/* ============================================
   PromptKeyMind — Styles
   "Focused Flow" aesthetic: calm, premium,
   code-editor meets meditation app
   ============================================ */

/* --- CSS Variables / Themes --- */
:root {
  /* Shared */
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --font-ui: 'Outfit', 'SF Pro Display', system-ui, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --transition: 0.2s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Finger zone colors — shared between themes */
  --finger-pinky-l: #e879a0;
  --finger-ring-l: #f0a868;
  --finger-middle-l: #7dd3a8;
  --finger-index-l: #6ea8e0;
  --finger-index-r: #8b8de8;
  --finger-middle-r: #7dd3a8;
  --finger-ring-r: #f0a868;
  --finger-pinky-r: #e879a0;
  --finger-thumb: #a0a0b8;
}

/* Dark theme (default) */
[data-theme="dark"] {
  --bg-primary: #0b0b14;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #242444;
  --bg-elevated: #282850;
  --bg-input: #0e0e1a;
  --text-primary: #e2e4f0;
  --text-secondary: #9999c0;
  --text-muted: #7777a0;
  --accent: #7c6cf0;
  --accent-glow: rgba(124, 108, 240, 0.15);
  --accent-glow-strong: rgba(124, 108, 240, 0.3);
  --correct: #4ade80;
  --error: #f87171;
  --error-bg: rgba(248, 113, 113, 0.1);
  --border: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(124, 108, 240, 0.4);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --key-bg: #252548;
  --key-bg-hover: #24243e;
  --key-border: rgba(255, 255, 255, 0.14);
  --key-active: #7c6cf0;
  --key-active-text: #fff;
  --glow-color: rgba(124, 108, 240, 0.08);
}

/* Light theme */
[data-theme="light"] {
  --bg-primary: #f5f5fa;
  --bg-secondary: #eeeef4;
  --bg-tertiary: #e4e4ee;
  --bg-elevated: #fff;
  --bg-input: #fff;
  --text-primary: #1a1a2e;
  --text-secondary: #6b6b88;
  --text-muted: #9999b0;
  --accent: #5b4fd6;
  --accent-glow: rgba(91, 79, 214, 0.1);
  --accent-glow-strong: rgba(91, 79, 214, 0.2);
  --correct: #16a34a;
  --error: #dc2626;
  --error-bg: rgba(220, 38, 38, 0.06);
  --border: rgba(0, 0, 0, 0.08);
  --border-focus: rgba(91, 79, 214, 0.4);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --key-bg: #fff;
  --key-bg-hover: #f0f0f8;
  --key-border: rgba(0, 0, 0, 0.1);
  --key-active: #5b4fd6;
  --key-active-text: #fff;
  --glow-color: rgba(91, 79, 214, 0.05);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-ui);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background var(--transition-slow), color var(--transition-slow);
  overflow-x: hidden;
}

/* --- Ambient Background Glow --- */
.ambient-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 500px;
  background: radial-gradient(ellipse, var(--glow-color) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transition: background var(--transition-slow);
}

/* --- App Container --- */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 100vh;
}

/* --- Header --- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 8px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  font-size: 1.4rem;
  opacity: 0.7;
}

.logo-text {
  font-family: var(--font-ui);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-accent {
  color: var(--accent);
}

/* Stage Tabs */
.stage-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 4px;
  border: 1px solid var(--border);
}

.stage-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.stage-tab:hover {
  color: var(--text-secondary);
  background: var(--bg-tertiary);
}

.stage-tab.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow-strong);
}

.stage-tab.completed {
  color: var(--correct);
}

.tab-num {
  font-weight: 700;
  font-size: 0.75rem;
}

.tab-label {
  font-weight: 500;
}

/* Header Controls */
.header-controls {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.btn-icon {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
}

.btn-icon:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.btn-icon.btn-small {
  width: auto;
  height: 30px;
  padding: 0 12px;
  font-size: 0.75rem;
  font-family: var(--font-ui);
}

/* Theme toggle icons */
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: none; }

/* --- Stage Info --- */
.stage-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.stage-title h2 {
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.stage-hint {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-top: 2px;
}

.stage-timer {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.timer-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.timer-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.timer-value.warning {
  color: var(--error);
  animation: pulse-warning 1s infinite;
}

@keyframes pulse-warning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* --- Key Progress Bar (Keybr-style) --- */
.key-progress-bar {
  display: flex;
  gap: 3px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  flex-wrap: wrap;
  justify-content: center;
}

.key-progress-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 28px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-muted);
  transition: all var(--transition);
}

.key-progress-item.current {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.key-progress-item.mastered {
  background: rgba(74, 222, 128, 0.15);
  border-color: rgba(74, 222, 128, 0.3);
  color: var(--correct);
}

.key-progress-item.learning {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.3);
  color: #fbbf24;
}

