/* Dentravia — "Kazınmış Kapı" identity
   Night + pearl light + pearl silver ("İnci Gümüşü"). Bodoni Moda for display, Manrope for text.
   Sections alternate dark (.dark) and ivory (.light); --cut follows the surface so the engraved mark stays hollow. */
:root{
  --night:#121318; --night-2:#191a20; --ivory:#f3f3f4; --ivory-2:#e8e9ec;
  --cream:#eeeff2; --ink:#1b1d24; --muted-l:#5c5f6a; --muted-d:#9a9ea8;
  --gold:#c3c7d0; --gold-text-l:#5f6573; --gold-text-d:#c3c7d0;
  --line-l:#dcdee3; --line-d:#ffffff1a;
  --foil:linear-gradient(120deg,#aeb3bd,#e9ebef 45%,#c3c7d0 70%,#9ea3ae);
  --wa:#1f9d55;
  --display:"Bodoni Moda",Didot,"Bodoni 72",Georgia,serif;
  --sans:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  --cut:var(--night);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);font-size:16px;line-height:1.65;background:var(--night);color:var(--cream);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{font-family:var(--display);font-weight:400;line-height:1.1;text-wrap:balance}
em{font-style:italic}
.wrap{max-width:1160px;margin:0 auto;padding-inline:24px}
.narrow{max-width:820px}

/* surfaces */
.dark{background:var(--night);color:var(--cream);--cut:var(--night)}
.light{background:var(--ivory);color:var(--ink);--cut:var(--ivory)}
.dark + .dark{background:var(--night-2);--cut:var(--night-2)}

/* type helpers */
.eyebrow{font-size:11.5px;font-weight:600;letter-spacing:.42em;text-transform:uppercase;display:flex;align-items:center;gap:16px}
.dark .eyebrow{color:var(--gold-text-d)} .light .eyebrow{color:var(--gold-text-l)}
.eyebrow::before{content:"";width:36px;height:1px;background:currentColor;opacity:.7}
.sec-head{margin-bottom:56px;max-width:640px}
.sec-head h2{font-size:clamp(2rem,4.2vw,3.1rem);margin-top:18px}
.sub{margin-top:16px}
.dark .sub,.dark p{color:var(--muted-d)} .light .sub,.light p{color:var(--muted-l)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:16px 30px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.btn:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.btn-gold{background:#d9dce2;color:var(--night);box-shadow:0 10px 30px #c3c7d01f}
.btn-gold:hover{background:#e6e8ec;transform:translateY(-2px);box-shadow:0 14px 36px #c3c7d033}
.btn-line{border:1px solid #c3c7d099;color:var(--gold-text-d)}
.btn-line:hover{background:#c3c7d01a}
.btn.sm{padding:10px 20px;font-size:11px}
.link-arrow{font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;border-bottom:1px solid currentColor;padding-bottom:4px;color:var(--cream)}
.link-arrow::after{content:" →"}

/* nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:#121318d9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line-d);--cut:#121318}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:78px;gap:24px}
.logo{display:flex;align-items:center;gap:14px}
.logo-mark{width:30px;height:37px;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1}
.logo-name{font-family:var(--display);font-size:19px;letter-spacing:.42em;color:var(--cream)}
.logo-sub{font-size:8.5px;letter-spacing:.6em;color:var(--gold-text-d);margin-top:7px}
.links{display:flex;gap:34px;font-size:12px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-d)}
.links a:hover{color:var(--cream)}

/* hero */
.hero{padding:96px 0 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:auto -20% -40% 30%;height:80%;background:radial-gradient(ellipse at center,#c3c7d014,transparent 65%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:72px;align-items:center;position:relative}
.hero-copy h1{font-size:clamp(2.8rem,6.4vw,5.2rem);margin:26px 0 28px;letter-spacing:-.01em}
.hero-copy h1 em{background:var(--foil);-webkit-background-clip:text;background-clip:text;color:transparent;padding-right:.06em}
.lead{font-size:1.1rem;max-width:540px}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:30px;margin-top:40px}

.arch-panel{justify-self:end;width:min(100%,380px);border:1px solid #c3c7d066;border-radius:200px 200px 4px 4px;padding:64px 40px 40px;text-align:center;position:relative;outline:1px solid #c3c7d026;outline-offset:8px}
.arch-mark{width:58px;height:72px;margin:0 auto 34px;display:block}
.arch-panel dl{display:grid;gap:22px}
.arch-panel dl div{padding-top:22px;border-top:1px solid var(--line-d)}
.arch-panel dl div:first-child{border-top:0;padding-top:0}
.arch-panel dt{font-size:10.5px;letter-spacing:.32em;text-transform:uppercase;color:var(--gold-text-d)}
.arch-panel dd{font-family:var(--display);font-size:1.7rem;margin-top:6px;color:var(--cream)}

.promise{list-style:none;display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 32px;margin-top:96px;padding-block:28px;border-top:1px solid var(--line-d);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted-d)}
.promise li{display:flex;align-items:center;gap:12px}
.promise li::before{content:"";width:5px;height:5px;transform:rotate(45deg);background:var(--gold)}

