/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0A0D11;
  --card:        #141A22;
  --card-hover:  #1A2230;
  --border:      #1E2838;
  --text:        #F0EDE4;
  --muted:       #6B7888;
  --accent:      #E8612C;
  --accent-dim:  rgba(232, 97, 44, 0.12);
  --accent-glow: rgba(232, 97, 44, 0.25);

  /* Trainingstypen */
  --c-lauf:      #58A6FF;
  --c-lauf-bg:   rgba(88, 166, 255, 0.10);
  --c-intervall: #F78166;
  --c-intervall-bg: rgba(247, 129, 102, 0.10);
  --c-tempo:     #FF7B72;
  --c-tempo-bg:  rgba(255, 123, 114, 0.10);
  --c-kraft:     #BC8CFF;
  --c-kraft-bg:  rgba(188, 140, 255, 0.10);
  --c-rad:       #39D3BB;
  --c-rad-bg:    rgba(57, 211, 187, 0.10);
  --c-schwimmen: #79C0FF;
  --c-schwimmen-bg: rgba(121, 192, 255, 0.10);
  --c-wettkampf: #E8612C;
  --c-wettkampf-bg: rgba(232, 97, 44, 0.15);
  --c-marathon:  #D4A574;
  --c-marathon-bg: rgba(212, 165, 116, 0.15);
  --c-rest:      #2D3748;
  --c-rest-bg:   transparent;
  --c-done:      #3FB950;
  --c-done-bg:   rgba(63, 185, 80, 0.10);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 17, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-brand {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-brand .u5 {
  color: var(--accent);
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  text-decoration: none;
}

/* ===== Hero ===== */
.hero {
  padding: 5rem 2rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 50% 0%, rgba(232, 97, 44, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-title .highlight {
  color: var(--accent);
}

.hero-sub {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

/* ===== Countdown ===== */
.countdown {
  display: inline-flex;
  gap: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem 2.5rem;
  margin-bottom: 3rem;
}

.countdown-unit {
  text-align: center;
  min-width: 4rem;
}

.countdown-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  display: block;
}

.countdown-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.25rem;
  display: block;
}

.countdown-sep {
  font-size: 2rem;
  color: var(--border);
  align-self: center;
  line-height: 1;
  padding-bottom: 1.2rem;
}

/* ===== Progress Overview ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto 3rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  text-align: center;
}

.stat-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  display: block;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.25rem;
}

.progress-bar-wrap {
  max-width: 600px;
  margin: 0 auto 3rem;
}

.progress-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #F0A060);
  border-radius: 99px;
  transition: width 0.6s ease;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 0.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #d45520;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--muted);
  text-decoration: none;
}

/* ===== Section Container ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 3rem 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.section-sub {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* ===== Aktuelle Woche Hero ===== */
.current-week-banner {
  background: var(--accent-dim);
  border: 1px solid var(--accent-glow);
  border-radius: 0.75rem;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.current-week-banner .badge {
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 0.3rem;
  white-space: nowrap;
}

.current-week-banner p {
  font-size: 0.9rem;
  color: var(--muted);
}

.current-week-banner strong {
  color: var(--text);
}

/* ===== Trainingsplan ===== */
.plan-week {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color 0.2s;
}

.plan-week.is-current {
  border-color: var(--accent-glow);
  box-shadow: 0 0 0 1px var(--accent-glow);
}

.plan-week.is-done {
  opacity: 0.65;
}

.week-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: background 0.15s;
}

.week-header:hover { background: var(--card-hover); }

.week-header.open { border-bottom-color: var(--border); }

.week-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
  min-width: 60px;
}

.week-title {
  font-weight: 700;
  font-size: 0.95rem;
  flex: 1;
}

.week-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.week-km {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--muted);
}

.week-progress-mini {
  display: flex;
  gap: 3px;
  align-items: center;
}

.week-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.2s;
}

.week-dot.done { background: var(--c-done); }
.week-dot.rest { background: var(--border); opacity: 0.4; }

.week-chevron {
  color: var(--muted);
  font-size: 0.8rem;
  transition: transform 0.25s;
}

.week-header.open .week-chevron { transform: rotate(180deg); }

.week-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 0.25rem;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-glow);
}

/* ===== Tage-Grid ===== */
.week-body {
  display: none;
  padding: 1rem 1.25rem;
  gap: 0.5rem;
  flex-direction: column;
}

.week-body.open { display: flex; }

.day-row {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid transparent;
  transition: all 0.15s;
}

.day-row:not(.is-rest):hover {
  background: var(--card-hover);
  border-color: var(--border);
}

.day-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--muted);
}

.day-einheit {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
}

.typ-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.day-row.done .day-einheit { text-decoration: line-through; opacity: 0.5; }
.day-row.done .day-label { opacity: 0.5; }

/* Typ-Farben */
.typ-lauf      .typ-dot { background: var(--c-lauf); }
.typ-intervall .typ-dot { background: var(--c-intervall); }
.typ-tempo     .typ-dot { background: var(--c-tempo); }
.typ-kraft     .typ-dot { background: var(--c-kraft); }
.typ-rad       .typ-dot { background: var(--c-rad); }
.typ-schwimmen .typ-dot { background: var(--c-schwimmen); }
.typ-wettkampf .typ-dot { background: var(--c-wettkampf); }
.typ-marathon  .typ-dot { background: var(--c-marathon); }
.typ-rest      .typ-dot { background: var(--c-rest); }

.typ-marathon .day-einheit { font-weight: 700; color: var(--c-marathon); }

/* Checkbox */
.check-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  font-size: 0.75rem;
  transition: all 0.2s;
  flex-shrink: 0;
}

.check-btn:hover { border-color: var(--c-done); color: var(--c-done); }

.day-row.done .check-btn {
  border-color: var(--c-done);
  background: var(--c-done);
  color: #fff;
}

.day-row.is-rest .check-btn { display: none; }
.day-row.is-marathon .check-btn { display: none; }

/* HF-Badge */
.hf-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--muted);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  background: var(--bg);
  border: 1px solid var(--border);
}

.hf-badge.hf-0 { opacity: 0; }

/* ===== Legende ===== */
.legende {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.legende-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.legende-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 4rem;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .countdown { gap: 0.75rem; padding: 1.25rem 1.5rem; }
  .countdown-num { font-size: 1.75rem; }
  .countdown-sep { display: none; }
  .hero { padding: 3rem 1.25rem 2rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .week-meta { display: none; }
  .nav { padding: 0 1rem; }
}