/* ================================
   CSS RESET & VARIABLES
   ================================ */

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

:root {
    /* Color Palette - Cyberpunk meets 90s Nostalgia */
    --color-primary: #00ffff;
    --color-primary-dark: #00cccc;
    --color-primary-glow: rgba(0, 255, 255, 0.5);
    
    --color-secondary: #ff00ff;
    --color-secondary-glow: rgba(255, 0, 255, 0.5);
    
    --color-accent: #ffff00;
    --color-accent-glow: rgba(255, 255, 0, 0.4);
    
    --color-danger: #ff3366;
    --color-success: #00ff88;
    --color-warning: #ffaa00;
    
    --color-bg-dark: #0a0e27;
    --color-bg-darker: #050818;
    --color-bg-panel: rgba(15, 23, 42, 0.85);
    --color-bg-surface: rgba(30, 41, 59, 0.6);
    
    --color-text-primary: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-dim: #64748b;
    
    --color-border: rgba(148, 163, 184, 0.3);
    --color-border-bright: rgba(0, 255, 255, 0.5);
    
    /* Typography */
    --font-primary: 'Noto Sans SC', sans-serif;
    --font-display: 'Orbitron', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Effects */
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-elevated: 0 12px 48px rgba(0, 0, 0, 0.6);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
}

body {
    font-family: var(--font-primary);
    background: var(--color-bg-darker);
    color: var(--color-text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ================================
   BACKGROUND EFFECTS
   ================================ */

.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridScroll 20s linear infinite;
}

@keyframes gridScroll {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

.glow-orbs {
    position: absolute;
    width: 100%;
    height: 100%;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: orbFloat 15s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-primary), transparent);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-secondary), transparent);
    bottom: -250px;
    right: -250px;
    animation-delay: 5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--color-accent), transparent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -50px) scale(1.1); }
    66% { transform: translate(-50px, 50px) scale(0.9); }
}

/* ================================
   GAME CONTAINER & SCREENS
   ================================ */

.game-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding: var(--spacing-lg);
}

.screen {
    display: none;
    animation: fadeIn 0.5s ease;
}

.screen.active {
    display: block;
}

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

/* ================================
   START SCREEN
   ================================ */

#startScreen.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 3rem);
}

.title-section {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.game-title {
    font-family: var(--font-display);
    margin-bottom: var(--spacing-lg);
}

.title-main {
    display: block;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px var(--color-primary-glow);
    animation: titlePulse 3s ease-in-out infinite;
    letter-spacing: 0.05em;
}

@keyframes titlePulse {
    0%, 100% { transform: scale(1); filter: brightness(1); }
    50% { transform: scale(1.02); filter: brightness(1.2); }
}

.title-sub {
    display: block;
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-top: var(--spacing-sm);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.title-decoration {
    width: 200px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    margin: var(--spacing-lg) auto;
    box-shadow: 0 0 10px var(--color-primary-glow);
}

.game-tagline {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 300;
}

.start-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    min-width: 350px;
    margin-bottom: var(--spacing-xl);
}

.start-footer {
    color: var(--color-text-dim);
    font-size: 0.875rem;
    text-align: center;
}

/* ================================
   BUTTONS
   ================================ */

.menu-btn {
    background: var(--color-bg-panel);
    border: 2px solid var(--color-border);
    color: var(--color-text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.125rem;
    font-family: var(--font-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.menu-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.menu-btn:hover::before {
    left: 100%;
}

.menu-btn:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 20px var(--color-primary-glow);
    transform: translateY(-2px);
}

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

.menu-btn.primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-color: var(--color-primary);
    color: var(--color-bg-darker);
    font-weight: 700;
    box-shadow: var(--shadow-glow);
}

.menu-btn.primary:hover {
    box-shadow: 0 0 30px var(--color-primary-glow);
    filter: brightness(1.2);
}

.menu-btn.danger {
    border-color: var(--color-danger);
}

.menu-btn.danger:hover {
    background: var(--color-danger);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.5);
}

.btn-icon {
    font-size: 1.5rem;
}

.btn-text {
    flex: 1;
}

/* ================================
   SETUP SCREEN
   ================================ */

.setup-container,
.ranking-container,
.about-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    background: var(--color-bg-panel);
    border: 2px solid var(--color-border-bright);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-elevated);
}

.screen-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.setup-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.form-group label {
    display: block;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.form-group input[type="text"] {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all var(--transition-normal);
}

