@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@400;600;700&display=swap');

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

body {
    font-family: 'Baloo 2', 'Comic Sans MS', Arial, sans-serif;
    background: linear-gradient(135deg, #00796b 0%, #004d40 100%);
    min-height: 100vh;
    padding-bottom: 50px;
    color: #333;
}

/* === HEADER === */
.header {
    text-align: center;
    padding: 14px 20px 6px;
    color: white;
}
.header h1 {
    font-size: 30px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}
.header .subtitle {
    font-size: 13px;
    opacity: 0.8;
}

/* === VISITOR COUNTER === */
.visitor-counter {
    position: fixed;
    top: 10px;
    right: 14px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    border-radius: 18px;
    padding: 4px 14px;
    font-size: 12px;
    color: #555;
    box-shadow: 0 2px 10px rgba(0,0,0,0.12);
    z-index: 9999;
}
.visitor-counter strong { color: #00796b; }

/* === TAB BAR === */
.tab-bar {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 8px 20px;
}
.tab-btn {
    padding: 10px 24px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 12px 12px 0 0;
    cursor: pointer;
    transition: all 0.2s;
    background: rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.8);
}
.tab-btn:hover { background: rgba(255,255,255,0.5); color: white; }
.tab-btn.active {
    background: white;
    color: #00796b;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

/* === TAB CONTENT === */
.tab-content {
    display: none;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 16px 16px;
}
.tab-content.active { display: block; }

/* === GAME LAYOUT === */
.game-layout {
    display: flex;
    gap: 16px;
    background: white;
    border-radius: 0 16px 16px 16px;
    padding: 18px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    align-items: flex-start;
}

/* === SIDEBAR === */
.sidebar {
    width: 280px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.sidebar-title {
    font-size: 22px;
    font-weight: 700;
    color: #00796b;
    text-align: center;
    padding-bottom: 8px;
    border-bottom: 2px solid #e0f2f1;
}
.sidebar-text {
    font-size: 14px;
    line-height: 1.6;
    color: #555;
    background: #f5f5f5;
    border-radius: 8px;
    padding: 10px;
}

/* === SCORE === */
.score-display {
    font-size: 22px;
    font-weight: 700;
    color: #ff6f00;
    text-align: center;
    padding: 6px;
    background: #fff8e1;
    border-radius: 8px;
}

/* === BUTTONS === */
.btn-primary {
    display: block;
    width: 100%;
    padding: 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    background: linear-gradient(135deg, #4CAF50, #2E7D32);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(76,175,80,0.4); }

/* === ARROW BUTTONS — bố trí như bàn phím === */
.arrow-container {
    display: grid;
    grid-template-areas: ". up ." "left down right";
    grid-template-rows: 48px 48px;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 5px;
    padding: 8px;
    max-width: 220px;
    margin: 0 auto;
}
#up, .arrow-container [id$="Up"] { grid-area: up; }
#left, .arrow-container [id$="Left"] { grid-area: left; }
#right, .arrow-container [id$="Right"] { grid-area: right; }
#down, .arrow-container [id$="Down"] { grid-area: down; }
.arrow-btn {
    background: #FDD835;
    border: none;
    border-radius: 10px;
    font-size: 20px;
    font-weight: 700;
    font-family: inherit;
    color: #555;
    cursor: pointer;
    transition: all 0.15s;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
}
.arrow-btn:hover { background: #FFEB3B; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }

/* === LEVEL SELECTOR (chung cho Code + Rabbit) === */
.level-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: center;
    padding: 6px 0;
}
.lvl-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 2px solid #ccc;
    background: #f5f5f5;
    font-size: 13px;
    font-weight: 700;
    font-family: inherit;
    color: #999;
    cursor: not-allowed;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}
.lvl-btn.unlocked {
    cursor: pointer;
    border-color: #90CAF9;
    background: #E3F2FD;
    color: #1565C0;
}
.lvl-btn.unlocked:hover {
    background: #BBDEFB;
    transform: scale(1.1);
}
.lvl-btn.won {
    border-color: #66BB6A;
    background: #E8F5E9;
    color: #2E7D32;
}
.lvl-btn.won::after {
    content: '';
    display: none;
}
.lvl-btn.current {
    border-color: #FF9800;
    background: #FFF3E0;
    color: #E65100;
    box-shadow: 0 0 0 2px #FFE0B2;
    transform: scale(1.1);
}

/* === CANVAS === */
canvas {
    border-radius: 12px;
    border: 3px solid #00796b;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    background: #e0f2f1;
    display: block;
}

/* ================================================ */
/* === TAB 2: VIẾT CODE === */
/* ================================================ */

