/* =====================================================================
   Samsun Matematik Merkezi — modern theme
   Light + Dark mode, responsive, no AI-icon vibes (Lucide-style SVG).
   ===================================================================== */

:root {
  /* Brand */
  --brand-coral: #E85B4F;
  --brand-coral-strong: #D9483B;
  --brand-navy: #2A3554;
  --brand-navy-strong: #1F2740;

  /* Light theme tokens */
  --bg: #F7F7FB;
  --bg-soft: #FFFFFF;
  --bg-elev: #FFFFFF;
  --bg-alt: #EEF1F8;
  --text: #1A2238;
  --text-soft: #4B5468;
  --text-muted: #7A8298;
  --border: #E5E8F0;
  --border-strong: #D5D9E5;
  --accent: var(--brand-coral);
  --accent-soft: #FCEAE7;
  --primary: var(--brand-navy);
  --primary-soft: #E7E9F2;
  --shadow-sm: 0 1px 2px rgba(20,28,52,.06);
  --shadow-md: 0 8px 24px -8px rgba(20,28,52,.12);
  --shadow-lg: 0 24px 60px -20px rgba(20,28,52,.18);
  --ring: 0 0 0 4px rgba(232,91,79,.18);

  /* Layout */
  --container: 1200px;
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-display: 'Sora', 'Plus Jakarta Sans', system-ui, sans-serif;

  /* Motion */
  --t-fast: 120ms cubic-bezier(.4,0,.2,1);
  --t: 200ms cubic-bezier(.4,0,.2,1);
  --t-slow: 360ms cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
  --bg: #0A0E1A;
  --bg-soft: #111626;
  --bg-elev: #131A2E;
  --bg-alt: #0F1424;
  --text: #ECEEF5;
  --text-soft: #B6BCD0;
  --text-muted: #8089A0;
  --border: #1F2740;
  --border-strong: #2C3656;
  --accent: #FF6E60;
  --accent-soft: rgba(232,91,79,.14);
  --primary: #6B7AA8;
  --primary-soft: rgba(107,122,168,.16);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 12px 28px -10px rgba(0,0,0,.55);
  --shadow-lg: 0 28px 70px -22px rgba(0,0,0,.7);
  --ring: 0 0 0 4px rgba(255,110,96,.22);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--t-slow), color var(--t-slow);
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--t); }
a:hover { color: var(--accent); }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--primary); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
  z-index: 9999;
}
.skip-link:focus { left: 0; outline: none; }

/* ---------- Container ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; }
@media (max-width: 640px) { .container { padding-inline: 18px; } }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800; line-height: 1.15; letter-spacing: -0.01em;
  color: var(--text);
}
h1 { font-size: clamp(2rem, 4.4vw + 1rem, 3.6rem); }
h2 { font-size: clamp(1.6rem, 2.4vw + 1rem, 2.4rem); }
h3 { font-size: 1.2rem; line-height: 1.3; }
.lead { color: var(--text-soft); font-size: 1.05rem; max-width: 60ch; }
.muted { color: var(--text-muted); }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg-soft) 85%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background var(--t), border-color var(--t);
}
.topbar.is-scrolled {
  background: color-mix(in srgb, var(--bg-soft) 95%, transparent);
  box-shadow: var(--shadow-sm);
}
.topbar-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  min-height: 78px;
  padding-block: 12px;
}
.brand { display: inline-flex; align-items: center; }
.brand-logo {
  height: 52px; width: auto;
  transition: filter var(--t);
}
[data-theme="dark"] .brand-logo {
  filter: brightness(1.06) drop-shadow(0 0 10px rgba(232,91,79,.18));
}

.mainnav { justify-self: center; }
.nav-cta { display: none; }
.nav-list {
  list-style: none; padding: 0;
  display: flex; gap: 6px; align-items: center;
}
.nav-list a {
  display: inline-flex; align-items: center;
  padding: 10px 16px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem;
  color: var(--text-soft);
  transition: color var(--t), background var(--t);
}
.nav-list a:hover { color: var(--text); background: var(--bg-alt); }
.nav-list a.is-active {
  color: var(--accent);
  background: var(--accent-soft);
}

