/* ============================================
   RUBIK'S CUBE TIMER - BOLD DESIGN
   Inspired by ingmarvanrheenen.nl
   ============================================ */

/* CSS Variables */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-hover: #222222;

  --text-primary: #ffffff;
  --text-secondary: #888888;
  --text-muted: #555555;

  --accent-primary: #00ff88;
  --accent-secondary: #00cc6a;
  --accent-glow: rgba(0, 255, 136, 0.3);

  --danger: #ff4444;
  --warning: #ffaa00;

  /* Typography */
  --font-display: 'Inter', -apple-system, sans-serif;
  --font-mono: 'Space Mono', 'Courier New', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* No border radius - sharp edges */
  --radius: 0px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

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

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

body.modal-open {
  overflow: hidden;
}

/* App Container */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) var(--space-xl);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--bg-tertiary);
}

.header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__logo {
  width: 32px;
  height: 32px;
  position: relative;
  transform-style: preserve-3d;
  animation: rotate3d 6s linear infinite;
}

.header__logo .cube-face {
  position: absolute;
  width: 32px;
  height: 32px;
  border: 2px solid var(--accent-primary);
  background: rgba(0, 255, 136, 0.1);
}

.header__logo .cube-front {
  transform: translateZ(16px);
}

.header__logo .cube-back {
  transform: rotateY(180deg) translateZ(16px);
}

.header__logo .cube-right {
  transform: rotateY(90deg) translateZ(16px);
}

.header__logo .cube-left {
  transform: rotateY(-90deg) translateZ(16px);
}

.header__logo .cube-top {
  transform: rotateX(90deg) translateZ(16px);
}

.header__logo .cube-bottom {
  transform: rotateX(-90deg) translateZ(16px);
}

@keyframes rotate3d {
  from {
    transform: rotateX(-20deg) rotateY(0deg);
  }

  to {
    transform: rotateX(-20deg) rotateY(360deg);
  }
}

.header__title {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.header__title--accent {
  color: var(--accent-primary);
}

.header__user {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__username {
  font-weight: 600;
  color: var(--text-secondary);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--space-sm) var(--space-lg);
  border: 2px solid var(--text-primary);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

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

.btn--primary:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.btn--ghost {
  border-color: var(--text-muted);
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-md);
}

.btn--ghost:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  background: transparent;
}

.btn--large {
  padding: var(--space-md) var(--space-2xl);
  font-size: 1rem;
}

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

.main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 0;
}

@media (max-width: 1024px) {
  .main {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   TIMER SECTION
   ============================================ */

.timer-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl);
  min-height: calc(100vh - 80px);
}

.scramble {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--text-secondary);
  text-align: center;
  padding: var(--space-lg) var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  margin-bottom: var(--space-3xl);
  max-width: 600px;
  line-height: 1.8;
  letter-spacing: 0.05em;
}

.timer {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  user-select: none;
}

.timer__time {
  font-family: var(--font-mono);
  font-size: clamp(6rem, 20vw, 12rem);
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.timer__ms {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 400;
  color: var(--text-muted);
}

.timer--ready .timer__time {
  color: var(--accent-primary);
}

.timer--running .timer__time {
  color: var(--warning);
}

.timer-state {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: var(--space-2xl);
  height: 1.5rem;
}

.timer-controls {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

/* Cube Selector */
.cube-selector {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  border: 2px solid var(--accent-primary);
  color: var(--accent-primary);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300ff88' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
  min-width: 100px;
}

.cube-selector:hover {
  background-color: rgba(0, 255, 136, 0.1);
}

.cube-selector:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.cube-selector option {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: var(--space-sm);
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar {
  background: var(--bg-secondary);
  border-left: 1px solid var(--bg-tertiary);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  overflow-y: auto;
  max-height: calc(100vh - 80px);
}

@media (max-width: 1024px) {
  .sidebar {
    border-left: none;
    border-top: 1px solid var(--bg-tertiary);
    max-height: none;
  }
}

/* Stats Card */
.stats-card {
  background: var(--bg-tertiary);
  padding: var(--space-lg);
}

.stats-card__title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.stat {
  text-align: center;
}

.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: var(--space-xs);
}

.stat__label {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

/* Leaderboard */
.leaderboard {
  flex: 1;
}

.leaderboard__title,
.recent__title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--bg-tertiary);
}

.leaderboard__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.leaderboard__entry {
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  transition: background var(--transition-fast);
}

.leaderboard__entry:hover {
  background: var(--bg-hover);
}

.leaderboard__rank {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-muted);
}

.leaderboard__entry:nth-child(1) .leaderboard__rank {
  color: #ffd700;
}

.leaderboard__entry:nth-child(2) .leaderboard__rank {
  color: #c0c0c0;
}

.leaderboard__entry:nth-child(3) .leaderboard__rank {
  color: #cd7f32;
}

.leaderboard__name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard__time {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.leaderboard__empty,
.recent__empty {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-align: center;
  padding: var(--space-xl) 0;
}

/* Recent Solves */
.recent__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  max-height: 200px;
  overflow-y: auto;
}

.recent__entry {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  font-size: 0.875rem;
}

.recent__time {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-primary);
}

.recent__date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================
   MODAL
   ============================================ */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all var(--transition-normal);
}

.modal--open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal__backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
}

.modal__content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  padding: var(--space-2xl);
  width: calc(100% - 2rem);
  max-width: 450px;
  max-height: calc(100vh - 4rem);
  margin: auto;
  overflow-x: hidden;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal--open .modal__content {
  transform: translateY(0);
}

.modal__title {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xl);
  text-align: center;
}

.modal__users {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  max-height: 200px;
  overflow-y: auto;
}

.modal__user {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--bg-tertiary);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.modal__user:hover {
  border-color: var(--accent-primary);
}

.modal__user-name {
  font-weight: 600;
}

.modal__user-stats {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.modal__divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.modal__divider::before,
.modal__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--bg-tertiary);
}

.modal__form {
  display: flex;
  gap: var(--space-md);
}

/* Input */
.input {
  flex: 1;
  font-family: var(--font-display);
  font-size: 1rem;
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border: 2px solid var(--bg-tertiary);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.input::placeholder {
  color: var(--text-muted);
}

.input:focus {
  border-color: var(--accent-primary);
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ============================================
   ANIMATIONS
   ============================================ */

/* No pulse animation - clean timer display */