/* ── RechtFlott — Design System ── */

:root {
  /* Light theme */
  --bg:        #f8f7f4;
  --bg2:       #efeee9;
  --card:      #ffffff;
  --text:      #1a1a1a;
  --muted:     #7a7a75;
  --line:      #e4e3de;
  --accent:    #2563eb;
  --accent-bg: #eff4ff;
  --success:   #16a34a;
  --success-bg:#ecfdf5;
  --danger:    #dc2626;
  --danger-bg: #fef2f2;
  --gold:      #f59e0b;
  --shadow:    0 1px 3px rgba(0,0,0,.06), 0 6px 16px rgba(0,0,0,.04);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.08), 0 20px 40px rgba(0,0,0,.06);
  /* Finger zone pastels (very subtle) */
  --f-lp-bg: #faf0f0; --f-lr-bg: #faf5ed; --f-lm-bg: #fafaeb;
  --f-li-bg: #eef8f0; --f-ri-bg: #eef7fa; --f-rm-bg: #eef2fa;
  --f-rr-bg: #f2effa; --f-rp-bg: #faf0f5; --f-thumb-bg: #f2f2f4;
  --radius:    12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --font:      "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", "JetBrains Mono", Consolas, monospace;
  --transition: .18s ease;
}

.dark {
  --bg:        #111113;
  --bg2:       #1c1c1f;
  --card:      #1c1c1f;
  --text:      #e8e8e6;
  --muted:     #8a8a85;
  --line:      #2a2a2e;
  --accent:    #5b9cf6;
  --accent-bg: #1a2540;
  --success:   #4ade80;
  --success-bg:#0a2015;
  --danger:    #f87171;
  --danger-bg: #2a0f0f;
  --gold:      #fbbf24;
  --shadow:    0 1px 3px rgba(0,0,0,.2), 0 6px 16px rgba(0,0,0,.15);
  --shadow-lg: 0 4px 12px rgba(0,0,0,.3), 0 20px 40px rgba(0,0,0,.25);
  /* Finger zone pastels (very subtle) — dark */
  --f-lp-bg: #201818; --f-lr-bg: #201b15; --f-lm-bg: #201f15;
  --f-li-bg: #152018; --f-ri-bg: #151f20; --f-rm-bg: #151820;
  --f-rr-bg: #191520; --f-rp-bg: #20151a; --f-thumb-bg: #1a1a1d;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ── Mode Selection Screen ── */
.mode-screen {
  position: fixed; inset: 0;
  display: grid; place-items: center;
  background: var(--bg);
  z-index: 100;
  animation: fadeIn .4s ease;
}

.mode-card {
  max-width: 480px; width: 90%;
  text-align: center;
  padding: 40px 32px;
}

.mode-logo {
  font-size: 48px;
  margin-bottom: 12px;
  animation: float 3s ease-in-out infinite;
}

.mode-card h1 {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 6px;
}

.mode-sub {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 32px;
}

.mode-actions {
  display: flex; flex-direction: column; gap: 12px;
}

.mode-actions .btn {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px; text-align: left;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
}

.mode-actions .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.mode-actions .btn--primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.mode-actions .btn strong { font-size: 16px; display: block; }
.mode-actions .btn small { color: var(--muted); font-size: 13px; display: block; margin-top: 2px; }
.mode-actions .btn--primary small { color: rgba(255,255,255,.6); }
.btn-icon { font-size: 28px; flex-shrink: 0; }

/* ── Top Bar ── */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 10px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--card);
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(12px);
}

.topbar-left { display: flex; align-items: center; gap: 10px; }

.topbar-brand {
  font-family: inherit; font-size: 16px; font-weight: 700;
  background: none; border: none; color: var(--text); cursor: pointer;
  padding: 4px 0;
}
.topbar-brand:hover { color: var(--accent); }

.chip {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 11px; font-weight: 600;
  letter-spacing: .5px; text-transform: uppercase;
  background: var(--accent-bg);
  color: var(--accent);
}

.topbar-stats {
  display: flex; gap: 16px; align-items: center;
}

.stat { text-align: center; }
.stat-val { display: block; font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-lbl { font-size: 10px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }

.stat--best .stat-val { color: var(--gold); }

.topbar-right { display: flex; gap: 6px; }

.icon-btn {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: transparent;
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition);
}
.icon-btn:hover { background: var(--bg2); }

/* Make icon buttons more visible in dark mode */
.dark .icon-btn {
  background: rgba(255,255,255,0.02);
  border-color: rgba(255,255,255,0.06);
  color: var(--text);
}
.dark .icon-btn:hover { background: rgba(255,255,255,0.03); }

/* ── Streak Bar ── */
.streak-bar {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; padding: 6px 20px;
  background: linear-gradient(90deg, var(--accent-bg), var(--bg));
  font-size: 13px; font-weight: 500;
  border-bottom: 1px solid var(--line);
}

.streak-sep { color: var(--muted); }
.streak-goal { color: var(--muted); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: none; border-radius: 999px;
  padding: 10px 18px;
  font-family: inherit; font-size: 14px; font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.btn--primary { background: var(--text); color: var(--bg); }
.btn--primary:hover { opacity: .85; }
.btn--secondary { background: var(--bg2); color: var(--text); border: 1px solid var(--line); }
.btn--ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn--ghost:hover { background: var(--bg2); }
.btn--sm { padding: 6px 12px; font-size: 13px; }

/* ── Main Layout ── */
.main {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px;
  gap: 16px;
  min-height: calc(100vh - 200px);
}

/* ── Sidebar ── */
.sidebar {
  width: 300px;
  flex-shrink: 0;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 14px;
  display: flex; flex-direction: column;
  gap: 10px;
  max-height: calc(100vh - 160px);
  position: sticky; top: 80px;
  overflow: hidden;
  transition: all .25s ease;
}

.sidebar.closed {
  width: 0; padding: 0; border: none; overflow: hidden; opacity: 0;
  pointer-events: none;
}

.sidebar-head {
  display: flex; align-items: center; justify-content: space-between;
}

.sidebar-head h2 { font-size: 16px; font-weight: 600; }

.sidebar-close { font-size: 14px; }

/* Tabs */
.tabs {
  display: flex; gap: 2px;
  background: var(--bg2);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.tab {
  flex: 1;
  padding: 6px 4px;
  border: none; border-radius: var(--radius-xs);
  background: transparent;
  font-family: inherit; font-size: 12px; font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  transition: all var(--transition);
}

.tab.active {
  background: var(--card);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}

.tab:hover:not(.active) { color: var(--text); }

.tabs--sm { margin-top: 4px; }
.tabs--sm .tab { font-size: 11px; padding: 4px 3px; }

/* Filters */
.sidebar-filters { display: flex; gap: 6px; }

.input {
  flex: 1;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: inherit; font-size: 13px;
  transition: border-color var(--transition);
}
.input:focus { outline: none; border-color: var(--accent); }

/* Lesson list */
.lesson-list {
  flex: 1;
  overflow-y: auto;
  display: flex; flex-direction: column;
  gap: 6px;
  padding-right: 4px;
}

.lesson-list::-webkit-scrollbar { width: 4px; }
.lesson-list::-webkit-scrollbar-track { background: transparent; }
.lesson-list::-webkit-scrollbar-thumb { background: var(--line); border-radius: 2px; }

.lesson-card {
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: all var(--transition);
  width: 100%;
}

.lesson-card:hover { background: var(--bg2); }
.lesson-card.active { background: var(--accent-bg); border-color: var(--accent); }

.lesson-title { font-size: 14px; font-weight: 500; margin-bottom: 2px; }
.lesson-meta { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.lesson-desc { font-size: 12px; color: var(--muted); margin-top: 2px; }

.load-more { text-align: center; padding-top: 4px; }

/* ── Trainer Panel ── */
.trainer {
  flex: 1;
  min-width: 0;
  position: relative;
  display: flex; flex-direction: column;
  gap: 12px;
}

.trainer-top {
  display: flex; align-items: center; gap: 10px;
}

.progress {
  flex: 1;
  height: 6px;
  background: var(--bg2);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 999px;
  transition: width .2s ease;
}

