/* ===== Fonts ===== */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@500;700&display=swap');

/* ===== Tokens ===== */
:root {
  --green: #00C9B7;
  --green-dim: #009e90;
  --green-glow: rgba(0, 201, 183, 0.30);
  --green-bg: rgba(0, 201, 183, 0.08);
  --gold: #FBBF24;
  --gold-dim: #d9a020;
  --gold-glow: rgba(251, 191, 36, 0.30);
  --gold-bg: rgba(251, 191, 36, 0.06);
  --red: #F87171;
  --red-bg: rgba(248, 113, 113, 0.08);

  --bg-0: #060a13;
  --bg-1: #0c1221;
  --bg-2: rgba(15, 23, 42, 0.75);
  --bg-3: rgba(30, 41, 59, 0.50);
  --border: rgba(148, 163, 184, 0.10);
  --border-hover: rgba(148, 163, 184, 0.20);

  --text-1: #f8fafc;
  --text-2: #cbd5e1;
  --text-3: #64748b;

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;
  --ease: cubic-bezier(.4,0,.2,1);
}

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

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

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-0);
  color: var(--text-1);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 48px 20px;
  overflow-x: hidden;
  position: relative;
}

/* Ambient glow */
body::before {
  content: '';
  position: fixed;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0,201,183,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ===== Container ===== */
.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 580px;
}

/* ===== Screens ===== */
.screen {
  display: none;
  animation: fadeIn .45s var(--ease) forwards;
}
.screen.active {
  display: flex;
  flex-direction: column;
  align-items: center;
}
@keyframes fadeIn {
  from { opacity:0; transform:translateY(16px); }
  to   { opacity:1; transform:translateY(0); }
}

/* =============================================
   START SCREEN
   ============================================= */

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 32px;
}

.logo-ring {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-bg), rgba(99,102,241,0.08));
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulseSlow 4s ease-in-out infinite;
}

.logo-emoji { font-size: 2rem; }

@keyframes pulseSlow {
  0%,100% { box-shadow: 0 0 0 0 rgba(0,201,183,0.15); }
  50%     { box-shadow: 0 0 0 12px rgba(0,201,183,0); }
}

.title {
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--text-1);
}

.title span {
  background: linear-gradient(135deg, var(--green), #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  margin-top: 12px;
  color: var(--text-3);
  font-size: 0.92rem;
  line-height: 1.6;
  font-weight: 400;
}

/* How To */
.how-to {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 26px;
  margin-bottom: 28px;
  backdrop-filter: blur(20px);
}

.how-to-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.how-to-icon { font-size: 1.1rem; }

.how-to-title h3 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 1.2px;
}

.how-to ol {
  list-style: none;
  counter-reset: step;
}

.how-to li {
  counter-increment: step;
  position: relative;
  padding-left: 32px;
  color: var(--text-3);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-bottom: 4px;
  font-weight: 400;
}

.how-to li strong {
  color: var(--text-2);
  font-weight: 600;
}

.how-to li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 3px;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: var(--green-bg);
  color: var(--green);
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Start Button */
.btn-start {
  position: relative;
  width: 100%;
  padding: 18px;
  font-size: 1.15rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  background: var(--green);
  color: #fff;
  cursor: pointer;
  font-family: 'Outfit', sans-serif;
  transition: all .25s var(--ease);
  overflow: hidden;
}

.btn-start .btn-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 60%);
  opacity: 0;
  transition: opacity .3s;
}

.btn-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px var(--green-glow);
}

.btn-start:hover .btn-glow { opacity: 1; }

.btn-start:active { transform: translateY(0); }

/* =============================================
   GAME SCREEN
   ============================================= */

/* Timer */
.timer-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.timer-ring {
  text-align: center;
  padding: 18px 40px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
}

.timer-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 2.5px;
  margin-bottom: 4px;
}

.timer {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--green);
  text-shadow: 0 0 40px var(--green-glow);
  letter-spacing: 3px;
}

/* Words Row */
.words-row {
  width: 100%;
  display: flex;
  gap: 12px;
  align-items: stretch;
  margin-bottom: 20px;
}

/* Word Card */
.word-card {
  flex: 1;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 18px 20px;
  backdrop-filter: blur(20px);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: border-color .3s var(--ease);
}

