/* ============================================================
   Op. Dr. Kadir Erdoğan Er — Göz Hastalıkları
   Tema: medikal mavi — güven / berraklık / "Işık Varsa, Umut Vardır"
   ============================================================ */

:root {
  --ink:      #0a2540;   /* derin lacivert */
  --teal:     #1565c0;   /* ana marka mavisi */
  --teal-600: #0e4ea0;
  --teal-300: #8bbbe8;
  --accent:   #1ea7e6;   /* parlak gök mavisi vurgu */
  --accent-600:#1488c2;
  --bg:       #f3f7fc;   /* serin kırık beyaz */
  --bg-2:     #e9f1fa;
  --surface:  #ffffff;
  --line:     #dde7f1;
  --text:     #16293d;
  --muted:    #56697e;
  --radius:   18px;
  --radius-sm:12px;
  --shadow:   0 18px 50px -22px rgba(10,37,64,.32);
  --shadow-sm:0 8px 24px -14px rgba(10,37,64,.28);
  --maxw:     1180px;
  --serif:    "Fraunces", Georgia, "Times New Roman", serif;
  --sans:     "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --grad-dark: linear-gradient(160deg, #0a2540 0%, #103a6b 55%, #0a2540 100%);
}

*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--sans); color: var(--text); background: var(--bg);
  line-height: 1.7; font-size: 17px; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--teal); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-600); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1,h2,h3 { font-family: var(--serif); font-weight: 600; line-height: 1.12; color: var(--ink); letter-spacing: -.01em; }
h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); margin: 0 0 .6em; }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
p { margin: 0 0 1.1em; }
.eyebrow {
  font-family: var(--sans); font-weight: 700; text-transform: uppercase;
  letter-spacing: .16em; font-size: .72rem; color: var(--teal);
  display: inline-flex; align-items: center; gap: .55rem; margin: 0 0 1rem;
}
.eyebrow::before { content:""; width: 26px; height: 2px; background: var(--accent); display:inline-block; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--sans); font-weight: 700; font-size: .98rem;
  padding: .85rem 1.5rem; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; white-space: nowrap;
}
.btn-primary { background: var(--teal); color: #fff; box-shadow: 0 10px 24px -10px rgba(21,101,192,.7); }
.btn-primary:hover { transform: translateY(-2px); color:#fff; background: var(--teal-600); box-shadow: 0 16px 30px -12px rgba(21,101,192,.85); }
.btn-ghost { border-color: rgba(255,255,255,.55); color:#fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); color:#fff; transform: translateY(-2px); }
.btn-outline { border-color: var(--teal); color: var(--teal); }
.btn-outline:hover { background: var(--teal); color:#fff; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50;
  background: rgba(243,247,252,.85); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 1rem; }
.brand { display:flex; align-items:center; gap:.7rem; font-family: var(--serif); font-weight:600; color: var(--ink); font-size: 1.18rem; }
.brand .mark {
  width: 40px; height: 40px; border-radius: 50%; flex: none;
  background: radial-gradient(circle at 50% 50%, #fff 0 16%, var(--accent) 17% 33%, var(--teal) 34% 70%, var(--ink) 71%);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.6), var(--shadow-sm);
}
.brand small { display:block; font-family: var(--sans); font-weight: 600; font-size:.66rem; letter-spacing:.13em; text-transform:uppercase; color: var(--teal); }
.nav-links { display:flex; align-items:center; gap: 1.5rem; list-style:none; margin:0; padding:0; }
.nav-links a { font-weight: 600; font-size: .96rem; color: var(--ink); position: relative; }
.nav-links a:hover { color: var(--teal); }
.nav-links a.active::after { content:""; position:absolute; left:0; bottom:-6px; width:100%; height:2px; background: var(--accent); }
.has-sub { position: relative; }
.submenu {
  position:absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(8px);
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius-sm);
  box-shadow: var(--shadow); padding: .5rem; min-width: 220px; list-style:none; margin:0;
  opacity:0; visibility:hidden; transition: all .22s;
}
.has-sub:hover .submenu, .has-sub:focus-within .submenu { opacity:1; visibility:visible; transform: translateX(-50%) translateY(0); }
.submenu a { display:block; padding:.55rem .8rem; border-radius:8px; font-size:.92rem; }
.submenu a:hover { background: var(--bg-2); }
.nav-cta { display:flex; align-items:center; gap:.8rem; }
.menu-toggle { display:none; background:none; border:none; cursor:pointer; padding:8px; }
.menu-toggle span { display:block; width:24px; height:2px; background:var(--ink); margin:5px 0; transition:.3s; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; color:#fff;
  background:
    radial-gradient(900px 600px at 82% -10%, rgba(30,167,230,.30), transparent 55%),
    radial-gradient(700px 500px at 8% 110%, rgba(120,170,230,.26), transparent 55%),
    var(--grad-dark);
}
/* ince ızgara dokusu — çok hafif derinlik */
.hero::before { content:""; position:absolute; inset:0; pointer-events:none; opacity:.35;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask: radial-gradient(130% 120% at 85% 0%, #000 25%, transparent 80%);
          mask: radial-gradient(130% 120% at 85% 0%, #000 25%, transparent 80%); }
.hero .wrap { position:relative; z-index:2; }
.hero-inner { max-width: 660px; padding: clamp(3.5rem,8vw,6.5rem) 0; }
.hero h1 { color:#fff; }
.hero .lede { font-size: 1.18rem; color: rgba(255,255,255,.85); max-width: 54ch; margin: 1.2rem 0 2rem; }
.hero .badge { display:inline-flex; gap:.5rem; align-items:center; background: rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2); padding:.4rem .9rem; border-radius:999px; font-size:.82rem; color:#fff; margin-bottom:1.6rem; }
.hero .badge b { color: var(--accent); display:inline-flex; }
.hero .badge .i-star { display:block; }
.nav-links .i-caret { vertical-align:middle; opacity:.7; }
.submenu .i-caret { display:none; }
.hero-cta { display:flex; gap:1rem; flex-wrap:wrap; }
.hero-stats { display:flex; gap:2.5rem; margin-top:3rem; flex-wrap:wrap; }
.hero-stats .n { font-family:var(--serif); font-size:2.2rem; color: #fff; line-height:1; }
.hero-stats .l { font-size:.86rem; color:rgba(255,255,255,.75); margin-top:.3rem; }