/* --- Stats Bar --- */
.stats-bar {
  display: flex;
  gap: 4px;
  justify-content: center;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  min-width: 100px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.stat-streak .stat-value {
  color: var(--accent);
}

/* --- Typing Area --- */
.typing-area {
  position: relative;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 36px;
  min-height: 160px;
  cursor: text;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.typing-area:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 4px var(--accent-glow), var(--shadow);
}

.typing-text {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 2;
  letter-spacing: 0.01em;
  color: var(--text-muted);
  user-select: none;
}

.typing-text .word {
  display: inline;
  white-space: nowrap;
}

.typing-text .char-space {
  white-space: pre-wrap;
}

.typing-text .char {
  position: relative;
  transition: color 0.05s;
}

.typing-text .char.correct {
  color: var(--correct);
}

.typing-text .char.incorrect {
  color: var(--error);
  background: var(--error-bg);
  border-radius: 2px;
}

.typing-text .char.current {
  color: var(--text-primary);
}

.typing-text .char.current::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 2px;
  height: 1.3em;
  background: var(--accent);
  animation: blink-cursor 1s step-end infinite;
  border-radius: 1px;
}

@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.typing-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: text;
  font-size: 16px; /* prevent zoom on focus */
}

/* --- Action Bar --- */
.action-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.btn {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

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

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 4px 16px var(--accent-glow-strong);
}

/* --- Keyboard Section --- */
.keyboard-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.keyboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.keyboard-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 500;
}

.keyboard-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
  transition: max-height var(--transition-slow), opacity var(--transition-slow), padding var(--transition-slow);
  overflow: hidden;
}

.keyboard-container.hidden {
  max-height: 0;
  opacity: 0;
  padding: 0 20px;
  border: none;
}

.keyboard-row {
  display: flex;
  gap: 4px;
}

/* Mac ISO stagger — left-aligned with padding matching real key positions
   1u = 56px (52px key + 4px gap) */
.keyboard-row:nth-child(1) { padding-left: 0; }       /* number row: flush left */
.keyboard-row:nth-child(2) { padding-left: 28px; }     /* QWERTY: ~0.5u indent */
.keyboard-row:nth-child(3) { padding-left: 42px; }     /* home row: ~0.75u indent */
.keyboard-row:nth-child(4) { padding-left: 0; }        /* bottom: shift starts flush */
.keyboard-row:nth-child(5) { padding-left: 0; }        /* modifiers: flush */

/* Base key style — Mac-like rounded rectangles */
.key {
  width: 52px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  background: var(--key-bg);
  color: var(--text-secondary);
  border: 1px solid var(--key-border);
  border-radius: 7px;
  transition: all 0.1s ease;
  user-select: none;
  position: relative;
  box-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

.key::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 7px;
  opacity: 0.15;
  transition: opacity 0.1s;
}

/* Finger zone colors on keys */
.key[data-finger="pinky-l"]::after { background: var(--finger-pinky-l); }
.key[data-finger="ring-l"]::after { background: var(--finger-ring-l); }
.key[data-finger="middle-l"]::after { background: var(--finger-middle-l); }
.key[data-finger="index-l"]::after { background: var(--finger-index-l); }
.key[data-finger="index-r"]::after { background: var(--finger-index-r); }
.key[data-finger="middle-r"]::after { background: var(--finger-middle-r); }
.key[data-finger="ring-r"]::after { background: var(--finger-ring-r); }
.key[data-finger="pinky-r"]::after { background: var(--finger-pinky-r); }
.key[data-finger="thumb"]::after { background: var(--finger-thumb); }

.key.active {
  background: var(--key-active);
  color: var(--key-active-text);
  border-color: var(--key-active);
  box-shadow: 0 0 16px var(--accent-glow-strong);
  transform: scale(1.08);
}

.key.active::after {
  opacity: 0;
}

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

/* Modifier keys — dimmer, smaller text */
.key.key-modifier {
  opacity: 0.5;
  font-size: 0.72rem;
  font-family: var(--font-ui);
}

.key.key-modifier::after {
  opacity: 0.05;
}

/* Mac modifier widths */
.key-shift { width: 70px; }
.key-mod-sm { width: 44px; font-size: 0.9rem; }
.key-mod { width: 54px; font-size: 0.9rem; }
.key-space { width: 260px; }

/* Finger Legend (hidden — replaced by hand SVGs) */
.finger-legend {
  display: none;
}

/* --- Hand SVG Indicators --- */
.keyboard-with-hands {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  max-height: 500px;
  overflow: hidden;
  transition: max-height var(--transition-slow), opacity var(--transition-slow), gap var(--transition-slow);
}

.hand {
  width: 80px;
  flex-shrink: 0;
  opacity: 0.85;
  transition: opacity var(--transition);
}

.hand svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

/* Palm shape */
.hand .hand-palm {
  fill: var(--bg-tertiary);
  stroke: var(--text-muted);
  stroke-width: 1.5;
  stroke-linejoin: round;
  opacity: 0.5;
  transition: fill var(--transition), stroke var(--transition);
}

