@import url('https://fonts.googleapis.com/css2?family=Black+Han+Sans&family=Noto+Sans+KR:wght@400;600;700;800&display=swap');

:root {
  --dku-blue: #003876;
  --dku-blue-mid: #1c4f9c;
  --dku-sky: #4c6ef5;
  --dku-gold: #e8b923;
  --dku-red: #e03131;
  --bg: #eef2f7;
  --panel: #ffffff;
  --ink: #1b2430;
  --muted: #6c7a89;
  --line: #d5deea;
  --font-display: 'Black Han Sans', 'Noto Sans KR', sans-serif;
  --font-body: 'Noto Sans KR', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(ellipse at 10% 0%, rgba(76, 110, 245, 0.12), transparent 45%),
    radial-gradient(ellipse at 90% 100%, rgba(232, 185, 35, 0.1), transparent 40%),
    linear-gradient(180deg, #f7f9fc 0%, #e8eef6 100%);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.25rem;
  background: linear-gradient(90deg, var(--dku-blue), var(--dku-blue-mid));
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 56, 118, 0.25);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.04em;
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}

.brand small {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  opacity: 0.85;
  letter-spacing: 0.08em;
}

.stats {
  display: flex;
  gap: 1.25rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.stat strong {
  display: block;
  font-size: 1.15rem;
  margin-top: 0.1rem;
  color: var(--dku-gold);
}

.stat.combo strong.hot,
#stat-combo.hot {
  color: #ff922b;
  animation: pulse 0.45s ease infinite alternate;
}

@keyframes pulse {
  from { transform: scale(1); }
  to { transform: scale(1.08); }
}

.layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  flex: 1;
  min-height: 0;
}

@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-left: none !important; border-top: 1px solid var(--line); }
}

.stage-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: 0.9rem 1rem 1.2rem;
  min-width: 0;
}

.canvas-frame {
  position: relative;
  width: 100%;
  max-width: min(1280px, calc(100vw - 320px));
  margin: 0 auto;
  aspect-ratio: 1280 / 720;
  border: 2px solid var(--dku-blue);
  border-radius: 6px;
  overflow: hidden;
  background: #c8dcc8;
  box-shadow:
    0 10px 30px rgba(0, 56, 118, 0.12),
    inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

@media (max-width: 980px) {
  .canvas-frame {
    max-width: 100%;
  }
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

#fever-banner,
#unlock-banner {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  padding: 0.4rem 1.1rem;
  border-radius: 999px;
  z-index: 2;
  pointer-events: none;
  white-space: nowrap;
  max-width: 92%;
  overflow: hidden;
  text-overflow: ellipsis;
}

#fever-banner {
  top: 10px;
  background: linear-gradient(90deg, #ff922b, #fcc419);
  color: #212529;
  font-size: 0.95rem;
  box-shadow: 0 4px 16px rgba(255, 146, 43, 0.4);
  animation: pulse 0.5s ease infinite alternate;
}

#unlock-banner {
  top: 48px;
  background: linear-gradient(90deg, var(--dku-blue), #4c6ef5);
  color: #fff;
  font-size: 0.82rem;
  font-family: var(--font-body);
  font-weight: 800;
  box-shadow: 0 4px 16px rgba(28, 79, 156, 0.35);
  animation: pulse 0.6s ease infinite alternate;
}

#fever-banner[hidden],
#unlock-banner[hidden] { display: none !important; }

.sidebar h2 small {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0;
  text-transform: none;
}

.section-toggle {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.5rem;
  text-align: left;
  border: 1.5px solid var(--line);
  background: #f1f5fb;
  color: var(--dku-blue);
  padding: 0.5rem 0.65rem;
  margin-bottom: 0.45rem;
  border-radius: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.section-toggle small {
  flex: 1;
  font-size: 0.65rem;
  color: var(--muted);
  font-weight: 600;
}

.section-toggle .chevron {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--muted);
}

.building-section.collapsed #building-shop,
.building-section.collapsed #building-locked-summary {
  display: none;
}

.building-grid {
  display: grid !important;
  grid-template-columns: 1fr 1fr;
  gap: 0.3rem;
}

.building-grid .shop-btn {
  padding: 0.4rem 0.45rem;
  gap: 0.4rem;
}

.building-grid .shop-info strong {
  font-size: 0.68rem;
  line-height: 1.2;
}

.building-grid .shop-info em {
  font-size: 0.62rem;
}

.locked-summary {
  margin: 0.4rem 0 0;
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.35;
}

.shop-btn.locked {
  display: none;
}

.shop-btn .lock-tag {
  font-size: 0.65rem;
  color: var(--dku-sky);
  font-weight: 800;
}

.shop-btn.building-item .shop-info em {
  color: var(--dku-blue);
}

.bars {
  display: grid;
  gap: 0.45rem;
  max-width: min(1280px, calc(100vw - 320px));
  width: 100%;
  margin: 0 auto;
}

.bar-row {
  display: grid;
  grid-template-columns: 88px 1fr 90px;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
}

.bar-track {
  height: 12px;
  background: #dbe3ee;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.bar-fill {
  height: 100%;
  width: 100%;
  transition: width 0.15s linear;
  border-radius: 999px;
}

#base-hp-fill {
  background: linear-gradient(90deg, #2b8a3e, #51cf66);
}

#base-hp-fill.critical {
  background: linear-gradient(90deg, #c92a2a, #ff6b6b);
}

