/* =========================================================
   Prof. Dr. Hasan Yüksel — Çocuk Allerji ve Astım Kliniği
   Renk ve düzen, Şablon.pptx içindeki tasarım referansından
   ========================================================= */

:root{
  --ink:        #12333a;
  --ink-soft:   #4a6b70;
  --teal:       #1f7a72;
  --teal-dark:  #14524e;
  --teal-light: #4fb3a6;
  --sky:        #e4f1fa;
  --sky-deep:   #cfe6f5;
  --mint:       #e3f2e9;
  --mint-deep:  #cfe9db;
  --brand-orange:      #e67817;  /* logodaki turuncu */
  --brand-orange-dark: #b45309;  /* koyu turuncu — beyaz üzerinde okunaklı */
  --brand-green:       #00923f;  /* logodaki yeşil */
  --paper:      #ffffff;
  --bg:         #f7fbfc;

  --radius:     20px;
  --radius-sm:  14px;
  --shadow:     0 10px 30px rgba(18,51,58,.08);
  --shadow-lg:  0 22px 50px rgba(18,51,58,.14);
  --wrap:       1180px;
  --head-h:     78px;

  --sans: "Inter", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  --display: "Poppins", "Segoe UI", system-ui, Arial, sans-serif;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; scroll-padding-top: calc(var(--head-h) + 12px); }

body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}

/* height:auto şart: <img width=".." height="..."> öznitelikleri tarayıcıda
   sunum ipucu olarak height:<px> uygular ve görseli dikey olarak gerer. */
img{ max-width:100%; display:block; height:auto; }
a{ color:var(--teal); text-decoration:none; }
a:hover{ color:var(--teal-dark); }

h1,h2,h3{ font-family:var(--display); line-height:1.2; margin:0 0 .5em; color:var(--ink); }

.container{ width:min(100% - 40px, var(--wrap)); margin-inline:auto; }

.section{ padding:88px 0; }
.band-mint{ background:var(--mint); }
.band-sky{ background:var(--sky); }

.section-head{ text-align:center; max-width:680px; margin:0 auto 48px; }
.section-head h2{ font-size:clamp(1.7rem, 3.2vw, 2.3rem); }
.section-head h2::after{
  content:""; display:block; width:56px; height:4px; border-radius:4px;
  background:var(--teal-light); margin:16px auto 0;
}
.section-head p{ margin:18px 0 0; color:var(--ink-soft); }

/* ---------------- Erişilebilirlik ---------------- */
.skip-link{
  position:absolute; left:12px; top:-60px; z-index:200;
  background:var(--teal); color:#fff; padding:10px 18px;
  border-radius:0 0 10px 10px; font-size:.9rem; font-weight:600;
  transition:top .2s ease;
}
.skip-link:focus{ top:0; color:#fff; }

:where(a, button, [tabindex]):focus-visible{
  outline:3px solid var(--teal-light);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------------- Header ---------------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(18,51,58,.07);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{ box-shadow:0 6px 22px rgba(18,51,58,.08); }

.header-inner{
  min-height:var(--head-h);
  display:flex; align-items:center; justify-content:space-between; gap:18px;
}

.brand{ display:flex; align-items:center; gap:12px; color:var(--ink); }
.brand-mark{ width:48px; height:48px; flex:none; }
.brand-text{ display:flex; flex-direction:column; line-height:1.25; white-space:nowrap; }
.brand-text strong{ font-family:var(--display); font-size:1.02rem; font-weight:600; }
.brand-text small{ font-size:.76rem; color:var(--ink-soft); letter-spacing:.02em; }

.main-nav{ display:flex; align-items:center; gap:20px; }
.main-nav a{
  font-size:.86rem; font-weight:700; color:var(--ink);
  padding:6px 0; position:relative; white-space:nowrap;
}
.main-nav a::after{
  content:""; position:absolute; left:0; bottom:0; height:2px; width:0;
  background:var(--teal-light); border-radius:2px; transition:width .25s ease;
}
.main-nav a:hover, .main-nav a.active{ color:var(--teal); }
.main-nav a:hover::after, .main-nav a.active::after{ width:100%; }