.topbar-actions {
  display: inline-flex; align-items: center; gap: 8px;
}

.theme-toggle {
  width: 42px; height: 42px;
  display: inline-grid; place-items: center;
  border-radius: 999px;
  background: var(--bg-alt);
  color: var(--text-soft);
  border: 1px solid var(--border);
  position: relative;
  transition: color var(--t), background var(--t), border-color var(--t);
}
.theme-toggle:hover { color: var(--accent); border-color: var(--border-strong); }
.theme-icon { position: absolute; display: inline-grid; place-items: center; transition: opacity var(--t), transform var(--t-slow); }
.theme-icon-dark { opacity: 0; transform: rotate(-90deg) scale(.6); }
[data-theme="dark"] .theme-icon-light { opacity: 0; transform: rotate(90deg) scale(.6); }
[data-theme="dark"] .theme-icon-dark { opacity: 1; transform: rotate(0) scale(1); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
  position: relative;
}
.nav-toggle-icon { position: absolute; inset: 0; display: grid; place-items: center; transition: opacity var(--t); }
.nav-toggle-icon-close { opacity: 0; }
.is-menu-open .nav-toggle-icon-open { opacity: 0; }
.is-menu-open .nav-toggle-icon-close { opacity: 1; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px;
  font-weight: 700; font-size: 0.95rem; line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--t), background var(--t), color var(--t), border-color var(--t), box-shadow var(--t);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }

.btn-sm  { padding: 9px 16px; font-size: 0.88rem; }
.btn-lg  { padding: 16px 28px; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px -8px rgba(232,91,79,.55);
}
.btn-primary:hover { background: var(--brand-coral-strong); color: #fff; box-shadow: 0 12px 24px -10px rgba(232,91,79,.7); }

.btn-dark {
  background: var(--brand-navy); color: #fff;
}
[data-theme="dark"] .btn-dark { background: #1f2740; }
.btn-dark:hover { background: var(--brand-navy-strong); color: #fff; }

.btn-ghost {
  background: transparent; color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: var(--bg-alt); color: var(--text); border-color: var(--text-muted); }

.btn-light {
  background: rgba(255,255,255,.14); color: #fff;
  border-color: rgba(255,255,255,.22);
  backdrop-filter: blur(8px);
}
.btn-light:hover { background: rgba(255,255,255,.22); color: #fff; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 72px 0 96px;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: '';
  position: absolute; inset: -10% -10% auto -10%;
  height: 70%;
  background:
    radial-gradient(60% 80% at 80% 20%, color-mix(in srgb, var(--accent) 40%, transparent), transparent 60%),
    radial-gradient(70% 80% at 0% 100%, color-mix(in srgb, var(--primary) 35%, transparent), transparent 60%);
  filter: blur(60px) saturate(120%);
  opacity: .55;
  z-index: -1;
}
[data-theme="dark"] .hero::before { opacity: .55; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
  font-size: .82rem; font-weight: 700; letter-spacing: .02em;
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}
.hero h1 { margin-top: 18px; }
.hero h1 .hl {
  background: linear-gradient(120deg, var(--accent), #FF9A6B 60%, var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { margin-top: 18px; font-size: 1.1rem; }
.hero-actions {
  margin-top: 32px;
  display: flex; flex-wrap: wrap; gap: 12px;
}

.hero-stats {
  margin-top: 48px;
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.stat-num {
  font-family: var(--font-display);
  font-weight: 800; font-size: 1.85rem; color: var(--text);
}
.stat-label { color: var(--text-muted); font-size: .9rem; margin-top: 2px; }