.puzzle-info {
    display: flex;
    gap: 8px;
    justify-content: center;
}
.badge {
    display: inline-block;
    padding: 3px 12px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 12px;
    background: #e0f2f1;
    color: #00796b;
}
.candy-badge { background: #fce4ec; color: #c62828; }

/* === COMMAND LIST === */
.command-list-wrap { }
.command-list-label {
    font-size: 12px;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}
.command-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    min-height: 42px;
    max-height: 120px;
    overflow-y: auto;
    padding: 8px;
    background: #fafafa;
    border: 2px dashed #ccc;
    border-radius: 8px;
}
.command-list:empty::after {
    content: "Chưa có lệnh nào...";
    color: #bbb;
    font-size: 13px;
    font-style: italic;
}

.cmd-block {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 4px 8px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    transition: opacity 0.15s;
    position: relative;
}
.cmd-block:hover { opacity: 0.8; }
.cmd-block.active-cmd {
    outline: 3px solid #FF5722;
    outline-offset: 1px;
    animation: pulse 0.5s infinite;
}
.cmd-block .cmd-x {
    font-size: 10px;
    margin-left: 2px;
    opacity: 0.7;
}
.cmd-block .cmd-x:hover { opacity: 1; }
.cmd-up, .cmd-down { background: #1976D2; }
.cmd-left, .cmd-right { background: #F57C00; }
.cmd-pick { background: #2E7D32; }

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* === COMMAND BUTTONS === */
.cmd-buttons {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
    justify-content: center;
}
.cmd-btn {
    padding: 8px 12px;
    font-size: 16px;
    font-weight: 700;
    font-family: inherit;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    color: white;
    transition: transform 0.1s, box-shadow 0.1s;
    min-width: 42px;
}
.cmd-btn:hover { transform: scale(1.08); box-shadow: 0 3px 10px rgba(0,0,0,0.2); }
.cmd-btn:active { transform: scale(0.95); }
.cmd-btn.cmd-up, .cmd-btn.cmd-down { background: #1976D2; }
.cmd-btn.cmd-left, .cmd-btn.cmd-right { background: #F57C00; }
.cmd-btn.cmd-pick { background: #2E7D32; font-size: 14px; }
.cmd-btn.cmd-jump { background: #7B1FA2; }
.cmd-block.cmd-jump { background: #7B1FA2; }

/* === ACTION BUTTONS === */
.action-buttons {
    display: flex;
    gap: 6px;
}
.btn-run, .btn-clear, .btn-reset, .btn-next {
    flex: 1;
    padding: 10px 8px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.15s;
}
.btn-run { background: #4CAF50; color: white; }
.btn-run:hover { background: #388E3C; }
.btn-run:disabled { background: #aaa; cursor: not-allowed; }
.btn-clear { background: #EF5350; color: white; }
.btn-clear:hover { background: #D32F2F; }
.btn-reset { background: #78909C; color: white; }
.btn-reset:hover { background: #546E7A; }
.btn-next { background: #FF9800; color: white; }
.btn-next:hover:not(:disabled) { background: #F57C00; }
.btn-next:disabled { background: #ccc; cursor: not-allowed; }

/* === MESSAGE === */
.code-message {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    padding: 6px;
    border-radius: 8px;
    min-height: 24px;
    transition: all 0.3s;
}
.code-message.success { background: #E8F5E9; color: #2E7D32; }
.code-message.error { background: #FFEBEE; color: #C62828; }
.code-message.info { background: #E3F2FD; color: #1565C0; }

/* ================================================ */
/* === TAB 3: RUN RABBIT RUN === */
/* ================================================ */
.rabbit-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: #FFF3E0;
    border-radius: 10px;
    padding: 10px;
}
.rabbit-level-name {
    font-size: 17px;
    font-weight: 700;
    color: #E65100;
    text-align: center;
}
.rabbit-level-desc {
    font-size: 13px;
    color: #795548;
    text-align: center;
    line-height: 1.4;
}
.rabbit-enemy-icons {
    font-size: 22px;
    text-align: center;
    letter-spacing: 4px;
}
.rabbit-arrows .rabbit-arrow {
    background: #FF9800;
}
.rabbit-arrows .rabbit-arrow:hover {
    background: #FFB74D;
}
.rabbit-turn-count {
    font-size: 15px;
    font-weight: 700;
    color: #E65100;
    text-align: center;
    background: #FFF8E1;
    border-radius: 6px;
    padding: 4px 8px;
    margin-top: 2px;
}
.rabbit-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 10px;
    justify-content: center;
    font-size: 12px;
    color: #777;
    background: #f5f5f5;
    border-radius: 8px;
    padding: 8px;
}
#rabbitCanvas {
    border-color: #E65100;
    background: #E8F5E9;
}