/* ═══════════════════════════════════════════════════════
   CRYPTO AKADEMIE — Design System
   Mobile-First, Premium-Feel
   ═══════════════════════════════════════════════════════ */

:root {
  --bg-0: #07080c;
  --bg-1: #0d1018;
  --bg-2: #141823;
  --bg-3: #1c2030;
  --bg-elevated: #1f2435;
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);

  --text: #e8ebf2;
  --text-mid: #9aa3b8;
  --text-dim: #5a6175;

  --mint: #10d39d;
  --mint-soft: rgba(16, 211, 157, 0.12);
  --red: #ff5876;
  --red-soft: rgba(255, 88, 118, 0.12);
  --amber: #ffb547;
  --amber-soft: rgba(255, 181, 71, 0.12);
  --violet: #8b7cff;
  --violet-soft: rgba(139, 124, 255, 0.14);
  --gold: #f5c451;

  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 20px;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(139, 124, 255, 0.08), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(16, 211, 157, 0.06), transparent 55%),
    var(--bg-0);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
}

.mono, code { font-family: 'JetBrains Mono', ui-monospace, monospace; font-variant-numeric: tabular-nums; }

a { color: var(--mint); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ───── Navbar ───── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 16, 24, 0.85);
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-brand {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--mint), #5be0c4);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.navbar-links {
  display: flex;
  gap: 24px;
  align-items: center;
}
.navbar-links a {
  color: var(--text-mid);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s;
}
.navbar-links a:hover { color: var(--text); }
.navbar-links a.active { color: var(--mint); }
.navbar-mobile-toggle { display: none; background: none; border: none; color: var(--text); font-size: 22px; cursor: pointer; }

/* ───── Container ───── */
.container { max-width: 1200px; margin: 0 auto; padding: 24px; }
.container-narrow { max-width: 720px; margin: 0 auto; padding: 24px; }

/* ───── Typography ───── */
h1, h2, h3, h4 { letter-spacing: -0.02em; line-height: 1.2; }
h1 { font-size: clamp(28px, 5vw, 44px); font-weight: 800; }
h2 { font-size: clamp(22px, 3.5vw, 30px); font-weight: 700; }
h3 { font-size: 18px; font-weight: 600; }
.subtitle { color: var(--text-mid); font-size: 16px; line-height: 1.6; }
.eyebrow { font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mint); }

/* ───── Buttons ───── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.18s ease, background 0.18s ease;
  text-decoration: none;
  min-height: 44px;
  letter-spacing: -0.005em;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
  background: linear-gradient(180deg, #14e5ac, #0db98c);
  color: #00120c;
  box-shadow: 0 4px 16px rgba(16, 211, 157, 0.28);
}
.btn-primary:hover { box-shadow: 0 6px 22px rgba(16, 211, 157, 0.4); }
.btn-secondary { background: var(--bg-2); color: var(--text); border: 1px solid var(--border-strong); }
.btn-secondary:hover { background: var(--bg-3); }
.btn-ghost { background: transparent; color: var(--text-mid); }
.btn-ghost:hover { color: var(--text); background: rgba(255,255,255,0.04); }
.btn-violet { background: var(--violet-soft); color: var(--violet); border: 1px solid rgba(139,124,255,0.28); }
.btn-lg { padding: 16px 28px; font-size: 16px; min-height: 52px; }
.btn-sm { padding: 8px 14px; font-size: 13px; min-height: 36px; }
.btn-block { display: flex; width: 100%; }

/* ───── Inputs ───── */
.input, input[type=text], input[type=email], input[type=password], input[type=number], textarea, select {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  outline: none;
  transition: border 0.18s, box-shadow 0.18s;
}
.input:focus, input:focus, textarea:focus, select:focus {
  border-color: var(--mint);
  box-shadow: 0 0 0 3px rgba(16, 211, 157, 0.15);
}
label.input-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-mid);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}
.input-error { color: var(--red); font-size: 13px; margin-top: 6px; }