/* Hero art */
.hero-art {
  position: relative;
  aspect-ratio: 1/1;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--brand-navy), color-mix(in srgb, var(--brand-navy) 70%, var(--accent)));
  display: grid; place-items: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.hero-art::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(45% 60% at 30% 20%, rgba(255,255,255,.18), transparent 60%),
    radial-gradient(55% 70% at 75% 80%, rgba(232,91,79,.45), transparent 60%);
}
.hero-art-grid {
  position: relative;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
  width: 78%;
}
.art-tile {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(10px);
  display: flex; flex-direction: column; gap: 6px;
}
.art-tile.lg { grid-column: span 2; }
.art-num {
  font-family: var(--font-display);
  font-weight: 800; font-size: 1.6rem;
}
.art-num small { font-size: .9rem; opacity: .8; }
.art-tile span { color: rgba(255,255,255,.78); font-size: .82rem; }
.art-formula {
  position: absolute;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 5rem;
  font-weight: 800;
  color: rgba(255,255,255,.06);
  pointer-events: none;
}
.art-formula-1 { top: 6%; left: 6%; }
.art-formula-2 { bottom: 6%; right: 6%; font-size: 4rem; }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark {
  background: var(--brand-navy);
  color: #fff;
}
[data-theme="dark"] .section-dark { background: #0d1326; }
.section-dark h1, .section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .lead, .section-dark p { color: rgba(255,255,255,.78); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
  font-size: .78rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  margin-bottom: 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
}
.section-head h2 { margin-bottom: 14px; }
.section-head .lead { margin-inline: auto; }

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.feature-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
  display: flex; flex-direction: column; gap: 12px;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  box-shadow: var(--shadow-md);
}
.feature-icon {
  width: 52px; height: 52px;
  border-radius: 16px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}
.feature-card h3 { margin-bottom: 4px; }
.feature-card p { color: var(--text-soft); }

/* ---------- Tabs (champions) ---------- */
.tabs {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  margin-top: 22px;
}
.tab {
  padding: 8px 16px; border-radius: 999px;
  background: var(--bg-soft); border: 1px solid var(--border);
  color: var(--text-soft); font-size: .85rem; font-weight: 600;
  cursor: default;
}
.tab.is-active {
  background: var(--primary); color: #fff; border-color: transparent;
}
[data-theme="dark"] .tab.is-active { background: var(--accent); }

/* ---------- Marquee ---------- */
.marquee {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.marquee-track {
  display: flex; gap: 16px;
  width: max-content;
  animation: marquee 36s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.medal-card {
  flex: 0 0 240px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
  transition: transform var(--t), border-color var(--t);
}
.medal-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.medal-card .medal-tag {
  font-size: .68rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent); font-weight: 700;
}
.medal-avatar {
  width: 64px; height: 64px;
  margin: 14px auto 12px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--brand-navy));
  color: #fff; font-weight: 800; font-size: 1.5rem;
  font-family: var(--font-display);
}
.medal-card h3 { font-size: 1rem; }
.medal-card .medal-prize {
  margin-top: 8px; display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent); font-weight: 700; font-size: .85rem;
}

.comp-card {
  flex: 0 0 200px;
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--t), transform var(--t);
}
.comp-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.comp-logo {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary);
  font-family: var(--font-display); font-weight: 800; font-size: .72rem;
  flex-shrink: 0;
}
[data-theme="dark"] .comp-logo { background: var(--accent-soft); color: var(--accent); }
.comp-card strong { font-size: .92rem; }
.comp-card span { color: var(--text-muted); font-size: .75rem; }

/* ---------- Packages ---------- */
.packages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.package-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 28px 30px;
  position: relative;
  display: flex; flex-direction: column;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.package-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  box-shadow: var(--shadow-md);
}
.package-card.is-featured {
  border-color: var(--accent);
  box-shadow: 0 24px 48px -22px color-mix(in srgb, var(--accent) 50%, transparent);
}
.package-card.is-featured::before {
  content: 'En Çok Tercih Edilen';
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff;
  padding: 5px 14px; border-radius: 999px;
  font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  white-space: nowrap;
}
.pack-grade {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary);
  font-size: .78rem; font-weight: 700; letter-spacing: .03em;
  margin-bottom: 14px; align-self: flex-start;
}
[data-theme="dark"] .pack-grade { background: var(--accent-soft); color: var(--accent); }
.package-card h3 { font-size: 1.15rem; min-height: 2.5em; margin-bottom: 18px; }
.pack-price {
  display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px;
}
.pack-price .price {
  font-family: var(--font-display);
  font-size: 2.1rem; font-weight: 800; color: var(--text);
}
.pack-price .old {
  color: var(--text-muted);
  text-decoration: line-through;
  font-weight: 600;
}
.pack-duration { color: var(--text-muted); font-size: .9rem; margin-bottom: 22px; }
.feature-list {
  list-style: none; padding: 0; margin: 0 0 26px;
  display: flex; flex-direction: column; gap: 10px;
  flex: 1;
}
.feature-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .94rem; color: var(--text-soft);
}
.feature-list .icon {
  flex-shrink: 0;
  color: var(--accent);
  margin-top: 3px;
}