.header-phone{
  display:inline-flex; align-items:center; gap:8px;
  background:var(--mint); color:var(--teal-dark);
  padding:9px 16px; border-radius:999px;
  font-size:.88rem; font-weight:600; white-space:nowrap;
  transition:background .2s ease;
}
.header-phone:hover{ background:var(--mint-deep); color:var(--teal-dark); }
.header-phone svg{ width:16px; height:16px; }

.nav-toggle{
  display:none; width:44px; height:44px; border:0; border-radius:12px;
  background:var(--mint); cursor:pointer; padding:0;
  flex-direction:column; align-items:center; justify-content:center; gap:5px;
}
.nav-toggle span{ width:20px; height:2px; background:var(--teal-dark); border-radius:2px; transition:.25s; }
.nav-toggle.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero{
  position:relative; overflow:hidden;
  background:
    radial-gradient(900px 460px at 12% -10%, #ffffff 0%, rgba(255,255,255,0) 60%),
    linear-gradient(135deg, var(--sky) 0%, var(--mint) 100%);
  padding:76px 0 96px;
}
.hero::after{
  content:""; position:absolute; right:-160px; top:-120px;
  width:520px; height:520px; border-radius:50%;
  background:rgba(255,255,255,.45);
}
.hero-inner{
  position:relative; z-index:1;
  display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center;
}

.eyebrow{
  display:inline-block; background:var(--paper); color:var(--brand-orange-dark);
  font-family:var(--display);
  font-size:clamp(1rem, 1.6vw, 1.35rem); font-weight:700; letter-spacing:.01em;
  padding:13px 28px; border-radius:999px; box-shadow:var(--shadow);
}
/* SEO: <h1> anahtar kelimeli rozet (.eyebrow), slogan görsel başlık (.hero-title) */
h1.eyebrow{ margin:0; line-height:1.3; }
.hero-title{
  font-family:var(--display); color:var(--ink); line-height:1.2;
  font-size:clamp(2.2rem, 5vw, 3.5rem); font-weight:700;
  margin:88px 0 18px; letter-spacing:-.02em;
}
.hero-title em{ font-style:normal; color:var(--brand-green); }
.hero-lead{ font-size:1.08rem; color:var(--ink-soft); max-width:46ch; margin:0; }

.hero-photo{ position:relative; }
.photo-frame{
  border-radius:28px; overflow:hidden; box-shadow:var(--shadow-lg);
  border:8px solid var(--paper); aspect-ratio:1/1;
}
.photo-frame img{ width:100%; height:100%; object-fit:cover; }
.photo-badge{
  position:absolute; left:-18px; bottom:-26px;
  background:var(--paper); border-radius:var(--radius-sm);
  padding:14px 18px; box-shadow:var(--shadow); max-width:280px;
  border-left:4px solid var(--brand-orange);
}
.photo-badge strong{ display:block; font-family:var(--display); font-size:.98rem; }
.photo-badge span{ font-size:.78rem; color:var(--ink-soft); line-height:1.45; }

/* ---------------- Konu kartları ---------------- */
.topics{ padding-top:0; margin-top:-56px; position:relative; z-index:2; }
.card-row{ display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; }

.topic-card{
  background:var(--paper); border-radius:var(--radius); padding:30px 28px;
  box-shadow:var(--shadow); color:var(--ink);
  transition:transform .25s ease, box-shadow .25s ease;
  display:flex; flex-direction:column;
}
.topic-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-lg); color:var(--ink); }
.topic-icon{
  width:62px; height:62px; border-radius:18px; background:var(--mint);
  color:var(--teal); display:grid; place-items:center; margin-bottom:20px;
}
.topic-icon svg{ width:32px; height:32px; }
.topic-card h3{ font-size:1.18rem; margin-bottom:10px; }
.topic-card p{ margin:0 0 18px; color:var(--ink-soft); font-size:.94rem; flex:1; }
.more{ font-size:.88rem; font-weight:600; color:var(--teal); }
.more::after{ content:" →"; transition:margin .2s; }
.topic-card:hover .more::after{ margin-left:4px; }

