/* ============================================================
   BURAKPARLAK32 — GLOBAL STYLESHEET v3
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&display=swap');

/* ── Design Tokens ── */
:root {
  --color-primary:       #0c2d5a;
  --color-primary-dark:  #071d3d;
  --color-primary-light: #164a8f;
  --color-primary-muted: rgba(12,45,90,.06);
  --color-accent:        #00a86b;
  --color-accent-dark:   #007a4d;
  --color-accent-light:  #00cc88;
  --color-accent-muted:  rgba(0,168,107,.08);
  --color-gold:          #e8a020;
  --color-gold-muted:    rgba(232,160,32,.1);
  --color-violet:        #6d28d9;
  --color-violet-muted:  rgba(109,40,217,.08);
  --color-danger:        #dc2626;
  --color-success:       #16a34a;

  --color-gray-50:  #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;

  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Inter', sans-serif;

  --section-padding: clamp(4rem, 7vw, 7rem);
  --navbar-h: 72px;

  --shadow-xs:   0 1px 2px rgb(0 0 0 / .04);
  --shadow-sm:   0 1px 3px rgb(0 0 0 / .06), 0 1px 2px rgb(0 0 0 / .04);
  --shadow-md:   0 4px 8px rgb(0 0 0 / .07), 0 2px 4px rgb(0 0 0 / .04);
  --shadow-lg:   0 10px 20px rgb(0 0 0 / .08), 0 4px 8px rgb(0 0 0 / .05);
  --shadow-xl:   0 20px 40px rgb(0 0 0 / .1),  0 8px 16px rgb(0 0 0 / .06);
  --shadow-2xl:  0 32px 64px rgb(0 0 0 / .14);
  --shadow-card: 0 2px 16px rgb(12 45 90 / .07), 0 1px 4px rgb(0 0 0 / .03);
  --shadow-card-hover: 0 12px 40px rgb(12 45 90 / .13), 0 4px 12px rgb(0 0 0 / .06);
  --shadow-primary: 0 8px 24px rgb(12 45 90 / .28);
  --shadow-accent:  0 8px 24px rgb(0 168 107 / .3);

  --radius-xs:  4px;
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  20px;
  --radius-2xl: 28px;
  --radius-3xl: 36px;

  --transition:        0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s  cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--color-gray-800);
  background: #fff;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }

/* ── Layout ── */
.container        { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }
.container-wide   { max-width: 1400px; }
.container-narrow { max-width: 820px; }
section { padding: var(--section-padding) 0; }

/* ── Typography ── */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gray-900);
  letter-spacing: -.02em;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 3vw, 2.375rem);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -.03em;
  line-height: 1.15;
}
.section-subtitle {
  font-size: 1.0625rem;
  color: var(--color-gray-500);
  max-width: 560px;
  line-height: 1.75;
}
.text-center { text-align: center; }
.text-center .section-subtitle { margin: 0 auto; }

/* ── Section Header ── */
.section-header { margin-bottom: 3rem; }
.section-header.text-center { display: flex; flex-direction: column; align-items: center; gap: .875rem; }
.section-header:not(.text-center) { display: flex; flex-direction: column; gap: .875rem; }

/* ── Badges ── */
.badge {
  display: inline-flex; align-items: center; gap: .375rem;
  padding: .3125rem .875rem; border-radius: 999px;
  font-size: .75rem; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase; white-space: nowrap;
}
.badge-primary { background: var(--color-primary-muted); color: var(--color-primary); }
.badge-accent  { background: var(--color-accent-muted);  color: var(--color-accent-dark); }
.badge-gold    { background: var(--color-gold-muted);    color: #9a6100; }
.badge-violet  { background: var(--color-violet-muted);  color: var(--color-violet); }
.badge-white   { background: rgba(255,255,255,.15); color: #fff; border: 1px solid rgba(255,255,255,.25); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem; padding: .75rem 1.75rem;
  border-radius: var(--radius-md); font-size: .9375rem; font-weight: 600;
  border: 2px solid transparent; transition: var(--transition);
  white-space: nowrap; position: relative; line-height: 1;
  -webkit-user-select: none; user-select: none;
}
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); box-shadow: var(--shadow-primary); }
.btn-primary:hover { background: var(--color-primary-light); border-color: var(--color-primary-light); transform: translateY(-2px); box-shadow: 0 12px 28px rgb(12 45 90 / .36); }
.btn-accent { background: var(--color-accent); color: #fff; border-color: var(--color-accent); box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); transform: translateY(-2px); box-shadow: 0 12px 28px rgb(0 168 107 / .4); }
.btn-outline { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-primary); }
.btn-white { background: #fff; color: var(--color-primary); border-color: transparent; box-shadow: var(--shadow-md); }
.btn-white:hover { background: var(--color-gray-50); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-ghost { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.2); }
.btn-ghost:hover { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.35); }
.btn-lg   { padding: 1rem 2.25rem; font-size: 1rem; border-radius: var(--radius-lg); }
.btn-sm   { padding: .5rem 1.25rem; font-size: .875rem; border-radius: var(--radius-sm); }
.btn-xs   { padding: .375rem .875rem; font-size: .8125rem; border-radius: var(--radius-sm); }
.btn-full { width: 100%; }
.btn:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }

/* ── Cards ── */
.card {
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card); border: 1px solid var(--color-gray-100);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  overflow: hidden;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-card-hover); border-color: var(--color-gray-200); }
.card-body   { padding: 1.75rem; }
.card-header { padding: 1.25rem 1.75rem; border-bottom: 1px solid var(--color-gray-100); }
.card-footer { padding: 1.25rem 1.75rem; border-top: 1px solid var(--color-gray-100); background: var(--color-gray-50); }

/* ── Grids ── */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 1.25rem; }
@media (max-width:1024px) { .grid-4 { grid-template-columns:repeat(2,1fr); } .grid-3 { grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px)  { .grid-2,.grid-3,.grid-4 { grid-template-columns:1fr; } }

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: .4375rem; }
.form-label { font-size: .875rem; font-weight: 600; color: var(--color-gray-700); letter-spacing: -.01em; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: .8125rem 1rem;
  border: 1.5px solid var(--color-gray-200); border-radius: var(--radius-md);
  font-size: .9375rem; color: var(--color-gray-800); background: #fff;
  transition: var(--transition); outline: none; appearance: none; -webkit-appearance: none;
}
.form-input:hover, .form-select:hover { border-color: var(--color-gray-300); }
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(12,45,90,.1); }
.form-input.error { border-color: var(--color-danger); box-shadow: 0 0 0 3px rgba(220,38,38,.08); }
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right .875rem center; padding-right: 2.5rem;
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-error { font-size: .8125rem; color: var(--color-danger); margin-top: .125rem; display: flex; align-items: center; gap: .3rem; }
.form-hint  { font-size: .8125rem; color: var(--color-gray-400); }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width:480px) { .form-row-2 { grid-template-columns: 1fr; } }

/* ── Range Slider ── */
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 5px; border-radius: 999px;
  background: var(--color-gray-200); outline: none; cursor: pointer; transition: var(--transition);
}
input[type="range"]:hover { background: var(--color-gray-300); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--color-primary); border: 3px solid #fff;
  box-shadow: 0 2px 8px rgb(12 45 90 / .3); cursor: pointer;
  transition: transform var(--transition-bounce), box-shadow var(--transition);
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); box-shadow: 0 4px 14px rgb(12 45 90 / .4); }
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.1); }
input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--color-primary); border: 3px solid #fff; box-shadow: 0 2px 8px rgb(12 45 90 / .3); cursor: pointer; }
.slider-labels { display: flex; justify-content: space-between; font-size: .7rem; font-weight: 500; color: var(--color-gray-400); margin-top: .375rem; letter-spacing: .01em; }

/* ── Divider ── */
.divider { height: 1px; background: var(--color-gray-100); margin: 1.5rem 0; }

/* ── Utilities ── */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.text-primary { color: var(--color-primary); }
.text-accent  { color: var(--color-accent-dark); }
.text-muted   { color: var(--color-gray-400); }
.font-bold    { font-weight: 700; }
.w-full { width: 100%; }
.relative { position: relative; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: .5rem; } .gap-4 { gap: 1rem; } .gap-6 { gap: 1.5rem; }
.mt-4 { margin-top: 1rem; } .mt-6 { margin-top: 1.5rem; } .mt-8 { margin-top: 2rem; }

/* ── Fade-in Animasyon ── */
.fade-in { opacity: 0; transform: translateY(28px); transition: opacity .65s ease, transform .65s ease; }
.fade-in.visible { opacity: 1; transform: none; }
.fade-in:nth-child(2) { transition-delay: .08s; }
.fade-in:nth-child(3) { transition-delay: .16s; }
.fade-in:nth-child(4) { transition-delay: .24s; }
.fade-in:nth-child(5) { transition-delay: .32s; }
.fade-in:nth-child(6) { transition-delay: .40s; }

/* ── Info Box ── */
.info-box { display: flex; gap: .875rem; padding: 1rem 1.25rem; border-radius: var(--radius-md); background: var(--color-primary-muted); border: 1px solid rgba(12,45,90,.12); font-size: .875rem; color: var(--color-gray-700); line-height: 1.65; }
.info-box svg { color: var(--color-primary); flex-shrink: 0; margin-top: .1rem; }
.info-box.success { background: var(--color-accent-muted); border-color: rgba(0,168,107,.2); }
.info-box.success svg { color: var(--color-accent-dark); }
.info-box.warning { background: var(--color-gold-muted); border-color: rgba(232,160,32,.25); }
.info-box.warning svg { color: var(--color-gold); }

/* ── Print ── */
@media print {
  .navbar,.hero-actions,.btn,.cta-section,.footer,.calc-cta-row,.scroll-top,.modal-overlay { display: none !important; }
  body { font-size: 12px; }
}

/* ── Animations ── */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:.5; } }
@keyframes slideDown { from { opacity:0; transform:translateY(-8px); } to { opacity:1; transform:none; } }