/* ---------- Sections ---------- */
.section { padding: clamp(3.5rem, 7vw, 6rem) 0; }
.section.tight { padding: clamp(2.5rem,5vw,4rem) 0; }
.section-head { max-width: 680px; margin-bottom: 2.6rem; }
.section.center .section-head { margin-left:auto; margin-right:auto; text-align:center; }
.lead { font-size: 1.12rem; color: var(--muted); }
.bg-surface { background: var(--surface); }
.bg-soft { background: var(--bg-2); }

/* ---------- Service grid ---------- */
.cards { display:grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 1.3rem; }
.card { background: var(--surface); border:1px solid var(--line); border-radius: var(--radius);
  padding: 1.8rem 1.6rem; transition: transform .28s, box-shadow .28s, border-color .28s; position:relative; overflow:hidden; }
.card::before { content:""; position:absolute; inset:0 auto auto 0; width:0; height:4px; background:var(--accent); transition:width .3s; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card:hover::before { width:100%; }
.card .ico { width:48px; height:48px; border-radius:12px; display:grid; place-items:center; background: var(--bg-2); margin-bottom:1.1rem; color: var(--teal); }
.card .ico svg { width:26px; height:26px; }
.card h3 { margin:.2rem 0 .5rem; }
.card p { color: var(--muted); font-size:.96rem; margin-bottom:1rem; }
.card .more { font-weight:700; font-size:.9rem; color: var(--teal); display:inline-flex; gap:.35rem; align-items:center; }
.card:hover .more { color: var(--accent-600); gap:.6rem; }

/* ---------- Split / about ---------- */
.split { display:grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem,5vw,4rem); align-items:center; }
.split.rev { grid-template-columns: .9fr 1.1fr; }
.media-frame { position:relative; border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow);
  background: var(--grad-dark); aspect-ratio: 4/5; }
.media-frame img.photo { width:100%; height:100%; object-fit:cover; }
.media-frame .ring { position:absolute; inset:0; display:grid; place-items:center; }
.media-frame .ring i { width:62%; aspect-ratio:1; border-radius:50%;
  background: radial-gradient(circle, #fff 0 6%, var(--accent) 7% 16%, rgba(21,101,192,.9) 17% 60%, transparent 62%); opacity:.85; }
.media-tag { position:absolute; left:18px; bottom:18px; background:var(--surface); border-radius:12px; padding:.8rem 1rem; box-shadow:var(--shadow-sm); }
.media-tag b { font-family:var(--serif); color:var(--ink); }
.media-tag span { display:block; font-size:.78rem; color:var(--muted); }

/* ---------- Certifika & medya galeri ---------- */
.gallery { display:grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap:1rem; }
.gallery figure { margin:0; border-radius:var(--radius-sm); overflow:hidden; border:1px solid var(--line);
  background:var(--surface); box-shadow:var(--shadow-sm); transition: transform .25s; }
.gallery figure:hover { transform: translateY(-4px); }
.gallery img { width:100%; height:100%; object-fit:cover; aspect-ratio:16/10; }
.certs { display:grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap:1rem; }
.certs figure { margin:0; border-radius:var(--radius-sm); overflow:hidden; border:1px solid var(--line); background:#fff; box-shadow:var(--shadow-sm); }
.certs img { width:100%; height:auto; display:block; }
.certs figcaption { padding:.7rem .9rem; font-size:.82rem; color:var(--muted); }

