/* ============================================================
   EKO EKSPERTİZ — SİSTEM CSS (tek doğruluk kaynağı)
   Hem tasarim-sistemi.html hem tüm site sayfaları bunu kullanır.
   Token mimarisi: reference → semantic → component.
   Araştırma: web/tasarim-arastirmasi.md (M3/Carbon/Polaris/Atlassian/Apple HIG + WCAG)
   ============================================================ */

:root{
  /* 1) REFERENCE (primitive) */
  --green-50:#edf7de; --green-100:#e2f3e1; --green-200:#d6edb5; --green-300:#bfe4bd;
  --green-400:#8bb45a; --green-500:#5b831f; --green-600:#4d7019; --green-700:#436017; --green-900:#133012;
  --ink:#133012; --text:#2b3a23; --muted:#5f6f56; --line:#e6ecdd; --line-strong:#cdd9bf; --bg-soft:#f6f8f3;
  --success:#2e7d32; --success-bg:#e8f5e9; --warning:#b26a00; --warning-bg:#fff4e5;
  --error:#c0392b; --error-bg:#fdecea; --info:#1f6feb; --info-bg:#e8f1fe;

  /* 2) SEMANTIC — bileşenler bunları kullanır */
  --color-bg:#ffffff; --color-surface:#ffffff; --color-surface-soft:var(--bg-soft);
  --color-surface-brand:var(--green-50); --color-surface-inverse:var(--green-900);
  --color-text:var(--text); --color-text-strong:var(--ink); --color-text-muted:var(--muted); --color-text-inverse:#ffffff;
  --color-border:var(--line); --color-border-strong:var(--line-strong);
  --color-brand:var(--green-500); --color-brand-hover:var(--green-700); --color-on-brand:#ffffff;
  --color-link:var(--green-700); --focus-ring:0 0 0 3px var(--green-300);

  /* tipografi / köşe / gölge / boşluk */
  --font:"Noto Sans",system-ui,-apple-system,sans-serif;
  --r-sm:8px; --r-md:14px; --r-lg:22px; --r-pill:999px;
  --sh-sm:0 2px 8px rgba(19,48,18,.06); --sh-md:0 6px 24px rgba(19,48,18,.10); --sh-lg:0 16px 48px rgba(19,48,18,.14);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
  --measure:68ch; --container:1180px;
}

/* ---- base ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--color-text);background:var(--color-bg);line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{color:var(--color-text-strong);line-height:1.2;font-weight:700}
h2{font-size:clamp(26px,3.4vw,38px)}
a{color:var(--color-link);text-decoration:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:6px}

/* ---- layout yardımcıları ---- */
.wrap{max-width:var(--container);margin:0 auto;padding:0 24px}
.sec{padding:var(--s9) 0}
.sec--soft{background:var(--color-surface-soft)}
.sec--green{background:var(--color-surface-brand)}
.sec-head{max-width:680px;margin:0 auto var(--s7);text-align:center}
.sec-tag{display:block;font-size:13px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--green-600);margin-bottom:10px}
.lead{font-size:19px;color:var(--color-text-muted);max-width:var(--measure)}
.row{display:flex;gap:var(--s4);flex-wrap:wrap;align-items:center}
.grid{display:grid;gap:22px}
.cols-5{grid-template-columns:repeat(5,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
.cols-2{grid-template-columns:repeat(2,1fr)}

/* ---- tipografi yardımcı sınıfları ---- */
.tg-over{font-size:13px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--green-600)}
.tg-lead{font-size:19px;color:var(--color-text-muted)}
.tg-small{font-size:14px;color:var(--color-text-muted)}

/* ---- BUTON ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:var(--font);font-weight:700;font-size:16px;line-height:1;padding:14px 24px;border-radius:var(--r-pill);border:2px solid transparent;cursor:pointer;transition:.18s;text-decoration:none;min-height:44px}
.btn-primary{background:var(--color-brand);color:var(--color-on-brand)}
.btn-primary:hover{background:var(--color-brand-hover)}
.btn-dark{background:var(--green-900);color:#fff}
.btn-dark:hover{background:#0b2010}
.btn-ghost{background:transparent;color:var(--green-900);border-color:var(--color-border-strong)}
.btn-ghost:hover{background:var(--green-50)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost-light:hover{background:rgba(255,255,255,.14)}
.btn-wa{background:#25d366;color:#fff}
.btn-wa:hover{background:#1eb858}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn-sm{font-size:14px;padding:9px 16px;min-height:36px}
.btn-lg{font-size:18px;padding:17px 30px}

/* ---- FORM ---- */
.field{display:block;margin-bottom:var(--s4)}
.field label{display:block;font-size:13px;font-weight:700;color:var(--color-text-strong);margin-bottom:6px}
.input,.select,.textarea{width:100%;font-family:var(--font);font-size:15px;padding:12px 14px;border:1px solid var(--color-border-strong);border-radius:var(--r-sm);background:#fff;color:var(--color-text);min-height:44px}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--color-brand);box-shadow:var(--focus-ring)}
.input::placeholder{color:#9aa890}
.check{display:flex;align-items:center;gap:10px;font-size:15px;margin-bottom:10px;cursor:pointer}
.check input{width:18px;height:18px;accent-color:var(--color-brand)}

/* ---- KART ---- */
.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-md);padding:26px 22px;transition:.18s}
.card:hover{box-shadow:var(--sh-md);border-color:var(--green-300);transform:translateY(-3px)}
.card .ico{width:48px;height:48px;border-radius:12px;background:var(--color-surface-brand);display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:22px}
.card h3{font-size:18px;margin-bottom:6px}
.card p{font-size:14px;color:var(--color-text-muted)}
.card-sol{background:var(--color-surface);border:1px solid var(--color-border);border-top:3px solid var(--color-brand);border-radius:var(--r-md);padding:24px}
.card-sol h3{font-size:16px;margin-bottom:6px}
.card-sol p{font-size:13.5px;color:var(--color-text-muted)}
.panel{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-md);padding:32px}
.panel-green{background:var(--color-surface-brand);border:1px solid var(--green-300);border-radius:var(--r-md);padding:32px}