.trainer-actions { display: flex; gap: 6px; }

/* Definition panel */
.def-panel {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.def-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.def-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); }
.rg-badge {
  display: inline-block; font-size: 10px; font-weight: 600;
  padding: 1px 6px; border-radius: var(--radius-xs);
  background: var(--accent); color: #fff;
  margin-left: 8px; vertical-align: middle;
}
.def-panel h3 { font-size: 18px; margin-top: 2px; }

.def-body {
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--bg2);
  border-radius: var(--radius-sm);
  font-size: 14px; line-height: 1.5;
  color: var(--text);
  white-space: pre-wrap;
}

/* ── Typing Zone ── */
.typing-zone {
  display: block;
  /* Use normal inline wrapping for characters/spans to avoid single-letter wraps */
  word-break: normal;
  overflow-wrap: normal;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.7;
  min-height: 220px;
  cursor: text;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow);
  position: relative;
  white-space: pre-wrap;
}

/* Prevent words from breaking between individual character spans by grouping words */
.typing-zone .word {
  display: inline-block;
  white-space: nowrap;
}

.typing-zone:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.typing-zone span { opacity: .35; transition: all .1s ease; }

/* Ensure whitespace spans have visible width even if rendering issues occur */
/* (removed temporary space-span width hack) */

.typing-zone span.active {
  opacity: 1;
  background: var(--accent-bg);
  border-radius: 2px;
  padding: 0 1px;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.typing-zone span.correct {
  opacity: 1;
  color: var(--success);
}

.typing-zone span.incorrect {
  opacity: 1;
  color: var(--danger);
  background: var(--danger-bg);
  border-radius: 3px;
  padding: 0 1px;
}

.tips {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.disclaimer {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 10px;
  font-weight: 400;
  color: var(--muted);
  opacity: .4;
  margin-top: auto;
  padding-top: .5rem;
  font-family: var(--font-base);
}

/* Password gate styles */
.pw-gate { position: fixed; inset: 0; display: grid; place-items: center; background: rgba(0,0,0,0.6); z-index: 9999; }
.pw-gate.hidden { display: none; }
.pw-panel { background: var(--card); padding: 22px; border-radius: 12px; width: 340px; box-shadow: var(--shadow-lg); text-align:center; }
.pw-panel h2 { margin-bottom: 6px; }
.pw-panel p { color: var(--muted); font-size: 13px; }
.pw-panel input { width: 100%; margin: 10px 0; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 15px; }
.pw-actions { display:flex; gap:8px; justify-content:center; }
.pw-hint { margin-top:8px; font-size:12px; color:var(--muted); }

/* Global, always-visible impressum link (fixed bottom) */
.global-impressum {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 10px;
  text-align: center;
  z-index: 10002;
  pointer-events: auto;
}
.global-impressum a {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  box-shadow: var(--shadow);
  opacity: 0.95;
}
.global-impressum a:hover { color: var(--text); }

/* ── Completion Overlay ── */
.completion {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background: rgba(0,0,0,.4);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
  border-radius: var(--radius);
  z-index: 5;
}

.completion.show {
  opacity: 1;
  pointer-events: auto;
}

.completion-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 32px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  max-width: 380px;
  animation: scaleIn .35s ease;
}

.completion-icon {
  font-size: 48px;
  margin-bottom: 8px;
  animation: bounce .6s ease;
}

.completion-card h3 { font-size: 22px; margin-bottom: 4px; }
.completion-card > p { color: var(--muted); font-size: 14px; margin-bottom: 16px; }

.completion-stats {
  display: flex; gap: 20px; justify-content: center;
  margin-bottom: 16px;
}

.cs { text-align: center; }
.cs-val { display: block; font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
.cs-lbl { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }

.completion-badge {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #000;
  font-weight: 700; font-size: 14px;
  padding: 8px 16px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 16px;
  animation: pulse 1.5s ease infinite;
}

.completion-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ── Keyboard ── */
.keyboard-wrap {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 15;
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 12px 20px 16px;
  transition: transform .3s ease, opacity .3s ease;
}

.keyboard-wrap > * {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.keyboard-wrap.collapsed {
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
}

body.keyboard-open {
  padding-bottom: 190px;
}

/* When keyboard is open reduce sidebar height so bottom lessons remain reachable */
body.keyboard-open .sidebar {
  max-height: calc(100vh - 160px - 190px);
}