/* ───── Cards ───── */
.card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.card-violet { border-color: rgba(139, 124, 255, 0.25); background: linear-gradient(180deg, rgba(139, 124, 255, 0.05), var(--bg-1)); }
.card-mint { border-color: rgba(16, 211, 157, 0.25); background: linear-gradient(180deg, rgba(16, 211, 157, 0.05), var(--bg-1)); }

/* ───── Badges ───── */
.badge { display: inline-flex; align-items: center; padding: 4px 10px; border-radius: 999px; font-size: 11px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.badge-mint { background: var(--mint-soft); color: var(--mint); }
.badge-violet { background: var(--violet-soft); color: var(--violet); }
.badge-amber { background: var(--amber-soft); color: var(--amber); }
.badge-red { background: var(--red-soft); color: var(--red); }

/* ───── Hero ───── */
.hero { padding: 80px 24px 60px; text-align: center; }
.hero h1 { margin-bottom: 20px; max-width: 800px; margin-left: auto; margin-right: auto; }
.hero .subtitle { max-width: 680px; margin: 0 auto 32px; font-size: 18px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 24px; }
.hero-trust { color: var(--text-dim); font-size: 13px; }
.hero-gradient-text {
  background: linear-gradient(135deg, var(--mint), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ───── Sections ───── */
.section { padding: 64px 24px; }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-header h2 { margin-bottom: 12px; }

/* ───── Feature Grid ───── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature-card { padding: 28px 24px; }
.feature-icon { font-size: 32px; margin-bottom: 12px; }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { color: var(--text-mid); font-size: 14px; line-height: 1.6; }

/* ───── Pricing ───── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}
.pricing-card { position: relative; padding: 32px 24px; display: flex; flex-direction: column; }
.pricing-card.featured { border-color: var(--mint); box-shadow: 0 0 0 2px var(--mint-soft), var(--shadow-sm); transform: scale(1.02); }
.pricing-featured-badge { position: absolute; top: -10px; left: 50%; transform: translateX(-50%); background: var(--mint); color: #00120c; padding: 4px 14px; border-radius: 999px; font-size: 11px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.pricing-name { font-size: 14px; font-weight: 600; color: var(--text-mid); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
.pricing-price { font-size: 40px; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 4px; }
.pricing-price .currency { font-size: 24px; }
.pricing-price .period { font-size: 14px; color: var(--text-mid); font-weight: 400; }
.pricing-desc { color: var(--text-mid); font-size: 14px; margin-bottom: 24px; min-height: 42px; }
.pricing-features { list-style: none; padding: 0; margin: 0 0 24px; }
.pricing-features li { padding: 8px 0; color: var(--text-mid); font-size: 14px; display: flex; align-items: start; gap: 10px; }
.pricing-features li::before { content: "✓"; color: var(--mint); font-weight: 700; flex-shrink: 0; }
.pricing-features li.disabled { opacity: 0.4; }
.pricing-features li.disabled::before { content: "—"; color: var(--text-dim); }

/* ───── Auth ───── */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card { width: 100%; max-width: 420px; padding: 36px 32px; }
.auth-card h1 { font-size: 28px; margin-bottom: 8px; }
.auth-card .subtitle { font-size: 15px; margin-bottom: 28px; }
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-switch { text-align: center; color: var(--text-mid); font-size: 14px; margin-top: 20px; }
.auth-switch a { color: var(--mint); font-weight: 600; }

/* ───── Dashboard ───── */
.dashboard-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; margin-bottom: 32px; }
.dashboard-header h1 { font-size: 28px; }
.dashboard-greeting { color: var(--text-mid); font-size: 15px; margin-top: 4px; }

.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { padding: 20px 22px; }
.stat-card .stat-label { font-size: 11px; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.stat-card .stat-value { font-family: 'JetBrains Mono', monospace; font-size: 28px; font-weight: 700; margin-top: 6px; letter-spacing: -0.02em; }
.stat-card .stat-meta { font-size: 12px; color: var(--text-mid); margin-top: 4px; }
.stat-value.mint { color: var(--mint); }
.stat-value.violet { color: var(--violet); }
.stat-value.amber { color: var(--amber); }