/* ---- ROZET / ETİKET ---- */
.pill{display:inline-block;background:var(--color-surface-brand);color:var(--green-700);font-weight:700;font-size:13px;padding:7px 14px;border-radius:var(--r-pill)}

/* ---- UYARI KUTUSU (ikon + renk) ---- */
.note{display:flex;gap:10px;border-radius:var(--r-sm);padding:14px 16px;font-size:14px;border:1px solid;margin-bottom:12px;max-width:var(--measure)}
.note .ni{font-weight:700;flex:0 0 auto}
.note-success{background:var(--success-bg);border-color:#bfe0c2;color:#1e5e22}
.note-warning{background:var(--warning-bg);border-color:#f0d9b0;color:#8a5200}
.note-error{background:var(--error-bg);border-color:#f3c4be;color:#962b20}
.note-info{background:var(--info-bg);border-color:#c3d8fb;color:#1550b8}

/* ---- AKORDEON ---- */
.acc details{border-bottom:1px solid var(--color-border);padding:14px 0}
.acc summary{font-weight:500;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px;color:var(--color-text-strong)}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";color:var(--color-brand);font-weight:700;font-size:18px}
.acc details[open] summary::after{content:"–"}
.acc p{font-size:14px;color:var(--color-text-muted);padding-top:10px}

/* ---- ADIMLAR ---- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-md);padding:24px}
.step .n{width:38px;height:38px;border-radius:50%;background:var(--color-brand);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14px;color:var(--color-text-muted)}

/* ============================================================
   SİTE İSKELETİ (header / hero / bölümler / footer)
   ============================================================ */

/* header */
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border)}
.site-head .nav-in{display:flex;align-items:center;justify-content:space-between;height:74px}
.site-head .logo{height:38px;display:block}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-weight:500;font-size:15px;color:var(--color-text)}
.nav-links a:hover{color:var(--color-brand)}
.nav-cta{display:flex;gap:12px;align-items:center}
.nav-phone{font-weight:700;color:var(--color-text-strong);font-size:15px}
.burger{display:none;font-size:26px;background:none;border:0;color:var(--color-text-strong);cursor:pointer}

/* hero */
.hero{position:relative;min-height:560px;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(19,48,18,.93) 0%,rgba(19,48,18,.78) 44%,rgba(67,96,23,.42) 100%)}
.hero-in{position:relative;z-index:2;max-width:660px;padding:64px 0}
.hero h1{color:#fff;font-size:clamp(32px,5vw,52px);margin-bottom:18px}
.hero p{font-size:20px;color:#eaf4e3;margin-bottom:30px;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-trust{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
.hero-trust span{font-size:14px;color:#e7f2de}

/* güven şeridi */
.trust-bar{background:var(--color-surface-inverse);color:#fff}
.trust-bar .wrap{display:flex;justify-content:space-around;gap:20px;padding:24px;flex-wrap:wrap;text-align:center}
.trust-bar b{display:block;font-size:24px;color:#fff}
.trust-bar small{color:#bcd3ab;font-size:13px}

/* değer aracı */
.tool{background:linear-gradient(120deg,var(--green-900),var(--green-700));color:#fff;border-radius:24px;padding:48px;display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.tool h2{color:#fff}
.tool p{color:#dcebcf;margin-top:12px;max-width:46ch}
.tool-form{background:#fff;border-radius:16px;padding:26px;color:var(--color-text)}
.tool-form .frow{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.tool-note{font-size:12px;color:var(--color-text-muted);margin-top:12px;text-align:center}

/* video + otorite */
.auth{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.auth video{width:100%;border-radius:18px;box-shadow:var(--sh-md);display:block;background:#000}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}

/* split (örnek rapor + sss) */
.split{display:grid;grid-template-columns:1fr 1fr;gap:24px}

/* cta band */
.cta-band{background:var(--color-brand);color:#fff;border-radius:24px;padding:48px;text-align:center}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{color:#eaf4e3;margin:0 auto 24px;max-width:52ch}
.cta-band .btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* footer */
.site-foot{background:var(--color-surface-inverse);color:#cdddbf;padding:60px 0 28px;font-size:14px}
.site-foot .logo{height:36px;margin-bottom:16px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
.site-foot h4{color:#fff;font-size:15px;margin-bottom:14px}
.site-foot a{display:block;padding:5px 0;color:#cdddbf}
.site-foot a:hover{color:#fff}
.foot-bot{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#9fb88d;font-size:13px}

/* yüzen whatsapp */
.wa-float{position:fixed;right:22px;bottom:22px;z-index:60;background:#25d366;color:#fff;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.wa-float svg{width:30px;height:30px}

/* mockup şeridi */
.mock{background:#fff4d6;border-bottom:1px solid #f0e0a8;color:#7a5a00;font-size:13px;text-align:center;padding:8px}

/* ---- responsive ---- */
@media(max-width:900px){
  .nav-links,.nav-phone{display:none}
  .burger{display:block}
  .cols-5,.cols-4,.steps{grid-template-columns:repeat(2,1fr)}
  .tool,.auth,.split,.foot-grid{grid-template-columns:1fr}
  .tool,.cta-band{padding:32px}
  .sec{padding:var(--s8) 0}
}
@media(max-width:540px){.cols-5,.cols-4,.steps,.cols-2{grid-template-columns:1fr}}