.keyboard-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}

.keyboard-title { font-size: 13px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }

.keyboard-grid {
  display: grid;
  grid-template-columns: repeat(11, 1fr);
  gap: 5px;
}

.key {
  padding: 10px 4px;
  text-align: center;
  background: var(--card);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  border: 1px solid var(--line);
  transition: all .15s ease;
  color: var(--text);
}

/* Subtle pastel per finger zone */
.key.finger-lp   { background: var(--f-lp-bg); }
.key.finger-lr   { background: var(--f-lr-bg); }
.key.finger-lm   { background: var(--f-lm-bg); }
.key.finger-li   { background: var(--f-li-bg); }
.key.finger-ri   { background: var(--f-ri-bg); }
.key.finger-rm   { background: var(--f-rm-bg); }
.key.finger-rr   { background: var(--f-rr-bg); }
.key.finger-rp   { background: var(--f-rp-bg); }
.key.finger-thumb { background: var(--f-thumb-bg); }

.key.wide {
  grid-column: 1 / -1;
  padding: 10px;
}

.key.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--accent) 40%, transparent);
  animation: keyGlow .8s ease-in-out infinite alternate;
}

.key.home {
  border-bottom: 2px solid var(--accent);
}

.key.bump::after {
  content: "";
  display: block;
  width: 8px; height: 2px;
  background: var(--accent);
  border-radius: 1px;
  margin: 2px auto 0;
}

.finger-hint {
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  min-height: 28px;
  color: var(--accent);
  letter-spacing: .3px;
}

.hint-finger { color: var(--text); }

.hint-key {
  display: inline-block;
  padding: 1px 8px;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 14px;
  margin-left: 6px;
  text-transform: uppercase;
}

.finger-legend { display: flex; gap: 4px; flex-wrap: wrap; }

/* Finger pills — alternating zones */
.finger-pill {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 10px;
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
  transition: all var(--transition);
}

.finger-pill.finger-lp   { background: var(--f-lp-bg); }
.finger-pill.finger-lr   { background: var(--f-lr-bg); }
.finger-pill.finger-lm   { background: var(--f-lm-bg); }
.finger-pill.finger-li   { background: var(--f-li-bg); }
.finger-pill.finger-ri   { background: var(--f-ri-bg); }
.finger-pill.finger-rm   { background: var(--f-rm-bg); }
.finger-pill.finger-rr   { background: var(--f-rr-bg); }
.finger-pill.finger-rp   { background: var(--f-rp-bg); }
.finger-pill.finger-thumb { background: var(--f-thumb-bg); }

.finger-pill.active {
  background: var(--accent) !important;
  border-color: var(--accent);
  color: #fff !important;
}

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 12px 20px;
  font-size: 12px;
  color: var(--muted);
}

/* ── Confetti Canvas ── */
.confetti-canvas {
  position: fixed; inset: 0;
  z-index: 200;
  pointer-events: none;
}

/* ── Animations ── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes scaleIn {
  from { transform: scale(.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes bounce {
  0% { transform: scale(0); }
  50% { transform: scale(1.3); }
  70% { transform: scale(.9); }
  100% { transform: scale(1); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes keyGlow {
  from { box-shadow: 0 2px 8px rgba(37,99,235,.2); }
  to { box-shadow: 0 4px 16px rgba(37,99,235,.4); }
}

@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-3px); }
  40%, 60% { transform: translateX(3px); }
}

.shake { animation: shake .4s ease; }

/* ── Responsive ── */
@media (max-width: 860px) {
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 50;
    width: 300px;
    border-radius: 0;
    max-height: 100vh;
    box-shadow: var(--shadow-lg);
  }
  .sidebar.closed {
    transform: translateX(-100%);
    width: 300px; padding: 14px; opacity: 1;
  }
  .topbar-stats { gap: 10px; }
  .stat-val { font-size: 15px; }
}

@media (max-width: 600px) {
  .main { padding: 12px; }
  .topbar { padding: 8px 12px; }
  .topbar-stats { display: none; }
  .typing-zone { font-size: 18px; padding: 16px; min-height: 180px; }
  .sidebar { width: 260px; }
}