/* ---------- Article / content pages ---------- */
.article { max-width: 820px; }
.article h2 { margin-top: 2.4rem; }
.article h2:first-child { margin-top:0; }
.article p { color:#26384c; }
.article ul { padding-left: 0; list-style:none; margin: 0 0 1.4rem; }
.article ul li { position:relative; padding-left: 1.8rem; margin-bottom:.6rem; }
.article ul li::before { content:""; position:absolute; left:0; top:.62em; width:9px; height:9px; border-radius:50%;
  background: var(--accent); box-shadow: 0 0 0 4px rgba(30,167,230,.18); }

.page-hero { background:
    radial-gradient(700px 400px at 85% -20%, rgba(30,167,230,.22), transparent 60%), var(--grad-dark);
  color:#fff; padding: clamp(3rem,6vw,5rem) 0 clamp(2.4rem,5vw,3.6rem); }
.page-hero h1 { color:#fff; max-width: 18ch; }
.page-hero .lede { color: rgba(255,255,255,.82); max-width:60ch; margin-top:1rem; font-size:1.1rem; }
.breadcrumb { font-size:.84rem; color: rgba(255,255,255,.6); margin-bottom:1rem; }
.breadcrumb a { color: rgba(255,255,255,.85); }
.breadcrumb span { margin:0 .4rem; }

.layout { display:grid; grid-template-columns: minmax(0,1fr) 300px; gap: clamp(2rem,4vw,3.5rem); align-items:start; }
.sidebar { position: sticky; top: 100px; display:flex; flex-direction:column; gap:1.2rem; }
.side-card { background: var(--surface); border:1px solid var(--line); border-radius: var(--radius); padding:1.4rem; }
.side-card h4 { margin:0 0 .9rem; font-family:var(--serif); color:var(--ink); font-size:1.05rem; }
.side-nav { list-style:none; margin:0; padding:0; }
.side-nav li { margin-bottom:.2rem; }
.side-nav a { display:block; padding:.5rem .7rem; border-radius:9px; font-size:.92rem; color: var(--text); font-weight:600; }
.side-nav a:hover, .side-nav a.active { background: var(--bg-2); color: var(--teal); }
.side-cta { background: var(--grad-dark); color:#fff; border:none; }
.side-cta h4 { color:#fff; }
.side-cta p { color: rgba(255,255,255,.8); font-size:.9rem; }

/* ---------- FAQ ---------- */
.faq { display:flex; flex-direction:column; gap:.8rem; }
.faq details { background: var(--surface); border:1px solid var(--line); border-radius: var(--radius-sm); overflow:hidden; }
.faq summary { cursor:pointer; list-style:none; padding:1.1rem 1.3rem; font-family:var(--serif); font-weight:600;
  color:var(--ink); font-size:1.05rem; display:flex; justify-content:space-between; gap:1rem; align-items:center; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; font-family:var(--sans); font-size:1.5rem; color:var(--teal); transition:transform .25s; line-height:1; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details[open] summary { color: var(--teal); }
.faq .ans { padding: 0 1.3rem 1.2rem; color: var(--muted); }
.faq .ans p:last-child { margin-bottom:0; }

/* ---------- CTA band ---------- */
.cta-band { background:
    radial-gradient(600px 300px at 80% 120%, rgba(30,167,230,.32), transparent 60%), var(--grad-dark);
  color:#fff; border-radius: var(--radius); padding: clamp(2.4rem,5vw,3.4rem); text-align:center; }
.cta-band h2 { color:#fff; }
.cta-band p { color: rgba(255,255,255,.82); max-width: 56ch; margin: 0 auto 1.6rem; }
.cta-band .hero-cta { justify-content:center; }

/* ---------- Contact ---------- */
.contact-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.info-list { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:1.2rem; }
.info-list li { display:flex; gap:1rem; align-items:flex-start; }
.info-list .ico { width:44px; height:44px; flex:none; border-radius:12px; background:var(--bg-2); display:grid; place-items:center; color:var(--teal); }
.info-list b { display:block; font-family:var(--serif); color:var(--ink); }
.info-list span { color:var(--muted); font-size:.96rem; }
.map-frame { border-radius: var(--radius); overflow:hidden; box-shadow: var(--shadow-sm); border:1px solid var(--line); min-height:340px; }
.map-frame iframe { width:100%; height:100%; min-height:340px; border:0; display:block; }