/* ---------------- Uzmanlık ---------------- */
.grid-4{ display:grid; grid-template-columns:repeat(4, 1fr); gap:22px; }
.mini-card{
  background:var(--paper); border-radius:var(--radius); padding:28px 24px;
  box-shadow:var(--shadow); text-align:center;
  transition:transform .25s ease;
}
.mini-card:hover{ transform:translateY(-4px); }
.mini-card .dot{
  width:14px; height:14px; border-radius:50%; display:block; margin:0 auto 16px;
  background:var(--teal-light); box-shadow:0 0 0 7px rgba(79,179,166,.18);
}
.mini-card h3{ font-size:1.02rem; margin:0; }

/* ---------------- Hizmetler ---------------- */
.grid-3{ display:grid; grid-template-columns:repeat(3, 1fr); gap:22px; }

.service{
  background:var(--paper); border-radius:var(--radius-sm); padding:24px 26px;
  border:1px solid rgba(18,51,58,.07); position:relative;
  padding-left:60px; transition:border-color .25s ease, transform .25s ease;
}
.service::before{
  content:""; position:absolute; left:24px; top:29px;
  width:18px; height:18px; border-radius:50%;
  background:var(--mint);
  box-shadow:inset 0 0 0 2px var(--teal-light);
}
.service:hover{ transform:translateY(-3px); border-color:var(--teal-light); }
.service h3{ font-size:1rem; margin:0; font-weight:600; }
.service h3 span{ display:block; font-family:var(--sans); font-weight:400; font-size:.84rem; color:var(--ink-soft); margin-top:4px; }

/* ---------------- Hastalıklar ---------------- */
.disease-cols{ align-items:start; }
.disease-card{
  background:var(--paper); border-radius:var(--radius); padding:32px 30px;
  box-shadow:var(--shadow);
}
.disease-card h3{
  font-size:1.2rem; padding-bottom:14px; margin-bottom:18px;
  border-bottom:2px solid var(--mint-deep);
}
.disease-card > p{ margin:0 0 16px; font-size:.94rem; color:var(--ink-soft); }
.disease-card ul{ list-style:none; margin:0; padding:0; }
.disease-card li{
  position:relative; padding:7px 0 7px 24px; font-size:.94rem; color:var(--ink-soft);
  border-bottom:1px dashed rgba(18,51,58,.08);
}
.disease-card li:last-child{ border-bottom:0; }
.disease-card li::before{
  content:""; position:absolute; left:4px; top:16px;
  width:7px; height:7px; border-radius:50%; background:var(--teal-light);
}

/* ---------------- Klipler (YouTube gömme) ----------------
   256fr / 81fr oranı, 16:9 ve 9:16 videoların yüksekliğini
   birbirine tam olarak eşitler. */
.video-grid{
  max-width:1060px; margin-inline:auto;
  display:grid; grid-template-columns:256fr 81fr; gap:26px; align-items:start;
}
.video-item{ margin:0; }
.video-item figcaption{
  margin-top:14px; font-size:.92rem; font-weight:500;
  color:var(--ink-soft); line-height:1.45;
}
.video-item--vertical figcaption{ font-size:.86rem; }

.video-embed{
  position:relative; aspect-ratio:16/9;
  border-radius:var(--radius); overflow:hidden;
  box-shadow:var(--shadow-lg); background:#000;
}
.video-embed--vertical{ aspect-ratio:9/16; }
.video-embed--vertical .play{ width:64px; height:64px; }
.video-embed--vertical .play svg{ width:29px; height:29px; }
.video-embed iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }

.video-card{
  display:block; position:relative; width:100%; height:100%;
  padding:0; border:0; background:#000; cursor:pointer;
}
.video-card img{
  width:100%; height:100%; object-fit:cover;
  transition:transform .5s ease, opacity .3s ease; opacity:.92;
}
.video-card:hover img{ transform:scale(1.03); opacity:.8; }
.video-card .play{
  position:absolute; inset:0; margin:auto;
  width:84px; height:84px; border-radius:50%;
  background:rgba(255,255,255,.94); color:var(--teal);
  display:grid; place-items:center;
  box-shadow:0 10px 30px rgba(0,0,0,.25);
  transition:transform .25s ease;
}
.video-card .play svg{ width:38px; height:38px; margin-left:4px; }
.video-card:hover .play{ transform:scale(1.08); }

