:root {
  --bgc-blue: #0d6bb8;
  --bgc-red: #df2a34;
  --bgc-green: #38a245;
  --bgc-yellow: #f6b412;
  --bgc-light: #f5f8fa;

  --glass-bg: rgba(32, 40, 51, 0.65);
  --glass-border: rgba(255, 255, 255, 0.15);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: #121212;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.5)),
    url("/assets/images/bg.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  gap: 15px;
}

.logo-container {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  background: transparent;
}

.logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.header h1 {
  color: var(--bgc-light);
  text-shadow:
    0 0 10px rgba(13, 107, 184, 0.8),
    0 0 20px rgba(13, 107, 184, 0.4);
  font-size: 2rem;
  letter-spacing: 1px;
}

.container {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  padding: 2rem;
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  height: 100%;
  min-height: 0;
}

/* Panels (Glassmorphism) */
.panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}

.center-panel {
  align-items: center;
  justify-content: center;
}

h2 {
  color: var(--bgc-light);
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
  border-bottom: 2px solid var(--bgc-yellow);
  padding-bottom: 0.5rem;
  display: inline-block;
}

/* Left Panel - Input */
.hint {
  font-size: 0.85rem;
  color: #adb5bd;
  margin-bottom: 1rem;
}

textarea {
  flex: 1;
  width: 100%;
  resize: none;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  padding: 1rem;
  font-size: 1rem;
  margin-bottom: 1rem;
  transition: all 0.3s;
  background: rgba(255, 255, 255, 0.05);
  color: var(--bgc-light);
}

textarea:focus {
  outline: none;
  border-color: var(--bgc-blue);
  box-shadow: 0 0 10px rgba(13, 107, 184, 0.4);
}

.stats {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--bgc-light);
  padding: 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--bgc-green);
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn {
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    filter 0.2s;
  color: white;
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.3);
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--bgc-blue), #2980b9);
  box-shadow: 0 4px 15px rgba(13, 107, 184, 0.3);
}
.btn-secondary {
  background: var(--bgc-green);
}
.btn-danger {
  background: var(--bgc-red);
}

/* Center Panel - Wheel */
.wheel-container {
  position: relative;
  width: 100%;
  max-width: min(450px, 50vh);
  aspect-ratio: 1 / 1;
  margin-bottom: 2rem;
}

canvas {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transition: transform 0.1s ease-out;
}

.wheel-pointer {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-top: 40px solid var(--bgc-red);
  filter: drop-shadow(0 4px 4px rgba(0, 0, 0, 0.4));
  z-index: 10;
}

.wheel-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20%;
  height: 20%;
  background: #333;
  border-radius: 50%;
  border: 4px solid var(--bgc-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--bgc-light);
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.3);
  z-index: 5;
}

.winner-display {
  padding: 1rem 2rem;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.05); /* 毛玻璃輕微透白 */
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  min-width: 60%;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.winner-display.show {
  opacity: 1;
  transform: translateY(0);
}

.winner-display.highlight {
  animation: pulse 1.5s infinite alternate;
}

.winner-text {
  font-size: 1.8rem;
  font-weight: bold;
  color: var(--bgc-light); /* 改為淺色，不再使用死硬的紅色 */
  letter-spacing: 2px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

@keyframes pulse {
  from {
    box-shadow:
      0 0 15px rgba(255, 255, 255, 0.1),
      0 8px 32px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.15);
    transform: scale(1);
  }
  to {
    box-shadow:
      0 0 30px rgba(255, 255, 255, 0.3),
      0 8px 32px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.02);
  }
}

/* Right Panel - History */
.history-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 5px;
}

.history-list::-webkit-scrollbar {
  width: 6px;
}

.history-list::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 10px;
}

.history-item {
  background: color-mix(in srgb, var(--glass-bg) 80%, var(--c) 20%);
  padding: 0.8rem 1rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--c);
}

.history-item .rank {
  font-weight: bold;
  color: var(--bgc-light);
  margin-right: 15px;
  font-size: 1.1rem;
}

.history-item .name {
  font-size: 1.1rem;
  color: var(--bgc-light);
  flex-grow: 1; /* 讓名字佔據空間，把權重推到右邊 */
}

.history-item .weight-badge {
  font-size: 0.85rem;
  color: #adb5bd;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.3rem 0.6rem;
  border-radius: 20px;
}

.empty-state {
  color: #adb5bd;
  text-align: center;
  margin-top: 2rem;
  font-style: italic;
}

/* Responsive */
@media (max-width: 1200px) {
  body {
    height: auto;
    min-height: 100vh;
    overflow-x: hidden;
  }
  
  .container {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto 1fr;
    height: auto;
  }
  
  .center-panel {
    grid-column: 1 / -1;
    grid-row: 1;
  }
  
  .left-panel {
    grid-column: 1;
    grid-row: 2;
    height: 500px;
  }
  
  .right-panel {
    grid-column: 2;
    grid-row: 2;
    height: 500px;
  }
}

@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    padding: 1rem;
    gap: 1rem;
  }
  
  .center-panel,
  .left-panel, 
  .right-panel {
    grid-column: 1;
    grid-row: auto;
  }

  .left-panel,
  .right-panel {
    height: 500px;
    min-height: auto;
  }

  .wheel-container {
    max-width: 100%;
  }

  .header h1 {
    font-size: 1.5rem;
  }
}