/* codex: 2026-06-02 优化大屏响应式布局，调整最大宽度为1600px，并修复移动端SVG拉伸问题 */
/* Safe Cracker 50 - style.css */

/* ========== 全局重置与基础样式 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* 配色变量 */
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0b0;
    --accent-gold: #FFD700;
    --accent-warm: #e67e22;
    --accent-green: #2ecc71;
    --accent-red: #e74c3c;
    --wood-dark: #3E2723;
    --wood-medium: #6D4C41;
    --wood-light: #A1887F;
    --shadow-color: rgba(0, 0, 0, 0.4);

    /* 尺寸变量 */
    --max-width: 1600px;
    --border-radius: 12px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Courier+Prime:wght@400;700&display=swap');

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, #0a1628 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    overflow-x: hidden;
}

/* ========== 标题区域 ========== */
.header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 0.6s ease-out;
}

.header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 50%, var(--accent-gold) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
    letter-spacing: 3px;
    margin-bottom: var(--spacing-sm);
}

.header .subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 1px;
}

/* ========== 主布局 ========== */
.game-layout {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    justify-content: center;
    max-width: var(--max-width);
    width: 100%;
    flex-wrap: wrap;
}

/* ========== 拼图容器 ========== */
.puzzle-container {
    position: relative;
    flex-shrink: 0;
    animation: fadeIn 0.8s ease-out;
}

.puzzle-container svg {
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.5));
    transition: filter 0.3s ease;
    max-width: 100%;
    height: auto !important; /* 强制等比例，防止在移动端因 inline-height 发生垂直方向拉伸 */
}

.puzzle-container svg:hover {
    filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.6));
}

/* SVG 环组的过渡效果 */
.ring-group {
    transition: transform 0.15s ease-out;
}

/* ========== 侧面板 ========== */
.side-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    min-width: 280px;
    max-width: 320px;
    animation: fadeInRight 0.6s ease-out 0.2s both;
}

/* ========== 控制面板 ========== */
.control-panel {
    background: linear-gradient(145deg, rgba(15, 52, 96, 0.8), rgba(22, 33, 62, 0.9));
    border: 1px solid rgba(255, 215, 0, 0.15);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.control-panel h3 {
    font-size: 0.85rem;
    color: var(--accent-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-weight: 600;
}

.control-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.control-group:last-of-type {
    border-bottom: none;
}

.control-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 50px;
}

.control-buttons {
    display: flex;
    gap: 6px;
}

/* ========== 按钮样式 ========== */
.btn {
    border: none;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: opacity 0.2s;
}

.btn:hover::after {
    opacity: 1;
}

.btn-rotate {
    background: linear-gradient(135deg, var(--accent-warm), #d35400);
    color: white;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    min-width: 40px;
}

.btn-rotate:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(230, 126, 34, 0.4);
}

.btn-rotate:active {
    transform: translateY(0);
}

.btn-action {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.8rem;
    border: 1px solid rgba(255, 215, 0, 0.2);
    width: 100%;
}

.btn-action:hover {
    border-color: var(--accent-gold);
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.15);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.action-buttons .btn-action {
    flex: 1;
}

/* ========== 直径和值面板 ========== */
.sums-panel {
    background: linear-gradient(145deg, rgba(15, 52, 96, 0.8), rgba(22, 33, 62, 0.9));
    border: 1px solid rgba(255, 215, 0, 0.15);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.sums-panel h3 {
    font-size: 0.85rem;
    color: var(--accent-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-weight: 600;
}

.sums-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
}

.sum-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 6px 4px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.sum-correct {
    background: rgba(46, 204, 113, 0.15);
    border: 1px solid rgba(46, 204, 113, 0.3);
}

.sum-wrong {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.2);
}

.sum-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.sum-positions {
    font-size: 0.65rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

.sum-value {
    font-family: 'Courier Prime', monospace;
    font-size: 1.1rem;
    font-weight: 700;
}

.sum-correct .sum-value {
    color: var(--accent-green);
}

.sum-wrong .sum-value {
    color: var(--accent-red);
}

.sum-summary {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ========== 状态/胜利消息 ========== */
#game-status {
    min-height: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.win-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(46, 204, 113, 0.2));
    border-radius: var(--border-radius);
    border: 1px solid var(--accent-gold);
    animation: winPulse 1.5s ease-in-out infinite;
}

.win-icon {
    font-size: 2rem;
    animation: bounce 0.6s ease infinite alternate;
}

.win-text {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-gold);
}

.win-moves {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ========== 规则弹窗 ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(4px);
}

.modal-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: linear-gradient(145deg, var(--bg-secondary), var(--bg-primary));
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.show .modal-content {
    transform: scale(1);
}

.modal-content h2 {
    color: var(--accent-gold);
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
}

.modal-content p,
.modal-content li {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.modal-content ul {
    padding-left: var(--spacing-lg);
}

.modal-content .close-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}

.modal-content .close-btn:hover {
    color: var(--text-primary);
}

/* ========== 彩纸画布 ========== */
#confetti-canvas {
    position: fixed;
    inset: 0;
    z-index: 999;
    pointer-events: none;
    display: none;
}

/* ========== 动画 ========== */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes winPulse {
    0%, 100% { box-shadow: 0 0 10px rgba(255, 215, 0, 0.2); }
    50% { box-shadow: 0 0 25px rgba(255, 215, 0, 0.4); }
}

@keyframes bounce {
    from { transform: translateY(0); }
    to { transform: translateY(-8px); }
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-md);
    }

    .header h1 {
        font-size: 1.6rem;
    }

    .game-layout {
        flex-direction: column;
        align-items: center;
    }

    .side-panel {
        min-width: unset;
        max-width: 100%;
        width: 100%;
    }

    .puzzle-container svg {
        width: 100%;
        max-width: 400px;
    }

    .sums-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .control-group {
        flex-wrap: wrap;
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.3rem;
        letter-spacing: 1px;
    }

    .sums-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .puzzle-container svg {
        max-width: 320px;
    }
}

.zoom-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    background: rgba(22, 33, 62, 0.7);
    border: 1px solid rgba(255, 215, 0, 0.2);
    padding: 6px 16px;
    border-radius: 20px;
    backdrop-filter: blur(5px);
    width: max-content;
    margin-left: auto;
    margin-right: auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.zoom-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-right: 4px;
    font-weight: 500;
}

.btn-zoom-opt {
    background: transparent;
    border: 1px solid rgba(255, 215, 0, 0.15);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.btn-zoom-opt:hover {
    color: var(--accent-gold);
    border-color: var(--accent-gold);
    background: rgba(255, 255, 255, 0.05);
}

.btn-zoom-opt.active {
    color: #1a1a2e;
    background: var(--accent-gold);
    border-color: var(--accent-gold);
    font-weight: bold;
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.4);
}