/* ---------------- Hakkımızda ---------------- */
.about-grid{ display:grid; grid-template-columns:.9fr 1.1fr; gap:56px; align-items:center; }
.about-photo img{
  border-radius:var(--radius); box-shadow:var(--shadow-lg);
  aspect-ratio:4/3; object-fit:cover; width:100%;
}
.about-copy h2{ font-size:clamp(1.7rem, 3vw, 2.2rem); }
.about-copy p{ color:var(--ink-soft); margin:0 0 16px; }
.signature{
  font-family:var(--display); font-weight:600; color:var(--teal) !important;
  margin-top:24px !important; padding-top:18px; border-top:2px solid var(--mint-deep);
  display:inline-block;
}

/* ---------------- Sık Sorulan Sorular ---------------- */
.faq{ max-width:860px; margin-inline:auto; }
.faq details{
  background:var(--paper); border-radius:var(--radius-sm); box-shadow:var(--shadow);
  margin-bottom:14px; overflow:hidden;
}
.faq summary{
  cursor:pointer; list-style:none; position:relative;
  padding:18px 56px 18px 22px;
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary h3{ font-size:1.02rem; font-weight:600; margin:0; }
.faq summary::after{
  content:"+"; position:absolute; right:22px; top:50%; transform:translateY(-50%);
  width:28px; height:28px; border-radius:50%; background:var(--mint);
  color:var(--teal); font-family:var(--display); font-size:1.3rem; line-height:28px; text-align:center;
}
.faq details[open] summary::after{ content:"\2212"; }
.faq details p{ margin:0; padding:0 22px 20px; color:var(--ink-soft); font-size:.96rem; }
.faq-note{ text-align:center; font-size:.85rem; color:var(--ink-soft); margin:24px 0 0; }

/* ---------------- Sizin Köşeniz ---------------- */
.gallery{ columns:3; column-gap:22px; }
.shot{
  display:block; width:100%; border:0; font:inherit; text-align:left;
  margin:0 0 22px; break-inside:avoid;
  background:var(--paper); border-radius:var(--radius-sm); padding:10px;
  box-shadow:var(--shadow); cursor:zoom-in;
  transition:transform .25s ease, box-shadow .25s ease;
}
.shot:hover{ transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.shot img{ border-radius:10px; width:100%; }

/* ---------------- İletişim ---------------- */
.contact-grid{ display:grid; grid-template-columns:repeat(4, 1fr); gap:22px; }
.contact-card{
  background:var(--paper); border-radius:var(--radius); padding:28px 26px;
  box-shadow:var(--shadow);
}
.contact-card h3{ font-size:1.02rem; color:var(--teal); margin-bottom:12px; }
.contact-card p{ margin:0; font-size:.94rem; color:var(--ink-soft); line-height:1.8; }
.muted{ color:#93aeb2; font-size:.84rem; }

/* ---------------- Harita ---------------- */
.map-wrap{
  position:relative; margin-top:26px;
  border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow);
  background:var(--paper);
}
.map-wrap iframe{
  display:block; width:100%; height:380px; border:0;
  filter:saturate(.9);
}
.map-link{
  position:absolute; right:18px; bottom:18px;
  background:var(--paper); color:var(--teal-dark);
  padding:11px 20px; border-radius:999px;
  font-size:.88rem; font-weight:600; box-shadow:var(--shadow-lg);
}
.map-link:hover{ background:var(--mint); color:var(--teal-dark); }

/* ---------------- Mobil alt çubuk ---------------- */
.action-bar{
  display:none;
  position:fixed; left:0; right:0; bottom:0; z-index:70;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(10px);
  border-top:1px solid rgba(18,51,58,.1);
  box-shadow:0 -6px 22px rgba(18,51,58,.1);
  padding-bottom:env(safe-area-inset-bottom);
}
.action-bar a{
  flex:1; display:flex; flex-direction:column; align-items:center; gap:3px;
  padding:11px 6px 10px; color:var(--ink-soft); font-size:.74rem; font-weight:600;
}
.action-bar a:hover, .action-bar a:active{ color:var(--teal); background:var(--mint); }
.action-bar svg{ width:21px; height:21px; }

