/* =========================================================================
   SMSOnayVer.com — Tema Sistemi (Modern Fintech / Güven)
   Pure CSS · Tek kaynak değişken sistemi · Mobil-first
   ========================================================================= */

:root {
  /* Renk — Marka */
  --navy-950: #06152E;
  --navy-900: #0A1F44;
  --navy-800: #0F2A5C;
  --navy-700: #14356F;
  --navy-600: #1B4187;

  --blue-600: #1D4ED8;
  --blue-500: #2563EB;
  --blue-400: #3B82F6;
  --blue-300: #60A5FA;

  --green-600: #059669;
  --green-500: #10B981;
  --green-400: #34D399;

  /* Nötr */
  --ink:       #0B1220;
  --slate-800: #1E293B;
  --slate-600: #475569;
  --muted:     #64748B;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --surface:   #FFFFFF;
  --surface-2: #F8FAFC;

  /* Anlamsal */
  --bg:            var(--surface);
  --text:          var(--ink);
  --text-muted:    var(--muted);
  --primary:       var(--blue-500);
  --primary-hover: var(--blue-600);
  --accent:        var(--green-500);

  /* Tipografi */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-lg:   1.125rem;
  --fs-xl:   1.375rem;
  --fs-2xl:  1.75rem;
  --fs-3xl:  2.25rem;
  --fs-4xl:  3rem;
  --fs-5xl:  3.75rem;
  --lh-tight: 1.1;
  --lh-snug:  1.3;
  --lh-base:  1.65;

  /* Boşluk (4px grid) */
  --sp-1: 0.25rem; --sp-2: 0.5rem;  --sp-3: 0.75rem; --sp-4: 1rem;
  --sp-5: 1.25rem; --sp-6: 1.5rem;  --sp-8: 2rem;    --sp-10: 2.5rem;
  --sp-12: 3rem;   --sp-16: 4rem;   --sp-20: 5rem;   --sp-24: 6rem;

  /* Radius / Gölge / Geçiş */
  --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 24px; --r-full: 999px;
  --shadow-sm: 0 1px 2px rgba(10,31,68,.06), 0 1px 3px rgba(10,31,68,.08);
  --shadow-md: 0 4px 12px rgba(10,31,68,.08), 0 2px 4px rgba(10,31,68,.06);
  --shadow-lg: 0 12px 32px rgba(10,31,68,.12), 0 4px 8px rgba(10,31,68,.06);
  --shadow-glow: 0 0 0 1px rgba(37,99,235,.15), 0 8px 30px rgba(37,99,235,.25);
  --ease: cubic-bezier(.16,1,.3,1);
  --t-fast: .16s var(--ease);
  --t-med:  .28s var(--ease);

  --container: 1200px;
  --header-h: 72px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }
h1,h2,h3,h4 { line-height: var(--lh-snug); font-weight: 700; letter-spacing: -0.02em; }
:focus-visible { outline: 3px solid var(--blue-300); outline-offset: 2px; border-radius: 4px; }

/* ---------- Düzen yardımcıları ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--sp-6); }
.section { padding-block: var(--sp-24); }
.section-sm { padding-block: var(--sp-16); }
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-size: var(--fs-sm); font-weight: 600; letter-spacing: .04em;
  text-transform: uppercase; color: var(--primary);
}
.section-head { max-width: 720px; margin: 0 auto var(--sp-12); text-align: center; }
.section-head h2 { font-size: var(--fs-3xl); color: var(--navy-900); margin-block: var(--sp-3); }
.section-head p { color: var(--text-muted); font-size: var(--fs-lg); }

/* ---------- Butonlar ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6); border-radius: var(--r-full);
  font-weight: 600; font-size: var(--fs-base); line-height: 1;
  transition: transform var(--t-fast), box-shadow var(--t-med), background var(--t-fast);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-600));
  color: #fff; box-shadow: var(--shadow-glow);
}
.btn-primary:hover { box-shadow: 0 0 0 1px rgba(37,99,235,.2), 0 12px 36px rgba(37,99,235,.4); transform: translateY(-2px); }
.btn-accent {
  background: linear-gradient(135deg, var(--green-400), var(--green-600));
  color: #05271c; box-shadow: 0 8px 24px rgba(16,185,129,.35);
}
.btn-accent:hover { transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,.08); color: #fff; border: 1px solid rgba(255,255,255,.18); }
.btn-ghost:hover { background: rgba(255,255,255,.16); }
.btn-outline { background: transparent; color: var(--navy-800); border: 1.5px solid var(--slate-200); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: var(--sp-4) var(--sp-8); font-size: var(--fs-lg); }
.btn-block { width: 100%; }

/* ---------- Rozet / chip ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: var(--r-full);
  font-size: var(--fs-sm); font-weight: 600;
}
.badge-glass { background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.16); backdrop-filter: blur(8px); }
.badge-green { background: rgba(16,185,129,.12); color: var(--green-600); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green-400); box-shadow: 0 0 0 4px rgba(52,211,153,.25); }

/* ---------- Erişilebilirlik ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}