/* ───── Roadmap / Modul-Cards ───── */
.roadmap { display: flex; flex-direction: column; gap: 20px; }
.module-card { padding: 24px; transition: border-color 0.18s; cursor: pointer; }
.module-card:hover { border-color: var(--border-strong); }
.module-card-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.module-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 24px; flex-shrink: 0; }
.module-card-header .text { flex: 1; }
.module-card-header h3 { font-size: 18px; font-weight: 700; margin-bottom: 2px; }
.module-card-header .module-sub { color: var(--text-mid); font-size: 13px; }
.module-progress-bar { height: 6px; background: var(--bg-3); border-radius: 999px; overflow: hidden; margin-bottom: 12px; }
.module-progress-fill { height: 100%; background: linear-gradient(90deg, var(--mint), #5be0c4); border-radius: 999px; transition: width 0.5s; }
.lesson-list { display: flex; flex-direction: column; gap: 6px; }
.lesson-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: all 0.15s;
}
.lesson-item:hover { background: var(--bg-3); border-color: var(--border-strong); text-decoration: none; }
.lesson-item .status-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--bg-3); border: 1.5px solid var(--text-dim); flex-shrink: 0; }
.lesson-item.completed .status-dot { background: var(--mint); border-color: var(--mint); }
.lesson-item.in-progress .status-dot { background: var(--amber); border-color: var(--amber); }
.lesson-item .lesson-title { flex: 1; font-weight: 500; }
.lesson-item .lesson-meta { color: var(--text-dim); font-size: 12px; }

/* ───── Lesson Player ───── */
.lesson-container { max-width: 760px; margin: 0 auto; padding: 24px; }
.lesson-meta-top { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.lesson-back { color: var(--text-mid); font-size: 14px; }
.lesson-title { font-size: 32px; font-weight: 800; margin-bottom: 8px; letter-spacing: -0.025em; line-height: 1.15; }
.lesson-subtitle { color: var(--text-mid); font-size: 17px; margin-bottom: 32px; }
.lesson-block { margin-bottom: 28px; }
.lesson-block h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.015em; }
.lesson-block p { color: var(--text); font-size: 16px; line-height: 1.75; margin-bottom: 14px; }
.lesson-block p:last-child { margin-bottom: 0; }
.lesson-block strong { color: var(--text); font-weight: 700; }
.lesson-block em { color: var(--text-mid); }

.lesson-callout {
  padding: 18px 22px;
  border-radius: var(--radius);
  border-left: 4px solid var(--mint);
  background: var(--mint-soft);
  margin: 24px 0;
}
.lesson-callout.warn { border-left-color: var(--amber); background: var(--amber-soft); }
.lesson-callout.tip { border-left-color: var(--violet); background: var(--violet-soft); }
.lesson-callout h4 { margin-bottom: 8px; font-size: 15px; }

.lesson-exercise {
  background: var(--bg-1);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 22px;
  margin: 24px 0;
}
.lesson-exercise h3 { color: var(--mint); margin-bottom: 12px; }
.lesson-exercise ol { padding-left: 24px; }
.lesson-exercise ol li { padding: 6px 0; color: var(--text); line-height: 1.6; }

.lesson-quiz {
  background: var(--bg-1);
  border: 1px solid var(--violet);
  border-radius: var(--radius);
  padding: 22px;
  margin: 24px 0;
}
.lesson-quiz h3 { margin-bottom: 16px; color: var(--violet); }
.lesson-quiz .quiz-question { font-size: 16px; font-weight: 600; margin-bottom: 14px; }
.lesson-quiz-options { display: flex; flex-direction: column; gap: 8px; }
.lesson-quiz-option {
  padding: 14px 18px;
  background: var(--bg-2);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-size: 15px;
  transition: all 0.15s;
}
.lesson-quiz-option:hover { border-color: var(--border-strong); background: var(--bg-3); }
.lesson-quiz-option.correct { border-color: var(--mint); background: var(--mint-soft); color: var(--mint); }
.lesson-quiz-option.wrong { border-color: var(--red); background: var(--red-soft); color: var(--red); }