/* ---------------- Footer ---------------- */
.site-footer{ background:var(--ink); color:#cfe0e2; padding:52px 0 30px; }
.footer-inner{ display:grid; gap:26px; justify-items:center; text-align:center; }
.footer-brand{ display:flex; align-items:center; gap:14px; }
.footer-brand .brand-mark{ width:54px; height:54px; }
.footer-brand strong{ display:block; font-family:var(--display); color:#fff; }
.footer-brand span{ font-size:.84rem; }
.footer-links{ display:flex; flex-wrap:wrap; justify-content:center; gap:8px 26px; }
.footer-links a{ color:#cfe0e2; font-size:.88rem; }
.footer-links a:hover{ color:var(--teal-light); }
.footer-address{ margin:0; font-size:.84rem; color:#cfe0e2; max-width:640px; }
.footer-address a{ color:#fff; }
.copyright{ margin:0; font-size:.8rem; color:#8fa8ac; border-top:1px solid rgba(255,255,255,.1); padding-top:22px; width:100%; }

/* ---------------- Lightbox ---------------- */
.lightbox{
  position:fixed; inset:0; z-index:100; display:none;
  background:rgba(10,28,32,.92); align-items:center; justify-content:center; padding:40px 16px;
}
.lightbox.open{ display:flex; }
.lightbox img{ max-width:min(92vw, 900px); max-height:88vh; border-radius:12px; background:#fff; }
.lb-close{
  position:absolute; top:18px; right:22px; width:44px; height:44px;
  border:0; border-radius:50%; background:rgba(255,255,255,.14); color:#fff;
  font-size:1.8rem; line-height:1; cursor:pointer;
}
.lb-nav{
  position:absolute; top:50%; transform:translateY(-50%);
  width:48px; height:48px; border:0; border-radius:50%;
  background:rgba(255,255,255,.14); color:#fff; font-size:1.2rem; cursor:pointer;
}
.lb-prev{ left:18px; } .lb-next{ right:18px; }
.lb-close:hover, .lb-nav:hover{ background:rgba(255,255,255,.28); }

/* ---------------- Reveal ---------------- */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .6s ease, transform .6s ease; }
.reveal.visible{ opacity:1; transform:none; }

/* ---------------- Responsive ---------------- */
@media (max-width: 1140px){
  /* Dar masaüstünde telefon butonu yalnızca simgeye iner */
  .header-phone span{ display:none; }
  .header-phone{ padding:10px; border-radius:50%; }
}

@media (max-width: 1000px){
  .hero-inner{ grid-template-columns:1fr; gap:52px; }
  .hero-photo{ max-width:420px; margin-inline:auto; }
  .photo-badge{ position:static; max-width:none; margin-top:18px; }
  .card-row{ grid-template-columns:1fr; }
  .topics{ margin-top:-40px; }
  .grid-4, .grid-3, .contact-grid{ grid-template-columns:repeat(2, 1fr); }
  .about-grid{ grid-template-columns:1fr; gap:36px; }
  .gallery{ columns:2; }

  .nav-toggle{ display:flex; }
  .main-nav{
    position:absolute; top:100%; left:0; right:0;
    background:var(--paper); flex-direction:column; align-items:stretch; gap:0;
    padding:8px 20px 18px; box-shadow:var(--shadow);
    display:none;
  }
  .main-nav.open{ display:flex; }
  .main-nav a{ padding:13px 0; border-bottom:1px solid rgba(18,51,58,.07); }
  .main-nav a::after{ display:none; }
}

@media (max-width: 860px){
  /* Mobilde alt çubuk devreye girer, header'daki telefon gereksiz kalır */
  .header-phone{ display:none; }
  .action-bar{ display:flex; }
  body{ padding-bottom:64px; }
  .site-footer{ padding-bottom:44px; }
}

@media (max-width: 760px){
  /* Klipler alt alta; dikey klip ortalanır */
  .video-grid{ grid-template-columns:1fr; gap:34px; justify-items:center; }
  .video-item{ width:100%; }
  .video-item--vertical{ width:min(100%, 300px); }
}

@media (max-width: 620px){
  .section{ padding:64px 0; }
  .grid-4, .grid-3, .contact-grid{ grid-template-columns:1fr; }
  .gallery{ columns:1; }
  .hero{ padding:52px 0 76px; }
  .brand-text small{ display:none; }
  .map-wrap iframe{ height:300px; }
  .map-link{ right:50%; transform:translateX(50%); bottom:14px; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
  *{ animation:none !important; }
}