.5); }
.hero-badge { position: absolute; bottom: -18px; left: -18px; background: var(--white); border-radius: var(--radius-sm); padding: 14px 18px; box-shadow: var(--shadow); display: flex; align-items: center; gap: 10px; }
.hero-badge strong { display: block; color: var(--navy-deep); font-family: var(--font-display); font-size: 20px; }
.hero-badge span { color: var(--text-mute); font-size: 12px; }

/* ---------- Trust stats strip (signature element) ---------- */
.stats-strip { margin-top: -60px; position: relative; z-index: 5; }
.stats-strip .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat-drop { background: var(--white); border-radius: var(--radius); padding: 22px 18px; text-align: center; box-shadow: var(--shadow); border-top: 4px solid var(--aqua); }
.stat-drop strong { display: block; font-family: var(--font-display); font-size: 28px; color: var(--navy-deep); }
.stat-drop span { color: var(--text-mute); font-size: 13px; }

/* ---------- Section basics ---------- */
.section { padding: 90px 0; }
.section-tight { padding: 60px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 50px; }
.section-eyebrow { color: var(--aqua); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: 12px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); }
.section-alt { background: var(--white); }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 26px; }
.service-card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease; display: flex; flex-direction: column; }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card .thumb { height: 180px; overflow: hidden; }
.service-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.service-card .body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.service-card h3 { font-size: 19px; }
.service-card .body p { flex: 1; font-size: 14.5px; }
.service-card .more { font-weight: 600; color: var(--aqua); font-size: 14px; }

/* ---------- Why us / feature list ---------- */
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.why-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.why-list li { display: flex; gap: 14px; align-items: flex-start; }
.why-icon { flex-shrink: 0; width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, var(--aqua), var(--navy-mid)); display: flex; align-items: center; justify-content: center; color: white; font-weight: 700; }
.why-list h4 { margin: 0 0 4px; font-size: 16px; }
.why-list p { margin: 0; font-size: 14px; }
.why-image { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.why-image img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Testimonials ---------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 24px; }
.testimonial-card { background: var(--white); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); position: relative; }
.testimonial-card .stars { color: var(--amber); font-size: 15px; margin-bottom: 10px; }
.testimonial-card p.quote { color: var(--text-dark); font-style: italic; }
.testimonial-person { display: flex; align-items: center; gap: 12px; margin-top: 16px; }
.testimonial-person img { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; }
.testimonial-person .ph-avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--navy-mid); color: white; display: flex; align-items: center; justify-content: center; font-weight: 700; }
.testimonial-person strong { display: block; font-size: 14px; color: var(--navy-deep); }
.testimonial-person span { font-size: 12px; color: var(--text-mute); }

/* ---------- Blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 26px; }
.blog-card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .2s ease; }
.blog-card:hover { transform: translateY(-6px); }
.blog-card .thumb { height: 170px; overflow: hidden; background: var(--navy-mid); }
.blog-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.blog-card .body { padding: 20px; }
.blog-card .date { font-size: 12px; color: var(--aqua); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.blog-card h3 { font-size: 18px; margin: 8px 0; }
.blog-card p { font-size: 14px; }
.post-content { max-width: 760px; margin: 0 auto; font-size: 16.5px; }
.post-content h2, .post-content h3 { margin-top: 1.4em; }
.post-content img { border-radius: var(--radius-sm); margin: 20px 0; }
.post-content blockquote { border-left: 4px solid var(--aqua); padding-left: 18px; color: var(--text-mute); font-style: italic; margin: 20px 0; }
.post-hero { max-width: 900px; margin: 0 auto 40px; text-align: center; }
.post-hero img { border-radius: var(--radius); margin-top: 24px; box-shadow: var(--shadow); }
.post-meta { color: var(--aqua); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--white); border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 18px 22px; font-weight: 600; font-family: var(--font-display); color: var(--navy-deep); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; color: var(--aqua); font-size: 22px; }
.faq-item[open] summary::after { content: '−'; }
.faq-item .faq-answer { padding: 0 22px 18px; color: var(--text-mute); font-size: 14.5px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info-card { background: var(--navy-deep); color: white; border-radius: var(--radius); padding: 34px; }
.contact-info-card h3 { color: white; }
.contact-info-card p { color: rgba(255,255,255,.8); }
.contact-info-card a { color: var(--aqua-light); }
.form-card { background: white; border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow-sm); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; color: var(--navy-deep); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 14px; border-radius: 10px; border: 1.5px solid #DCE6ED; font-family: var(--font-body); font-size: 14.5px; background: var(--ice);
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--aqua); outline: none; background: white; }
.alert { padding: 14px 18px; border-radius: 10px; margin-bottom: 20px; font-size: 14px; }
.alert-success { background: #E4F8EC; color: #1C7C43; border: 1px solid #B9EAC9; }
.alert-error { background: #FDECEC; color: #B23434; border: 1px solid #F5C6C6; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(120deg, var(--navy-deep), var(--navy-mid)); color: white; border-radius: var(--radius); padding: 50px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px; }
.cta-band h3 { color: white; margin: 0 0 6px; font-size: 24px; }
.cta-band p { color: rgba(255,255,255,.75); margin: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,.75); position: relative; margin-top: 60px; }
.footer-wave { line-height: 0; transform: translateY(-100%); }
.footer-wave svg { width: 100%; height: 40px; display: block; }
.footer-wave path { fill: var(--navy-deep); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 34px; padding: 20px 20px 40px; }
.footer-logo { height: 44px; margin-bottom: 14px; background: white; padding: 6px 10px; border-radius: 8px; }
.footer-col h4 { color: white; font-size: 15px; margin-bottom: 14px; }
.footer-col a { display: block; color: rgba(255,255,255,.7); font-size: 14px; margin-bottom: 8px; }
.footer-col a:hover { color: var(--aqua-light); }
.footer-social a { display: inline-block; margin-right: 12px; }
.area-tag { display: inline-block; background: rgba(255,255,255,.08); padding: 5px 12px; border-radius: 999px; font-size: 12.5px; margin: 0 6px 6px 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; text-align: center; font-size: 13px; }

/* ---------- Float action buttons ---------- */
.float-actions { position: fixed; bottom: 22px; right: 22px; display: flex; flex-direction: column; gap: 12px; z-index: 100; }
.float-btn { display: flex; align-items: center; gap: 8px; padding: 12px 18px; border-radius: 999px; color: white; font-weight: 600; font-size: 14px; box-shadow: var(--shadow); transition: transform .18s ease; }
.float-btn:hover { transform: scale(1.05); }
.float-btn.whatsapp { background: #25D366; }
.float-btn.call { background: var(--amber); color: var(--navy-deep); }

/* ---------- 404 ---------- */
.page-404 { text-align: center; padding: 120px 20px; }
.page-404 h1 { font-size: 90px; color: var(--aqua); margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-inner, .why-grid, .contact-grid { grid-template-columns: 1fr; }
  .stats-strip .container { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .main-nav { position: fixed; top: 74px; left: 0; right: 0; background: white; flex-direction: column; align-items: flex-start; padding: 20px; gap: 16px; box-shadow: var(--shadow); transform: translateY(-140%); transition: transform .25s ease; }
  .main-nav.open { transform: translateY(0); }
  .nav-toggle { display: flex; }
  .stats-strip .container { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; text-align: center; }
}