#wave-timer-fill {
  background: linear-gradient(90deg, var(--dku-blue), var(--dku-sky));
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  max-width: min(1280px, calc(100vw - 320px));
  width: 100%;
  margin: 0 auto;
}

button {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  border: 1.5px solid var(--dku-blue);
  background: #fff;
  color: var(--dku-blue);
  padding: 0.55rem 0.8rem;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s, background 0.12s;
}

button:hover:not(:disabled) {
  background: #edf2ff;
  box-shadow: 0 4px 12px rgba(28, 79, 156, 0.15);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

button.primary {
  background: var(--dku-blue);
  color: #fff;
}

button.primary:hover:not(:disabled) {
  background: var(--dku-blue-mid);
}

button.spell {
  flex: 1;
  min-width: 120px;
  border-color: #7048e8;
  color: #5f3dc4;
}

button.spell .cd {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.68rem;
  color: var(--dku-gold);
  font-weight: 800;
}

button.barricade-btn.active,
.shop-btn.active {
  background: #fff3bf;
  border-color: var(--dku-gold);
  color: #9c6b00;
  box-shadow: 0 0 0 2px rgba(232, 185, 35, 0.25);
}

button.danger {
  border-color: var(--dku-red);
  color: var(--dku-red);
  width: 100%;
  margin-top: 0.4rem;
}

.hint {
  max-width: min(1280px, calc(100vw - 320px));
  width: 100%;
  margin: 0 auto;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.45;
}

.sidebar {
  border-left: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  overflow-y: auto;
}

.sidebar h2 {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--dku-blue);
  text-transform: uppercase;
}

#tower-shop {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.shop-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  text-align: left;
  padding: 0.5rem 0.6rem;
}

.shop-btn.unaffordable,
.barricade-btn.unaffordable { opacity: 0.45; }

.shop-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--c);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.06);
  flex-shrink: 0;
}

.shop-info {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.shop-info strong { font-size: 0.8rem; }
.shop-info em {
  font-style: normal;
  font-size: 0.7rem;
  color: #9c6b00;
  font-weight: 700;
}

#tower-panel {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem;
  background: #f8fafc;
  min-height: 150px;
}

#tower-panel h3 {
  margin: 0 0 0.3rem;
  font-size: 0.95rem;
}

#tower-panel h3 small {
  color: var(--muted);
  font-size: 0.75rem;
}

.panel-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.panel-hint .hl {
  color: var(--dku-blue);
  font-weight: 800;
}

#tower-panel label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0.45rem 0;
}

#tower-panel select {
  display: block;
  width: 100%;
  margin-top: 0.2rem;
  padding: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--font-body);
}

.upgrade-row {
  display: grid;
  gap: 0.3rem;
}

.upgrade-row button {
  width: 100%;
  font-size: 0.72rem;
}

#highscore-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.78rem;
  font-weight: 700;
}

#highscore-list li {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--line);
}

#highscore-list li span { color: var(--dku-sky); }
#highscore-list li small { color: var(--muted); }
#highscore-list .empty { color: var(--muted); font-weight: 500; }

.hof-form {
  margin: 0.85rem 0 0.4rem;
  text-align: left;
}
.hof-form label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.hof-row {
  display: flex;
  gap: 0.45rem;
}
.hof-form input {
  flex: 1;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  font: inherit;
  font-weight: 700;
  background: #fff;
}
.hof-status {
  min-height: 1.2em;
  margin: 0.4rem 0 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--dku-sky);
}

#overlay,
#menu-overlay,
#howto-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 24, 48, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  backdrop-filter: blur(4px);
}

#menu-overlay { z-index: 60; }
#howto-overlay { z-index: 70; }

#overlay[hidden],
#menu-overlay[hidden],
#howto-overlay[hidden] {
  display: none !important;
}

.overlay-card {
  background: #fff;
  border: 3px solid var(--dku-blue);
  border-radius: 14px;
  padding: 2rem 2.4rem;
  text-align: center;
  max-width: 90vw;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.overlay-card h1 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--dku-blue);
  margin: 0 0 0.7rem;
}

.overlay-card p {
  color: var(--muted);
  white-space: pre-line;
  margin: 0 0 1.2rem;
  line-height: 1.5;
}

.menu-card {
  min-width: min(420px, 92vw);
  padding: 2.4rem 2.6rem 2.2rem;
}

.menu-kicker {
  margin: 0 0 0.4rem !important;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--dku-sky) !important;
}

.menu-title {
  font-size: 2.4rem !important;
  margin: 0 0 0.5rem !important;
  letter-spacing: 0.04em;
}

.menu-sub {
  margin-bottom: 1.5rem !important;
  font-weight: 600;
}

.menu-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.menu-btn {
  min-width: 140px;
  padding: 0.75rem 1.2rem;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.howto-card {
  text-align: left;
  max-width: min(480px, 92vw);
}

.howto-card h1 {
  text-align: center;
}

.howto-list {
  margin: 0 0 1.4rem;
  padding-left: 1.1rem;
  color: var(--ink);
  line-height: 1.65;
  font-size: 0.9rem;
}

.howto-list li {
  margin-bottom: 0.45rem;
}

.howto-card .primary {
  display: block;
  width: 100%;
}

#tooltip {
  position: fixed;
  z-index: 100;
  background: #1b2430;
  color: #fff;
  border-radius: 8px;
  padding: 0.5rem 0.7rem;
  font-size: 0.78rem;
  max-width: 240px;
  pointer-events: none;
  line-height: 1.4;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

#tooltip[hidden] { display: none !important; }