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-full { max-width: none; }
.faq-item {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--t), box-shadow var(--t);
}
.faq-item[open] { border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.faq-item summary {
  list-style: none; cursor: pointer;
  padding: 18px 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  font-weight: 700; color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-toggle {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 999px;
  background: var(--bg-alt); color: var(--text-soft);
  flex-shrink: 0;
  transition: transform var(--t), background var(--t), color var(--t);
}
.faq-item[open] .faq-toggle {
  background: var(--accent); color: #fff;
  transform: rotate(45deg);
}
.faq-body { padding: 0 22px 22px; color: var(--text-soft); }

/* ---------- Page hero ---------- */
.page-hero {
  position: relative;
  padding: 80px 0 60px;
  text-align: center;
  background:
    radial-gradient(70% 80% at 50% 0%, var(--accent-soft), transparent 70%),
    var(--bg);
}
.page-hero .eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px;
  background: var(--bg-soft); border: 1px solid var(--border);
  color: var(--accent); font-weight: 700; font-size: .82rem;
  letter-spacing: .03em;
}
.page-hero h1 { margin: 18px auto 14px; max-width: 760px; }
.page-hero p { color: var(--text-soft); max-width: 640px; margin: 0 auto; }
.breadcrumb {
  margin-top: 22px; font-size: .88rem; color: var(--text-muted);
  display: inline-flex; gap: 6px; align-items: center;
}
.breadcrumb a:hover { color: var(--accent); }

/* ---------- Forms ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
}
.form-card, .contact-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-card h2 { margin-bottom: 6px; }
.form-card .muted { margin-bottom: 24px; }

.form { display: flex; flex-direction: column; gap: 18px; }
.form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.field label {
  display: block; font-weight: 600; font-size: .88rem;
  color: var(--text-soft); margin-bottom: 8px;
}
.field input, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--ring);
  background: var(--bg-soft);
}
.field textarea { min-height: 140px; resize: vertical; }

.contact-card h2 { margin-bottom: 22px; }
.contact-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 18px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; }
.contact-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center;
  flex-shrink: 0;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}
.contact-list strong { font-size: .9rem; color: var(--text); }
.contact-list a, .contact-list span { color: var(--text-soft); }

.flash {
  padding: 14px 18px; border-radius: 12px; margin-bottom: 16px;
  font-weight: 600; font-size: .94rem;
  border: 1px solid;
}
.flash-success { background: #E5F4ED; color: #15724B; border-color: #BCE3CF; }
.flash-error   { background: #FCE7E5; color: #9A2A22; border-color: #F2BCB5; }
[data-theme="dark"] .flash-success { background: rgba(38,160,110,.14); color: #61D7A4; border-color: rgba(38,160,110,.32); }
[data-theme="dark"] .flash-error   { background: rgba(232,91,79,.14); color: #FF8E80; border-color: rgba(232,91,79,.32); }

/* ---------- Empty state ---------- */
.empty {
  text-align: center; padding: 64px 24px;
  background: var(--bg-soft); border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-soft);
}
.empty .empty-icon {
  width: 64px; height: 64px; border-radius: 50%;
  margin: 0 auto 18px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--brand-navy);
  color: rgba(255,255,255,.78);
  padding-top: 72px;
  margin-top: 64px;
}
[data-theme="dark"] .site-footer { background: #0a0e1c; border-top: 1px solid var(--border); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 56px;
}
.foot-brand p { color: rgba(255,255,255,.7); margin-top: 14px; max-width: 36ch; }
.foot-brand .brand-logo { filter: brightness(0) invert(1); margin-bottom: 8px; }
.foot-meta {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 14px; font-size: .88rem;
}
.site-footer h4 {
  color: #fff; font-size: 1rem; font-weight: 700;
  margin-bottom: 18px;
}
.foot-links { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.foot-links a { color: rgba(255,255,255,.7); font-size: .92rem; }
.foot-links a:hover { color: #fff; }
.foot-contact li { display: inline-flex; align-items: center; gap: 8px; color: rgba(255,255,255,.7); font-size: .92rem; }
.foot-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-block: 22px; }
.foot-bottom-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .85rem; color: rgba(255,255,255,.55); }

/* ---------- WhatsApp FAB ---------- */
.wa-fab {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 12px 28px -10px rgba(37,211,102,.6);
  transition: transform var(--t), box-shadow var(--t);
}
.wa-fab:hover { transform: translateY(-2px) scale(1.04); color: #fff; box-shadow: 0 16px 32px -10px rgba(37,211,102,.7); }

/* ---------- Reveal anim ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { max-width: 480px; margin-top: 24px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .packages { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .topbar-inner { grid-template-columns: 1fr auto; min-height: 68px; }
  .brand-logo { height: 42px; }
  .mainnav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 55%;
    min-width: 280px;
    max-width: 420px;
    height: 100vh;
    background-color: var(--bg-soft);
    padding: 88px 24px 32px;
    border-left: 1px solid var(--border);
    box-shadow: -24px 0 60px -12px rgba(20,28,52,.22);
    overflow-y: auto;
    z-index: 110;
    transform: translateX(100%);
    pointer-events: none;
    transition: transform var(--t-slow);
  }
  .is-menu-open .mainnav {
    transform: translateX(0);
    pointer-events: auto;
  }
  .mainnav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15,20,36,.45);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t), visibility 0s linear var(--t);
  }
  .is-menu-open .mainnav-backdrop {
    opacity: 1;
    visibility: visible;
    transition: opacity var(--t), visibility 0s;
  }
  body.is-menu-open { overflow: hidden; }
  .nav-toggle { position: relative; z-index: 120; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 6px; }
  .nav-list a {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    border-radius: 14px;
    justify-content: center;
    text-align: center;
  }
  .nav-cta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
  }
  .nav-cta .btn {
    width: 100%;
    justify-content: center;
    padding-block: 14px;
  }
  .topbar-actions .btn-sm { display: none; }
  .nav-toggle { display: inline-grid; place-items: center; }

  .section { padding: 64px 0; }
  .section-head { margin-bottom: 40px; }
  .hero { padding: 56px 0 72px; }
  .feature-grid, .packages { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .form-card, .contact-card { padding: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 36px; }
  .foot-bottom-inner { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .pack-price .price { font-size: 1.7rem; }
  .wa-fab { right: 14px; bottom: 14px; }
}

/* =====================================================================
   Öğrenci paneli + admin (subdomain)
   ===================================================================== */

/* ---------- Auth pages (login / register) ---------- */
.auth-wrap {
  min-height: 100vh;
  display: grid; place-items: center;
  padding: 32px 16px;
  background:
    radial-gradient(60% 80% at 80% 0%, var(--accent-soft), transparent 60%),
    radial-gradient(60% 80% at 0% 100%, var(--primary-soft), transparent 60%),
    var(--bg);
}
.auth-card {
  width: 100%; max-width: 460px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-md);
}
.auth-card .brand {
  display: flex;
  justify-content: center;
  margin-bottom: 26px;
}
.auth-card .brand-logo {
  height: 96px;
  width: auto;
  max-width: 100%;
}
@media (max-width: 540px) {
  .auth-card .brand-logo { height: 80px; }
}
.auth-tabs {
  display: flex; gap: 4px;
  background: var(--bg-alt);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 24px;
}
.auth-tabs a {
  flex: 1;
  padding: 10px 14px;
  border-radius: 9px;
  text-align: center;
  font-weight: 600; font-size: .92rem;
  color: var(--text-soft);
  transition: background var(--t), color var(--t);
}
.auth-tabs a.is-active {
  background: var(--bg-soft);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
.auth-card h1 {
  font-size: 1.55rem; line-height: 1.2;
  margin-bottom: 6px;
}
.auth-card .muted { color: var(--text-muted); margin-bottom: 22px; font-size: .95rem; }
.auth-card .form { display: flex; flex-direction: column; gap: 16px; }
.auth-card label,
.auth-card .form label {
  display: block;
  font-size: .85rem; font-weight: 600;
  color: var(--text-soft); margin-bottom: 6px;
}
.auth-card input,
.auth-card select,
.auth-card textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--t), box-shadow var(--t);
}
.auth-card input:focus,
.auth-card select:focus,
.auth-card textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--ring);
}
.auth-card .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 540px) {
  .auth-card { padding: 28px 22px; }
  .auth-card .row { grid-template-columns: 1fr; }
}

/* ---------- Panel layout (sidebar) ---------- */
.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}
.app-side {
  background: var(--brand-navy);
  color: rgba(255,255,255,.82);
  padding: 26px 20px;
  display: flex; flex-direction: column;
  position: sticky; top: 0; max-height: 100vh; overflow-y: auto;
}
[data-theme="dark"] .app-side { background: #0c1226; border-right: 1px solid var(--border); }
.app-side .brand,
.app-side .brand-light {
  display: inline-flex; align-items: center; gap: 12px;
  margin-bottom: 26px;
  color: #fff;
}
.brand-mark {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--accent);
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-weight: 800; font-size: 1.2rem;
  color: #fff;
  flex-shrink: 0;
}
.brand-text {
  display: flex; flex-direction: column; line-height: 1.2;
}
.brand-text strong { color: #fff; font-weight: 800; font-size: 1.02rem; letter-spacing: .01em; }
.brand-text em { font-style: normal; color: rgba(255,255,255,.65); font-size: .85rem; }
.side-nav {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 4px;
}
.side-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border-radius: 10px;
  font-weight: 500; font-size: .94rem;
  color: rgba(255,255,255,.78);
  transition: background var(--t), color var(--t);
}
.side-nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.side-nav a.is-active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.side-foot {
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: .85rem;
}
.side-foot p { color: rgba(255,255,255,.78); margin-bottom: 8px; line-height: 1.5; }
.side-foot a { color: var(--accent); }
.app-main {
  background: var(--bg);
  padding: 32px;
  overflow-x: hidden;
}
.app-main h1, .app-main h2 { color: var(--text); margin-bottom: 14px; }
.app-main .card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .app-side {
    position: relative; top: auto; max-height: none;
    padding: 18px 20px;
  }
  .app-side .brand { margin-bottom: 14px; }
  .side-nav { flex-direction: row; flex-wrap: wrap; }
  .side-nav a { padding: 8px 12px; font-size: .88rem; }
  .side-foot { display: none; }
  .app-main { padding: 24px 18px; }
}

/* ---------- Legacy class aliases (samsunmat dönemi) ---------- */
.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px -8px rgba(232,91,79,.55);
}
.btn.primary:hover { background: var(--brand-coral-strong); color: #fff; }
.btn.accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px -8px rgba(232,91,79,.55);
}
.btn.accent:hover { background: var(--brand-coral-strong); color: #fff; }
.btn.ghost {
  background: transparent; color: var(--text);
  border-color: var(--border-strong);
}
.btn.ghost:hover { background: var(--bg-alt); color: var(--text); }
.btn.block { width: 100%; justify-content: center; }
.btn.lg    { padding: 16px 28px; font-size: 1rem; }
.btn.sm    { padding: 9px 16px; font-size: .88rem; }

/* ---------- Utility classes ---------- */
.muted-small { color: var(--text-muted); font-size: .85rem; }
.center      { text-align: center; }
.mt-1        { margin-top: 8px; }
.mt-2        { margin-top: 16px; }
.mt-3        { margin-top: 24px; }
.mb-1        { margin-bottom: 8px; }
.mb-2        { margin-bottom: 16px; }

/* ---------- Generic form (panel) ---------- */
.app-main .form,
.app-main form.form {
  display: flex; flex-direction: column; gap: 16px;
}
.app-main .form label,
.app-main form label {
  display: block;
  font-size: .85rem; font-weight: 600;
  color: var(--text-soft); margin-bottom: 6px;
}
.app-main .form input,
.app-main .form textarea,
.app-main .form select,
.app-main form input:not([type="hidden"]),
.app-main form textarea,
.app-main form select {
  width: 100%;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text);
  transition: border-color var(--t), box-shadow var(--t);
}
.app-main .form input:focus,
.app-main .form textarea:focus,
.app-main .form select:focus,
.app-main form input:focus,
.app-main form textarea:focus,
.app-main form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--ring);
}
.app-main .form .row,
.app-main form .row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
@media (max-width: 640px) {
  .app-main .form .row,
  .app-main form .row { grid-template-columns: 1fr; }
}

/* ---------- Panel head (page title + actions) ---------- */
.app-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}
.app-head h1 {
  font-size: clamp(1.4rem, 1.8vw + 1rem, 1.85rem);
  line-height: 1.2;
  margin: 0;
}
.app-head .muted { margin-top: 6px; }
.app-head > div:first-child { flex: 1 1 auto; min-width: 0; }

/* ---------- Card ---------- */
.app-main .card,
.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}
.app-main .card h2,
.card h2 {
  font-size: 1.15rem;
  margin-bottom: 16px;
  color: var(--text);
}
.app-main .card h3,
.card h3 { font-size: 1rem; }

/* ---------- KPI grid ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 22px;
}
.kpi {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex; flex-direction: column; gap: 6px;
  position: relative;
  overflow: hidden;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.kpi::before {
  content: '';
  position: absolute; inset: auto -30% -60% auto;
  width: 140px; height: 140px;
  background: radial-gradient(circle, var(--accent-soft), transparent 70%);
  pointer-events: none;
}
.kpi:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--border));
  box-shadow: var(--shadow-md);
}
.kpi h4 {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin: 0;
}
.kpi .num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.9rem;
  color: var(--text);
  line-height: 1.1;
}

/* ---------- Tables (generic) ---------- */
.table,
.app-main table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table th, .table td,
.app-main table th, .app-main table td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: .92rem;
  vertical-align: middle;
}
.table th,
.app-main table th {
  background: var(--bg-alt);
  font-weight: 700; font-size: .76rem;
  text-transform: uppercase; letter-spacing: .05em;
  color: var(--text-soft);
}
.table tr:last-child td,
.app-main table tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td,
.app-main table tbody tr:hover td { background: var(--bg-alt); }
.app-main .card .table { border: 0; border-radius: 0; }
.app-main .card .table th { background: transparent; border-bottom: 1px solid var(--border); }

@media (max-width: 720px) {
  .table, .app-main table { display: block; overflow-x: auto; }
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
  border: 1px solid transparent;
}
.badge.green  { background: #E5F4ED; color: #15724B; border-color: #BCE3CF; }
.badge.yellow { background: #FFF4D6; color: #8A5A00; border-color: #FAE2A1; }
.badge.red    { background: #FCE7E5; color: #9A2A22; border-color: #F2BCB5; }
.badge.gray   { background: var(--bg-alt); color: var(--text-soft); border-color: var(--border); }
[data-theme="dark"] .badge.green  { background: rgba(38,160,110,.16); color: #61D7A4; border-color: rgba(38,160,110,.32); }
[data-theme="dark"] .badge.yellow { background: rgba(245,180,40,.16); color: #FFD27A; border-color: rgba(245,180,40,.32); }
[data-theme="dark"] .badge.red    { background: rgba(232,91,79,.16); color: #FF8E80; border-color: rgba(232,91,79,.32); }

/* ---------- Empty state (.ico alias) ---------- */
.empty .ico {
  width: 64px; height: 64px; border-radius: 50%;
  margin: 0 auto 16px;
  display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent);
  font-size: 1.6rem;
}
.empty p { margin: 0; }

/* ---------- Layout helpers ---------- */
.gap-md {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.gap-lg {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

/* ---------- Panel responsive tweaks ---------- */
@media (max-width: 1100px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .stat-grid { grid-template-columns: 1fr; }
  .app-head { gap: 12px; }
  .app-head h1 { font-size: 1.5rem; }
  .app-main .card,
  .card { padding: 18px; }
}