.lesson-complete-section { text-align: center; padding: 32px 0; border-top: 1px solid var(--border); margin-top: 40px; }

/* ───── Trade Journal ───── */
.journal-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 28px; }
.journal-list { display: flex; flex-direction: column; gap: 12px; }
.trade-card { padding: 18px; display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.trade-symbol { font-size: 18px; font-weight: 700; min-width: 100px; font-family: 'JetBrains Mono', monospace; }
.trade-side { padding: 4px 10px; border-radius: 6px; font-size: 11px; font-weight: 700; }
.trade-side.long { background: var(--mint-soft); color: var(--mint); }
.trade-side.short { background: var(--red-soft); color: var(--red); }
.trade-info { flex: 1; display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 12px; font-size: 13px; }
.trade-info-label { color: var(--text-dim); font-size: 10px; text-transform: uppercase; letter-spacing: 0.06em; }
.trade-info-value { font-family: 'JetBrains Mono', monospace; font-weight: 600; }
.trade-pnl { font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 16px; }
.trade-pnl.profit { color: var(--mint); }
.trade-pnl.loss { color: var(--red); }

/* ───── Empty States ───── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-dim); }
.empty-state .icon { font-size: 56px; margin-bottom: 16px; opacity: 0.5; }

/* ───── Toast ───── */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast { background: var(--bg-2); border-left: 4px solid var(--mint); padding: 14px 18px; border-radius: 10px; box-shadow: var(--shadow); color: var(--text); font-size: 14px; animation: toastIn 0.25s ease-out; }
.toast.error { border-color: var(--red); }
.toast.warn { border-color: var(--amber); }
@keyframes toastIn { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ───── Scrollbars ───── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #2a2f42; }

/* ───── Mobile ───── */
@media (max-width: 768px) {
  body { font-size: 14px; }
  .container, .container-narrow { padding: 16px; }
  .navbar { padding: 12px 16px; }
  .navbar-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-1); border-bottom: 1px solid var(--border); padding: 16px; flex-direction: column; gap: 14px; align-items: stretch; }
  .navbar-links.open { display: flex; }
  .navbar-mobile-toggle { display: block; }
  .hero { padding: 48px 16px 32px; }
  .hero h1 { font-size: 32px; }
  .hero .subtitle { font-size: 16px; }
  .section { padding: 40px 16px; }
  .auth-card { padding: 28px 22px; }
  .lesson-container { padding: 16px; }
  .lesson-title { font-size: 26px; }
  .lesson-block p { font-size: 15px; }
  input, textarea, select { font-size: 16px !important; }
  .pricing-card.featured { transform: none; }
  .module-card-header h3 { font-size: 16px; }
}

/* ───── Handy-Kompakt-Ansicht (≤560px) ───── */
@media (max-width: 560px) {
  body { font-size: 14px; }
  h1 { font-size: 24px; }
  h2 { font-size: 20px; }
  h3 { font-size: 16px; }
  .container, .container-narrow { padding: 14px; }
  .card { padding: 16px; }
  /* Dashboard */
  .dashboard-header { margin-bottom: 20px; gap: 10px; }
  .dashboard-header h1 { font-size: 22px; }
  .dashboard-greeting { font-size: 13px; }
  .stats-row { gap: 10px; }
  .stat-card { padding: 14px 16px; }
  .stat-card .stat-value { font-size: 22px; }
  .stat-card .stat-label { font-size: 10px; }
  /* Lektionen */
  .lesson-container { padding: 14px; }
  .lesson-title { font-size: 21px; }
  .lesson-block { margin-bottom: 20px; }
  .lesson-block h3 { font-size: 16px; }
  .lesson-block p { font-size: 14.5px; line-height: 1.65; }
  .lesson-callout { padding: 14px 16px; }
  .lesson-callout h4 { font-size: 14px; }
  .lesson-block img { border-radius: 10px; }
  /* Buttons / Navbar etwas kompakter */
  .btn-lg { padding: 13px 22px; font-size: 15px; min-height: 46px; }
  .navbar-brand { font-size: 16px; }
}