/* ============================================
     打砖块 Breakout — 样式
     ============================================ */

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

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(145deg, #0b0e1a 0%, #1a1f2f 50%, #0f121e 100%);
    font-family: 'Segoe UI', 'PingFang SC', Roboto, Helvetica, Arial, sans-serif;
    color: #e0e4f0;
}

/* ---------- 主容器 ---------- */
#gameContainer {
    background: rgba(22, 28, 46, 0.85);
    backdrop-filter: blur(8px);
    border-radius: 24px;
    padding: 28px 36px 32px;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    max-width: 880px;
    width: fit-content;
}

h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #f7971e, #ffd200);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 14px;
    text-shadow: 0 0 40px rgba(255, 210, 0, 0.15);
}

/* ---------- 信息栏 ---------- */
#ui {
    display: flex;
    justify-content: space-between;
    padding: 10px 20px;
    margin-bottom: 12px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    font-size: 17px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

#ui span {
    display: flex;
    align-items: center;
    gap: 6px;
}

#score { color: #ffd700; }
#lives { color: #ff6b6b; }
#level { color: #69db7c; }

/* ---------- 画布 ---------- */
#gameCanvas {
    display: block;
    margin: 0 auto;
    border-radius: 16px;
    background: #0f1322;
    box-shadow:
        inset 0 0 60px rgba(0, 0, 0, 0.5),
        0 8px 32px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.06);
    width: 800px;
    height: 600px;
}

/* ---------- 按钮 ---------- */
#controls {
    display: flex;
    gap: 14px;
    justify-content: center;
    margin: 16px 0 10px;
}

button {
    padding: 10px 32px;
    border: none;
    border-radius: 40px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    letter-spacing: 1px;
}

#startBtn {
    background: linear-gradient(135deg, #f7971e, #ffd200);
    color: #1a1a2e;
    box-shadow: 0 4px 16px rgba(255, 210, 0, 0.3);
}

#startBtn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 24px rgba(255, 210, 0, 0.45);
}

#pauseBtn {
    background: rgba(255, 255, 255, 0.08);
    color: #b0b8d0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

#pauseBtn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

/* ---------- 提示 ---------- */
#tip {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.25);
    margin-top: 6px;
    letter-spacing: 0.5px;
}