/* ---------- Randevu formu ---------- */
.form-wrap { display:grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2rem,5vw,3.5rem); align-items:start; }
.form-intro .ticks { list-style:none; margin:1.4rem 0 0; padding:0; display:flex; flex-direction:column; gap:.8rem; }
.form-intro .ticks li { display:flex; gap:.7rem; align-items:flex-start; color:var(--text); }
.form-intro .ticks li .i-check { flex:none; width:1.4rem; height:1.4rem; padding:.28rem; border-radius:50%;
  background:var(--bg-2); color:var(--teal); }
.appt-form { background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding: clamp(1.6rem,3vw,2.2rem); box-shadow:var(--shadow); }
.field { margin-bottom:1.1rem; }
.field label { display:block; font-weight:700; font-size:.9rem; color:var(--ink); margin-bottom:.4rem; }
.field label .req { color:#d23b3b; }
.field input, .field select, .field textarea {
  width:100%; font-family:inherit; font-size:1rem; color:var(--text); background:var(--bg);
  border:1.5px solid var(--line); border-radius:12px; padding:.8rem 1rem; transition:border-color .2s, box-shadow .2s; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline:none; border-color:var(--teal); box-shadow:0 0 0 4px rgba(21,101,192,.12); }
.field textarea { min-height:120px; resize:vertical; }
.field-row { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.hp { position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
.consent { display:flex; gap:.6rem; align-items:flex-start; font-size:.86rem; color:var(--muted); margin-bottom:1.2rem; }
.consent input { width:18px; height:18px; margin-top:.2rem; flex:none; accent-color:var(--teal); }
.appt-form .btn-primary { width:100%; justify-content:center; font-size:1.05rem; padding:1rem; }
.form-status { border-radius:12px; padding:.9rem 1.1rem; margin-bottom:1.1rem; font-size:.95rem; font-weight:600; display:none; }
.form-status.show { display:block; }
.form-status.ok { background:#e6f6ec; color:#1a7a3e; border:1px solid #b6e3c4; }
.form-status.err { background:#fdeaea; color:#b5302f; border:1px solid #f3c0c0; }
@media (max-width:960px){ .form-wrap { grid-template-columns:1fr; } }
@media (max-width:560px){ .field-row { grid-template-columns:1fr; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.72); padding: clamp(3rem,5vw,4rem) 0 1.5rem; margin-top: 4rem; }
.footer-grid { display:grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2rem; }
.site-footer h5 { font-family:var(--sans); text-transform:uppercase; letter-spacing:.12em; font-size:.76rem; color: var(--accent); margin:0 0 1.1rem; }
.site-footer a { color: rgba(255,255,255,.72); }
.site-footer a:hover { color:#fff; }
.site-footer ul { list-style:none; margin:0; padding:0; }
.site-footer li { margin-bottom:.6rem; font-size:.94rem; }
.footer-brand { display:flex; align-items:center; gap:.7rem; color:#fff; font-family:var(--serif); font-size:1.2rem; margin-bottom:1rem; }
.footer-brand .mark { width:38px; height:38px; }
.footer-about { font-size:.94rem; max-width: 34ch; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.12); margin-top:2.5rem; padding-top:1.5rem;
  display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; font-size:.85rem; color:rgba(255,255,255,.5); }

/* ---------- Reveal ---------- */
.reveal { opacity:0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{opacity:1;transform:none;transition:none;} html{scroll-behavior:auto;} }

/* ---------- Responsive ---------- */
@media (max-width: 960px){
  .split, .split.rev { grid-template-columns: 1fr; }
  .split.rev .media-frame { order:-1; }
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; flex-direction: row; flex-wrap:wrap; }
  .side-card { flex:1; min-width: 240px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px){
  .hero-iris { width:380px; height:380px; right:-160px; opacity:.4; }
}
@media (max-width: 760px){
  .nav-links { position: fixed; inset: 74px 0 auto 0; background: var(--surface); flex-direction:column;
    align-items:flex-start; padding: 1.2rem 24px; gap:.3rem; border-bottom:1px solid var(--line);
    box-shadow: var(--shadow); transform: translateY(-130%); transition: transform .32s; }
  .nav-links.open { transform: translateY(0); }
  .nav-links li { width:100%; }
  .nav-links a { display:block; padding:.6rem 0; width:100%; }
  .submenu { position:static; transform:none; opacity:1; visibility:visible; box-shadow:none; border:none; padding:0 0 0 1rem; min-width:0; }
  .menu-toggle { display:block; }
  .nav-cta .btn-outline { display:none; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap:1.6rem; }
}
.menu-open .menu-toggle span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.menu-open .menu-toggle span:nth-child(2){ opacity:0; }
.menu-open .menu-toggle span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }