/* ===========================
   KVIZONLINE – PREMIUM DARK THEME
   Black + Gold + Blue accent
   =========================== */

:root {
  --bg: #020617;
  --bg-soft: #020617;
  --bg-elevated: #020617;
  --bg-card: #020617;
  --bg-hero: radial-gradient(circle at top left, #facc15 0%, #0b1120 40%, #020617 100%);
  --border-subtle: rgba(148,163,184,0.4);

  --accent: #facc15;
  --accent-soft: #fbbf24;
  --accent-strong: #eab308;
  --accent-blue: #38bdf8;

  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --text-soft: #6b7280;

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --shadow-soft: 0 16px 40px rgba(0,0,0,0.6);
  --shadow-card: 0 18px 45px rgba(0,0,0,0.7);

  --transition-fast: 150ms cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition-med: 220ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ============= GLOBAL RESET ============= */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, #1f2937 0, transparent 45%),
    radial-gradient(circle at bottom, #020617 0, #020617 60%);
  background-color: #020617;
  color: var(--text-main);
}

/* typografie */

h1,h2,h3,h4,h5 {
  margin: 0 0 .35em;
  font-weight: 700;
  color: var(--text-main);
}

p {
  margin: 0 0 .6em;
  color: var(--text-main);
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}
a:hover {
  color: #7dd3fc;
}

/* ================= LAYOUT ================= */

.page-wrapper,
.container,
.layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

/* základní karty (pro kdeco) */

.card {
  background: radial-gradient(circle at top left, #020617 0%, #020617 55%, #020617 100%);
  border-radius: var(--radius-md);
  padding: 20px 20px 18px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

/* ================= HEADER ================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: linear-gradient(to right, rgba(2,6,23,0.96), rgba(15,23,42,0.96));
  border-bottom: 1px solid rgba(148,163,184,0.3);
}

.site-header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, #facc15 0%, #eab308 55%, #0f172a 100%);
  box-shadow: 0 10px 25px rgba(0,0,0,0.7);
}

.site-logo-text {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-main);
}

.main-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.main-nav a {
  font-size: .88rem;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--text-muted);
  border: 1px solid transparent;
}
.main-nav a:hover {
  color: var(--accent);
  border-color: rgba(250,204,21,0.4);
  background: rgba(15,23,42,0.8);
}

/* ================= HERO BLOKY ================= */

.hero-banner,
.hero-main {
  margin: 18px 0 26px;
}

.hero-banner,
.hero-main-inner {
  background: radial-gradient(circle at top left, #facc15 0%, #0f172a 45%, #020617 100%);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  box-shadow: var(--shadow-soft);
  display: flex;
  gap: 22px;
  align-items: center;
  justify-content: space-between;
  color: #fefce8;
}

.hero-content {
  max-width: 70%;
}

.hero-kicker {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 0.78rem;
  opacity: .85;
  margin-bottom: 5px;
}

.hero-title {
  font-size: 1.9rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.hero-sub {
  font-size: 0.98rem;
  opacity: .93;
}

.hero-badge {
  min-width: 180px;
  border-radius: 999px;
  padding: 10px 16px;
  background: rgba(15,23,42,0.96);
  border: 1px solid rgba(250,204,21,0.7);
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-badge-pill {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: radial-gradient(circle at 25% 0, #facc15 0%, #eab308 55%, #0f172a 100%);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 800;
  color:#020617;
}

/* ============== GRIDY / SEZNAMY ============== */

.quiz-grid,
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
  gap: 18px;
}

.quiz-card,
.test-card {
  background: radial-gradient(circle at top left,#020617 0%,#020617 60%,#020617 100%);
  border-radius: var(--radius-md);
  padding: 16px 16px 14px;
  border: 1px solid rgba(148,163,184,0.65);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.quiz-card::before,
.test-card::before {
  content:"";
  position:absolute;
  inset:-40%;
  background:
    radial-gradient(circle at 0 0, rgba(250,204,21,0.08) 0, transparent 55%),
    radial-gradient(circle at 100% 0, rgba(56,189,248,0.14) 0, transparent 60%);
  opacity:.7;
  pointer-events:none;
}

.quiz-card h2,
.quiz-card h3,
.test-card h2 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.quiz-meta {
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-size: 0.8rem;
  color: var(--text-soft);
  margin-top: 6px;
}

.badge-pill {
  border-radius: 999px;
  padding: 3px 8px;
  background: rgba(15,23,42,0.95);
  border: 1px solid rgba(148,163,184,0.7);
}

/* ============== TLAČÍTKA ============== */

.btn,
button,
input[type=submit],
input[type=button] {
  font-family: inherit;
}

.btn-primary,
button.btn-primary,
input[type=submit].btn-primary {
  display: inline-block;
  border-radius: 999px;
  padding: 9px 18px;
  background: linear-gradient(135deg,#facc15,#eab308);
  color:#111827;
  font-weight:600;
  font-size:0.95rem;
  border:none;
  cursor:pointer;
  box-shadow:0 12px 30px rgba(250,204,21,0.45);
  transition: transform var(--transition-fast), filter var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
  filter:brightness(0.96);
  transform: translateY(-1px);
  box-shadow:0 16px 40px rgba(250,204,21,0.45);
}

.btn-secondary {
  display:inline-block;
  border-radius: 999px;
  padding: 8px 16px;
  background: rgba(15,23,42,0.96);
  border: 1px solid rgba(148,163,184,0.7);
  color: var(--text-main);
  font-size: 0.9rem;
  cursor:pointer;
}
.btn-secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* ============== FORMULÁŘE ============== */

form {
  margin: 0;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(148,163,184,0.7);
  background: rgba(15,23,42,0.9);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  outline:none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-soft);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 1px rgba(56,189,248,0.5);
}

/* přepínače/checkboxy – základně jen zarovnání */
label {
  font-size: 0.95rem;
}

/* ============== OBSAH TESTŮ / KVÍZŮ ============== */

.quiz-wrapper,
.test-wrapper {
  max-width: 760px;
  margin: 0 auto;
}

.question-block {
  margin-bottom: 18px;
  padding: 14px 14px 12px;
  border-radius: 14px;
  background: radial-gradient(circle at top left,#020617 0%,#020617 55%,#020617 100%);
  border: 1px solid rgba(148,163,184,0.6);
}

.question-block h2,
.question-block h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
}

.answer-options {
  display: grid;
  gap: 6px;
  margin-top: 6px;
}

.answer-options label {
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 8px;
  border-radius: 999px;
  background: rgba(15,23,42,0.85);
  border: 1px solid transparent;
  cursor:pointer;
  font-size: 0.9rem;
}
.answer-options input {
  width:auto;
}
.answer-options label:hover {
  border-color: rgba(250,204,21,0.6);
}

/* výsledkové boxy */

.result-box,
.result-card {
  background: radial-gradient(circle at top left,#020617 0%,#020617 55%,#020617 100%);
  border-radius: 20px;
  padding: 20px 18px 16px;
  border: 1px solid rgba(250,204,21,0.35);
  box-shadow: var(--shadow-card);
}

/* ============== FOOTER ============== */

.site-footer {
  border-top: 1px solid rgba(148,163,184,0.35);
  margin-top: 32px;
  background: radial-gradient(circle at top, #020617 0, #020617 55%, #000 100%);
}

.site-footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 16px 22px;
  font-size: 0.85rem;
  color: var(--text-soft);
  display:flex;
  justify-content: space-between;
  flex-wrap:wrap;
  gap:8px;
}

/* ============== RESPONSIVITA ============== */

@media (max-width: 800px) {
  .page-wrapper,
  .container,
  .layout {
    padding: 18px 12px 32px;
  }

  .hero-banner,
  .hero-main-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 16px;
  }

  .hero-content {
    max-width: 100%;
  }

  .site-header-inner {
    flex-wrap: wrap;
  }
}