.word-card:hover { border-color: var(--border-hover); }

.word-card-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.word-card-badge.start {
  background: var(--green-bg);
  color: var(--green);
  border: 1px solid rgba(0,201,183,0.15);
}

.word-card-badge.end {
  background: var(--gold-bg);
  color: var(--gold);
  border: 1px solid rgba(251,191,36,0.15);
}

.word-card-word {
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  flex-grow: 1;
  display: flex;
  align-items: center;
}

.start-card { border-color: rgba(0,201,183,0.12); }
.end-card   { border-color: rgba(251,191,36,0.12); }

/* Link Buttons */
.btn-link-start,
.btn-link-end {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all .25s var(--ease);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-link-start {
  background: var(--green-bg);
  color: var(--green);
  border: 1px solid rgba(0,201,183,0.18);
}

.btn-link-start:hover {
  background: rgba(0,201,183,0.15);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,201,183,0.15);
}

/* Pulse animation for start link */
.btn-link-start.pulse-attention {
  border-color: var(--red);
  color: var(--red);
  background: var(--red-bg);
  animation: pulseRed 1.2s ease-in-out infinite;
}

@keyframes pulseRed {
  0%   { box-shadow: 0 0 0 0 rgba(248,113,113,0.45); }
  50%  { box-shadow: 0 0 0 10px rgba(248,113,113,0); }
  100% { box-shadow: 0 0 0 0 rgba(248,113,113,0); }
}

.btn-link-end {
  background: var(--gold-bg);
  color: var(--gold);
  border: 1px solid rgba(251,191,36,0.18);
}

.btn-link-end:hover {
  background: rgba(251,191,36,0.15);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(251,191,36,0.15);
}

/* Connector */
.connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-shrink: 0;
  padding: 0 2px;
}

.connector-line {
  width: 2px;
  height: 20px;
  background: linear-gradient(to bottom, var(--green-bg), var(--gold-bg));
  border-radius: 2px;
}

.connector-arrow {
  font-size: 0.7rem;
  color: var(--text-3);
  animation: pulseArrow 2s ease-in-out infinite;
}

@keyframes pulseArrow {
  0%,100% { opacity: 0.4; }
  50%     { opacity: 1; }
}

/* Actions */
.actions {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.actions-sub {
  display: flex;
  gap: 10px;
}

.actions-sub .btn { flex: 1; }

/* Record Button */
.btn-record {
  width: 100%;
  padding: 16px;
  font-size: 1.05rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--gold), #F59E0B);
  color: #1a1a2e;
  cursor: pointer;
  font-family: 'Outfit', sans-serif;
  transition: all .25s var(--ease);
}

.btn-record:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px var(--gold-glow);
}

.btn-record:active { transform: translateY(0); }

/* Pulse animation for record button */
.btn-record.pulse-record {
  animation: pulseGold 1.2s ease-in-out infinite;
}

@keyframes pulseGold {
  0%   { box-shadow: 0 0 0 0 rgba(251,191,36,0.5); }
  50%  { box-shadow: 0 0 0 12px rgba(251,191,36,0); }
  100% { box-shadow: 0 0 0 0 rgba(251,191,36,0); }
}

.btn-record.restart-mode {
  background: linear-gradient(135deg, var(--green), var(--green-dim));
  color: #fff;
  box-shadow: 0 4px 20px var(--green-glow);
}

.btn-record.restart-mode:hover {
  box-shadow: 0 12px 36px var(--green-glow);
}

/* Ghost Buttons */
.btn-ghost {
  padding: 12px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  font-family: 'Outfit', sans-serif;
  transition: all .25s var(--ease);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.04);
  border-color: var(--border-hover);
  color: var(--text-1);
}

.btn-ghost-danger {
  color: var(--text-3);
  border-color: rgba(248,113,113,0.15);
}

.btn-ghost-danger:hover {
  color: var(--red);
  background: var(--red-bg);
  border-color: rgba(248,113,113,0.25);
}

/* Step Guide */
.step-guide {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.step-guide-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.02);
  border: 1px solid transparent;
  transition: all .3s var(--ease);
}

