:root {
    --bg-color: #1e1e1e;
    --card-bg: #2d2d2d;
    --text-color: #ffffff;
    --accent-green: #4caf50;
    --accent-red: #f44336;
    --accent-blue: #2196f3;
    --accent-yellow: #ffc107;
    --border-radius: 12px;
}

* {
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    margin: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 10px;
}

/* Header */
.game-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    margin-bottom: 10px;
}

.info-item {
    font-size: 1.2rem;
}

.highlight {
    font-weight: bold;
    color: var(--accent-yellow);
    margin-left: 8px;
}

.btn-reset {
    background: transparent;
    border: 1px solid #666;
    color: #aaa;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
}

/* Player Grid */
.players-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 10px;
}

.player-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 15px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}

.player-card.dealer {
    border-color: var(--accent-yellow);
}

.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wind {
    font-weight: bold;
    color: #888;
    font-size: 1.2rem;
}

.player-name {
    background: transparent;
    border: none;
    color: white;
    text-align: right;
    font-size: 1.2rem;
    width: 150px;
}

.player-score {
    font-size: 3rem;
    text-align: center;
    font-weight: bold;
    font-variant-numeric: tabular-nums;
}

.player-actions {
    display: flex;
    justify-content: center;
}

.btn-riichi {
    background: var(--accent-red);
    color: white;
    border: none;
    padding: 10px 30px;
    border-radius: 20px;
    font-size: 1rem;
    cursor: pointer;
    opacity: 0.9;
}
.btn-riichi:active { opacity: 1; transform: scale(0.98); }

/* Footer Action Bar */
.action-bar {
    margin-top: 10px;
    display: flex;
    gap: 10px;
    height: 80px;
}

.btn-action {
    flex: 1;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    color: white;
}

.btn-win { background-color: var(--accent-green); }
.btn-draw { background-color: var(--accent-blue); }

/* Modals */
.modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.hidden { display: none; }

.modal-content {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.section { margin-bottom: 20px; }

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #aaa;
}

.toggle-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.toggle-btn {
    flex: 1;
    padding: 15px;
    background: #444;
    border: 2px solid #444;
    color: white;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
}

.toggle-btn.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
}
.toggle-btn.disabled {
    background: #222;
    border-color: #222;
    color: #666;
    cursor: not-allowed;
}

.points-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.points-grid button {
    padding: 12px;
    background: #444;
    border: none;
    color: white;
    border-radius: 6px;
    font-size: 1.1rem;
    cursor: pointer;
}

.limit-btn {
    background: #555 !important;
    font-weight: bold;
}

.custom-input {
    display: flex;
    align-items: center;
    gap: 10px;
}

.custom-input input {
    flex: 1;
    padding: 10px;
    font-size: 1.2rem;
    border-radius: 6px;
    border: 1px solid #555;
    background: #333;
    color: white;
}

.modal-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.modal-actions button {
    flex: 1;
    padding: 15px;
    border-radius: 8px;
    font-size: 1.2rem;
    border: none;
    cursor: pointer;
}

.btn-cancel { background: #555; color: white; }
.btn-confirm { background: var(--accent-green); color: white; }

/* Tenpai checkbox styles */
.tenpai-row {
    background: #333;
    margin-bottom: 8px;
    padding: 15px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.tenpai-row input {
    transform: scale(1.5);
}

/* Switch Toggle */
.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

.switch input { 
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  -webkit-transition: .4s;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  -webkit-transition: .4s;
  transition: .4s;
}

input:checked + .slider {
  background-color: var(--accent-green);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--accent-green);
}

input:checked + .slider:before {
  -webkit-transform: translateX(26px);
  -ms-transform: translateX(26px);
  transform: translateX(26px);
}

/* Rounded sliders */
.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}

/* Sound Settings */
.sound-player-block {
    background: #333;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.sound-player-title {
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--accent-yellow);
}

.sound-input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 8px;
    align-items: center;
}

.sound-input-row label {
    width: 60px;
    font-size: 0.9em;
}

.sound-input-row input {
    flex: 1;
    padding: 8px;
    border-radius: 4px;
    border: 1px solid #555;
    background: #222;
    color: white;
}

.btn-preview {
    padding: 8px 12px;
    background: var(--accent-blue);
    border: none;
    border-radius: 4px;
    color: white;
    cursor: pointer;
}