:root{
  /* Köşe yuvarlatma ölçeği (kanonik) — modüller bunu kullanmalı.
     Değerler mevcut kullanımla birebir; fallback'ler görünümü korur. */
  --r-xs:4px; --r-sm:6px; --r-md:8px; --r-lg:12px; --r-xl:16px; --r-2xl:24px; --r-full:50%;
  /* Derinlik (gölge) ölçeği — tek kaynak; modüller bunu kullanmalı. */
  --shadow-sm:0 4px 20px rgba(0,0,0,.5); --shadow-md:0 8px 40px rgba(0,0,0,.5); --shadow-lg:0 8px 48px rgba(0,0,0,.6);
  /* Tipografi ölçeği — tek kaynak. xs taban (.72rem) = okunabilirlik tabanı. */
  --fs-xs:.72rem; --fs-sm:.8rem; --fs-base:.85rem; --fs-md:1rem; --fs-lg:1.15rem; --fs-xl:1.3rem; --fs-2xl:1.8rem; --fs-3xl:2.2rem;
  --bg0:#0a1214;--bg1:#0d181b;--bg2:#142226;--bg3:#1d3035;
  --border:rgba(255,255,255,0.08);--border2:rgba(255,255,255,0.15);
  --text:#eaf3f4;--text2:#8ba0a4;--text3:#4a5c60;
  --accent:#14b8a6;--accent2:#5eead4;--accent-glow:rgba(20,184,166,.15);
  --blue:#38a8d8;--blue2:#7dd3ec;--blue-glow:rgba(56,168,216,.15);
  --green:#10b981;--green-glow:rgba(16,185,129,.12);
  --amber:#f59e0b;--red:#ef4444;--purple:#5eead4;
  --glass:rgba(255,255,255,0.03);--glass2:rgba(255,255,255,0.06);
  --r:10px;--r2:16px;
  --shadow:0 8px 32px rgba(0,0,0,.4);
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',monospace;
}
/* Light Theme */
[data-theme="light"]{
  --bg0:#f5fafb;--bg1:#ffffff;--bg2:#eef5f6;--bg3:#dde9eb;
  --border:rgba(0,0,0,0.08);--border2:rgba(0,0,0,0.15);
  --text:#0f2a30;--text2:#48626a;--text3:#8aa0a6;
  --accent:#0e7c86;--accent2:#14b8a6;--accent-glow:rgba(14,124,134,.1);
  --blue:#1e6fb8;--blue2:#378add;--blue-glow:rgba(30,111,184,.1);
  --green:#059669;--green-glow:rgba(5,150,105,.08);
  --amber:#d97706;--red:#dc2626;--purple:#0e7c86;
  --glass:rgba(0,0,0,0.02);--glass2:rgba(0,0,0,0.04);
  --shadow:0 8px 32px rgba(0,0,0,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg0);
  background-image:radial-gradient(at 0% 0%,rgba(20,184,166,0.12) 0px,transparent 50%),radial-gradient(at 100% 100%,rgba(56,168,216,0.08) 0px,transparent 50%);
  background-attachment:fixed;
  color:var(--text);
  min-height:100vh;
  font-size:14px;
  line-height:1.6;
  overflow-x:hidden;
  letter-spacing:-0.01em;
  -webkit-font-smoothing:antialiased;
}
/* Metin seçimi düzeltmesi - her yerde seçilebilir */
::selection{background:rgba(20,184,166,0.3);color:#fff}
::-moz-selection{background:rgba(20,184,166,0.3);color:#fff}
/* Webapp hissi: geri çekince/overscroll ile sayfa kapanmasın (APK gibi olmasın) */
html, body { overscroll-behavior: none; overscroll-behavior-y: contain; }