/* sections */
.section{padding-block:120px}

/* treatments: editorial list with hairlines */
.treatments{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line-l)}
.treatments .card{padding:34px 30px 38px 0;border-bottom:1px solid var(--line-l);min-width:0}
.treatments .card:not(:nth-child(3n+1)){padding-left:30px;border-left:1px solid var(--line-l)}
.treatments h3{font-size:1.55rem;color:var(--ink);margin-bottom:12px}
.treatments p{font-size:15px}

/* journey */
.steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line-d)}
.steps li{padding:34px 24px 10px 0;min-width:0}
.steps li + li{padding-left:24px;border-left:1px solid var(--line-d)}
.num{display:block;font-family:var(--display);font-style:italic;font-size:2.2rem;line-height:1;background:var(--foil);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:22px}
.steps h3{font-size:1.3rem;color:var(--cream);margin-bottom:8px}
.steps p{font-size:14.5px}

/* dentists: arch portraits */
.people{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.person{text-align:center;min-width:0}
.avatar{width:100%;max-width:260px;aspect-ratio:4/5;margin:0 auto 26px;border-radius:200px 200px 4px 4px;background:var(--ivory-2);border:1px solid var(--line-l);display:grid;place-items:center;font-family:var(--display);font-size:3rem;color:var(--gold-text-l);object-fit:cover;outline:1px solid #9ea3ae55;outline-offset:6px}
.person h3{font-size:1.6rem;color:var(--ink)}
.role{font-size:11px!important;font-weight:600;letter-spacing:.28em;text-transform:uppercase;color:var(--gold-text-l)!important;margin:10px 0 14px}
.person p:last-child{font-size:15px;max-width:300px;margin-inline:auto}

/* clinics */
.clinics{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.clinics .card{border:1px solid var(--line-d);border-radius:4px;padding:40px;position:relative;min-width:0}
.clinics .card::before{content:"";position:absolute;inset:8px;border:1px solid #c3c7d01f;border-radius:2px;pointer-events:none}
.clinics h3{font-size:1.8rem;color:var(--cream)}
.clinics .role{color:var(--gold-text-d)!important}
.clinic ul{list-style:none;display:grid;gap:10px;margin-top:20px;color:var(--muted-d);font-size:15px}
.clinic li{display:flex;gap:12px;align-items:baseline}
.clinic li::before{content:"";width:5px;height:5px;flex:none;transform:rotate(45deg) translateY(-2px);background:var(--gold)}

/* faq */
.faq details{border-bottom:1px solid var(--line-l);padding:26px 0}
.faq details:first-child{border-top:1px solid var(--line-l)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:24px;font-family:var(--display);font-size:1.35rem;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--sans);font-weight:300;font-size:1.6rem;line-height:1;color:var(--gold-text-l);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin-top:14px;max-width:680px;font-size:15.5px}

/* closing */
.closing{padding-block:130px;text-align:center}
.closing-inner{display:flex;flex-direction:column;align-items:center}
.closing-mark{width:64px;height:79px;margin-bottom:36px}
.closing h2{font-size:clamp(2rem,4.6vw,3.4rem)}
.closing p{margin:20px 0 40px}

/* footer */
.foot{padding-block:56px;border-top:1px solid var(--line-d)}
.foot-inner{display:grid;gap:18px}
.small{font-size:12.5px;color:var(--muted-d);max-width:640px}

/* floating whatsapp */
.wa-float{position:fixed;right:22px;bottom:calc(22px + env(safe-area-inset-bottom,0px));width:58px;height:58px;border-radius:50%;background:var(--wa);color:#fff;display:grid;place-items:center;box-shadow:0 10px 26px #0006,0 0 0 4px #12131866;z-index:30;transition:transform .2s}
.wa-float:hover{transform:scale(1.06)}

@media (max-width:980px){
  .links{display:none}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .arch-panel{justify-self:center}
  .treatments{grid-template-columns:1fr 1fr}
  .treatments .card:not(:nth-child(3n+1)){padding-left:0;border-left:0}
  .treatments .card:nth-child(2n){padding-left:28px;border-left:1px solid var(--line-l)}
  .steps{grid-template-columns:1fr 1fr}
  .steps li,.steps li + li{padding:28px 20px 20px 0;border-left:0;border-bottom:1px solid var(--line-d)}
  .people{grid-template-columns:1fr 1fr}
  .clinics{grid-template-columns:1fr}
  .section{padding-block:88px}
}
@media (max-width:600px){
  .wrap{padding-inline:18px}
  .nav-inner{height:66px}
  .logo-name{font-size:16px;letter-spacing:.32em}
  .nav .btn{display:none}
  .hero{padding-top:64px}
  .treatments,.people,.steps{grid-template-columns:1fr}
  .treatments .card:nth-child(2n){padding-left:0;border-left:0}
  .promise{flex-direction:column;margin-top:64px}
  .clinics .card{padding:30px 24px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}