/* ===== RESET & BASE ===== */
:root {
  color-scheme: dark;
  --bg: #0a0a1a;
  --surface: #12122a;
  --border: #2a2a4a;
  --text: #e8e8f0;
  --text-dim: #8888aa;
  --cyan: #00e5ff;
  --magenta: #ff2ecb;
  --gold: #ffd740;
  --red: #ff4466;
  --green: #00e676;
  --orange: #ffab00;
  --purple: #b388ff;
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.app {
  width: min(1000px, 96vw);
  padding: 1rem 0;
}

/* ===== SCREEN TOGGLE ===== */
.screen { display: none; }
.screen.active { display: block; }

/* ===== START SCREEN ===== */
#start-screen {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  text-align: center;
}

.title {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.4rem;
}

.subtitle {
  color: var(--text-dim);
  font-size: 1.1rem;
  margin-bottom: 1.8rem;
}

.start-high-score {
  margin-bottom: 1.2rem;
  padding: 0.6rem 1.2rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.start-high-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.start-high-value {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--gold);
}

.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  max-width: 480px;
  margin: 0 auto 1.8rem;
  text-align: left;
}

.label-text {
  display: block;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}

select {
  font: inherit;
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  font-size: 1rem;
  cursor: pointer;
  transition: border-color 0.2s;
}

select:focus {
  outline: none;
  border-color: var(--cyan);
}

/* ===== BUTTONS ===== */
.btn {
  font: inherit;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
  font-size: 1rem;
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn-start {
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  color: #000;
  font-size: 1.25rem;
  padding: 0.9rem 2.5rem;
  letter-spacing: 0.03em;
}

.btn-start:hover {
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.4);
}

.btn-primary {
  background: var(--cyan);
  color: #000;
  font-size: 1.1rem;
  padding: 0.8rem 2rem;
}

.btn-primary:hover {
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 1.1rem;
  padding: 0.8rem 2rem;
}

.btn-secondary:hover {
  border-color: var(--cyan);
}

.btn-danger {
  background: #331122;
  color: var(--red);
  border: 1px solid #552233;
  font-size: 1.1rem;
  padding: 0.8rem 2rem;
}

.btn-danger:hover {
  border-color: var(--red);
}

.btn-pause {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
  border-radius: 6px;
  letter-spacing: 0.1em;
}

.btn-pause:hover {
  color: var(--text);
  border-color: var(--text);
}

/* ===== HUD ===== */
.hud {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.hud-item {
  flex: 1;
  text-align: center;
}

.hud-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 0.15rem;
}

.hud-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.hud-score .hud-value { color: var(--cyan); }
.hud-best .hud-value { color: var(--gold); }
.hud-lives .hud-value { color: var(--red); font-size: 1.3rem; }
.hud-timer .hud-value { color: var(--green); }
.hud-streak .hud-value { color: var(--orange); }

/* ===== CANVAS ===== */
.canvas-wrap {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
}

#game-canvas {
  width: 100%;
  height: auto;
  display: block;
  background: #000;
}

/* ===== COUNTDOWN ===== */
.countdown {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 6rem;
  font-weight: 900;
  color: var(--cyan);
  background: rgba(0, 0, 0, 0.6);
  text-shadow: 0 0 30px rgba(0, 229, 255, 0.6);
}

/* ===== INPUT ===== */
#type-input {
  font: inherit;
  width: 100%;
  margin-top: 0.6rem;
  padding: 0.8rem 1rem;
  font-size: 1.2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--surface);
  color: var(--text);
  border: 2px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

#type-input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
}

#type-input::placeholder {
  color: var(--text-dim);
  font-weight: 400;
}

/* ===== MODALS ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 20, 0.85);
  display: grid;
  place-items: center;
  z-index: 100;
  backdrop-filter: blur(4px);
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  min-width: 340px;
  max-width: 440px;
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.1), 0 0 80px rgba(255, 46, 203, 0.06);
}

.modal-title {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.modal-subtitle {
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.modal-buttons {
  display: grid;
  gap: 0.7rem;
}

/* ===== GAME OVER STATS ===== */
.modal-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-bottom: 1.2rem;
  padding: 1rem;
  background: var(--bg);
  border-radius: 10px;
  border: 1px solid var(--border);
}

.stat { text-align: center; }

.stat-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 0.3rem;
}

.stat-value {
  display: block;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--cyan);
}

.high-score-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--gold), var(--orange));
  color: #000;
  font-weight: 900;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  padding: 0.4rem 1.2rem;
  border-radius: 20px;
  margin-bottom: 1.2rem;
}

/* ===== HIDDEN ===== */
.hidden {
  display: none !important;
}