/* Finger paths — default: zone color at low opacity */
.hand .finger {
  stroke: var(--text-muted);
  stroke-width: 1.5;
  stroke-linejoin: round;
  stroke-linecap: round;
  opacity: 0.7;
  transition: fill 0.15s ease, opacity 0.15s ease, filter 0.15s ease;
}

/* Finger zone fill colors (low opacity by default) */
.hand .finger[data-finger="pinky-l"] { fill: var(--finger-pinky-l); opacity: 0.35; }
.hand .finger[data-finger="ring-l"] { fill: var(--finger-ring-l); opacity: 0.35; }
.hand .finger[data-finger="middle-l"] { fill: var(--finger-middle-l); opacity: 0.35; }
.hand .finger[data-finger="index-l"] { fill: var(--finger-index-l); opacity: 0.35; }
.hand .finger[data-finger="pinky-r"] { fill: var(--finger-pinky-r); opacity: 0.35; }
.hand .finger[data-finger="ring-r"] { fill: var(--finger-ring-r); opacity: 0.35; }
.hand .finger[data-finger="middle-r"] { fill: var(--finger-middle-r); opacity: 0.35; }
.hand .finger[data-finger="index-r"] { fill: var(--finger-index-r); opacity: 0.35; }
.hand .finger[data-finger="thumb"] { fill: var(--finger-thumb); opacity: 0.35; }

/* Active finger — full brightness + glow */
.hand .finger.active {
  opacity: 1;
  stroke: var(--text-primary);
  stroke-width: 2;
  filter: drop-shadow(0 0 6px currentColor);
}

.hand .finger.active[data-finger="pinky-l"] { fill: var(--finger-pinky-l); filter: drop-shadow(0 0 8px var(--finger-pinky-l)); }
.hand .finger.active[data-finger="ring-l"] { fill: var(--finger-ring-l); filter: drop-shadow(0 0 8px var(--finger-ring-l)); }
.hand .finger.active[data-finger="middle-l"] { fill: var(--finger-middle-l); filter: drop-shadow(0 0 8px var(--finger-middle-l)); }
.hand .finger.active[data-finger="index-l"] { fill: var(--finger-index-l); filter: drop-shadow(0 0 8px var(--finger-index-l)); }
.hand .finger.active[data-finger="pinky-r"] { fill: var(--finger-pinky-r); filter: drop-shadow(0 0 8px var(--finger-pinky-r)); }
.hand .finger.active[data-finger="ring-r"] { fill: var(--finger-ring-r); filter: drop-shadow(0 0 8px var(--finger-ring-r)); }
.hand .finger.active[data-finger="middle-r"] { fill: var(--finger-middle-r); filter: drop-shadow(0 0 8px var(--finger-middle-r)); }
.hand .finger.active[data-finger="index-r"] { fill: var(--finger-index-r); filter: drop-shadow(0 0 8px var(--finger-index-r)); }
.hand .finger.active[data-finger="thumb"] { fill: var(--finger-thumb); filter: drop-shadow(0 0 8px var(--finger-thumb)); }

/* When keyboard is hidden, hide hands and collapse wrapper */
.keyboard-with-hands.hidden {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  gap: 0;
  pointer-events: none;
  transition: max-height var(--transition-slow), opacity var(--transition-slow);
}

/* --- Footer --- */
.app-footer {
  margin-top: auto;
  padding-top: 16px;
}

.daily-goal {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.goal-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  white-space: nowrap;
}

.goal-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.goal-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--correct));
  border-radius: 3px;
  transition: width var(--transition-slow);
}

.goal-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* --- Stage Complete Overlay --- */
.stage-complete {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}

.stage-complete.visible {
  opacity: 1;
  pointer-events: all;
}

.stage-complete-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px 48px;
  text-align: center;
  box-shadow: var(--shadow);
  max-width: 420px;
}

.stage-complete-card h3 {
  font-family: var(--font-ui);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.stage-complete-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.stage-complete-stats {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-bottom: 28px;
}

/* --- Animations --- */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.app-container > * {
  animation: fade-in 0.4s ease both;
}

.app-container > *:nth-child(1) { animation-delay: 0.05s; }
.app-container > *:nth-child(2) { animation-delay: 0.1s; }
.app-container > *:nth-child(3) { animation-delay: 0.15s; }
.app-container > *:nth-child(4) { animation-delay: 0.2s; }
.app-container > *:nth-child(5) { animation-delay: 0.25s; }
.app-container > *:nth-child(6) { animation-delay: 0.3s; }
.app-container > *:nth-child(7) { animation-delay: 0.35s; }
.app-container > *:nth-child(8) { animation-delay: 0.4s; }
.app-container > *:nth-child(9) { animation-delay: 0.45s; }