.step-guide-item.active {
  background: var(--green-bg);
  border-color: rgba(0,201,183,0.15);
}

.step-guide-item.done {
  opacity: 0.45;
}

.step-num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  color: var(--text-3);
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .3s var(--ease);
}

.step-guide-item.active .step-num {
  background: var(--green);
  color: #fff;
  box-shadow: 0 0 12px var(--green-glow);
}

.step-text {
  font-size: 0.82rem;
  color: var(--text-3);
  font-weight: 400;
  line-height: 1.4;
  transition: color .3s var(--ease);
}

.step-guide-item.active .step-text {
  color: var(--text-2);
}

.step-text strong {
  color: var(--text-1);
  font-weight: 600;
}

.step-guide-item.active .step-text strong {
  color: var(--green);
}

/* =============================================
   RECORDS
   ============================================= */

/* Best Record */
.best-record {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 22px;
  background: var(--gold-bg);
  border: 1px solid rgba(251,191,36,0.18);
  border-radius: var(--radius);
  margin-bottom: 12px;
  animation: fadeIn .35s var(--ease) forwards;
}

.best-record-icon { font-size: 1.4rem; }

.best-record-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}

.best-record-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.best-record-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gold);
  text-shadow: 0 0 20px var(--gold-glow);
  margin-left: auto;
}

/* Records Section */
.records-section {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  backdrop-filter: blur(20px);
  animation: fadeIn .35s var(--ease) forwards;
}

.records-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.records-header h3 {
  font-size: 0.82rem;
  color: var(--text-2);
  font-weight: 700;
  letter-spacing: 0.3px;
}

.btn-clear-all {
  background: transparent;
  border: 1px solid rgba(248,113,113,0.18);
  color: var(--text-3);
  padding: 5px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 7px;
  cursor: pointer;
  font-family: 'Outfit', sans-serif;
  transition: all .25s var(--ease);
}

.btn-clear-all:hover {
  color: var(--red);
  background: var(--red-bg);
  border-color: rgba(248,113,113,0.30);
}

.records-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 280px;
  overflow-y: auto;
}

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

/* Record Item */
.record-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius-sm);
  transition: all .2s var(--ease);
  animation: fadeIn .25s var(--ease) forwards;
}

.record-item:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--border);
}

.record-item.best {
  border-color: rgba(251,191,36,0.20);
  background: var(--gold-bg);
}

.record-rank {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-3);
  min-width: 26px;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
}

.record-item.best .record-rank { color: var(--gold); }

.record-words {
  flex: 1;
  min-width: 0;
}

.record-route {
  font-size: 0.8rem;
  color: var(--text-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
}

.record-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--green);
  white-space: nowrap;
}

.record-item.best .record-time { color: var(--gold); }

.record-delete {
  background: transparent;
  border: none;
  color: var(--text-3);
  font-size: 1rem;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  transition: all .2s var(--ease);
  line-height: 1;
  opacity: 0.5;
}

.record-item:hover .record-delete { opacity: 1; }

.record-delete:hover {
  color: var(--red);
  background: var(--red-bg);
}

/* =============================================
   PARTICLES
   ============================================= */
.particle {
  position: fixed;
  width: 3px;
  height: 3px;
  background: var(--green);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  animation: floatUp 8s infinite;
}

@keyframes floatUp {
  0%   { opacity:0; transform:translateY(100vh) scale(0); }
  8%   { opacity:0.4; }
  88%  { opacity:0.4; }
  100% { opacity:0; transform:translateY(-10vh) scale(1); }
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 560px) {
  body { padding: 24px 16px; }

  .title { font-size: 1.9rem; }

  .timer { font-size: 2rem; letter-spacing: 2px; }
  .timer-ring { padding: 14px 28px; }

  .words-row { flex-direction: column; gap: 8px; }

  .connector {
    flex-direction: row;
    padding: 4px 0;
  }
  .connector-line {
    width: 20px;
    height: 2px;
  }

  .word-card-word { font-size: 1.2rem; }

  .actions-sub { flex-direction: column; }

  .record-route { font-size: 0.72rem; }

  .best-record-content { flex-direction: column; align-items: flex-start; gap: 4px; }
  .best-record-time { margin-left: 0; }
}