.form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.radio-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.radio-option:hover {
    border-color: var(--color-primary);
    background: rgba(0, 255, 255, 0.05);
}

.radio-option input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.radio-option span {
    flex: 1;
    font-size: 1rem;
}

.radio-option span small {
    display: block;
    color: var(--color-text-dim);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* Story Background Styles */
.story-background {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.05), rgba(255, 0, 255, 0.05));
    border: 2px solid var(--color-border-bright);
    border-radius: var(--border-radius-lg);
}

.story-intro {
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.story-intro p {
    margin-bottom: var(--spacing-md);
}

.story-highlight {
    font-size: 1.125rem;
    color: var(--color-text-primary);
    font-weight: 500;
}

.story-final {
    font-style: italic;
    color: var(--color-text-primary);
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.money-highlight {
    color: var(--color-accent);
    font-weight: 700;
    font-size: 1.1em;
}

.debt-highlight {
    color: var(--color-danger);
    font-weight: 700;
    font-size: 1.1em;
}

.danger-text {
    color: var(--color-danger);
}

.success-text {
    color: var(--color-success);
}

.game-objectives {
    padding: var(--spacing-md);
    background: var(--color-bg-surface);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.game-objectives h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.game-objectives ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.game-objectives li {
    padding: var(--spacing-sm) 0;
    color: var(--color-text-secondary);
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.game-objectives li:last-child {
    border-bottom: none;
}
.btn-group {
    display: flex;
    gap: var(--spacing-md);
}

.btn-group .menu-btn {
    flex: 1;
}

/* ================================
   GAME SCREEN
   ================================ */

#gameScreen.active {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 3rem);
}

.status-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    background: var(--color-bg-panel);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.status-item {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm);
    background: var(--color-bg-surface);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.status-item.highlight {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(255, 0, 255, 0.1));
    border-color: var(--color-primary);
}

.status-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-value {
    font-size: 1.125rem;
    font-weight: 700;
    font-family: var(--font-display);
    color: var(--color-primary);
}

.game-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    overflow: hidden;
    min-height: 0;
        /* 防止内容撑开容器导致主屏幕滚动 */
}

.panel {
    background: var(--color-bg-panel);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
        /* 减小一点 padding 腾出空间 */
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
        /* 很重要：允许 grid 单元收缩 */
}

.panel-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--color-primary);
}

.panel-header-with-badge {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.badge {
    padding: 2px 8px;
    background: var(--color-success);
    color: var(--color-bg-darker);
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge.info {
    background: var(--color-primary);
}

.badge.warning {
    background: var(--color-warning);
}

.list-header {
    display: grid;
    grid-template-columns: 1fr 110px 120px;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-bg-surface);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.list-header.warehouse {
    grid-template-columns: 1fr 100px 100px 100px;
}
/* Horizontal Locations Row */
.locations-row {
    display: flex;
    justify-content: space-between;
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-md);
        background: var(--color-bg-panel);
        padding: var(--spacing-sm);
        border-radius: var(--border-radius);
        border: 2px solid var(--color-border);
}

.location-btn {
    flex: 1;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    padding: var(--spacing-sm) var(--spacing-xs);
        border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
}

.location-btn:hover {
    border-color: var(--color-primary);
    background: rgba(0, 255, 255, 0.1);
}

.location-btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-bg-darker);
    border-color: var(--color-primary);
    font-weight: 700;
    box-shadow: 0 0 10px var(--color-primary-glow);
}

/* Market Panel */
.market-panel {
    overflow: hidden;
}

.market-items,
.warehouse-items {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding-right: 4px;
}

/* Custom Scrollbar for panels */
.market-items::-webkit-scrollbar,
.warehouse-items::-webkit-scrollbar,
.locations-grid::-webkit-scrollbar {
    width: 4px;
}

.market-items::-webkit-scrollbar-thumb,
.warehouse-items::-webkit-scrollbar-thumb,
.locations-grid::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

.market-item,
.list-header {
    display: grid;
    grid-template-columns: 1fr 120px 120px;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

.warehouse-item,
.list-header.warehouse {
    display: grid;
    grid-template-columns: 1fr 100px 100px 100px;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

.market-item,
.warehouse-item {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    align-items: center;
    transition: all var(--transition-normal);
}

.market-item:hover,
.warehouse-item:hover {
    border-color: var(--color-primary);
    background: rgba(0, 255, 255, 0.05);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.1);
}

.item-name {
    font-weight: 600;
    font-size: 1rem;
}

.item-price {
    color: var(--color-accent);
    font-weight: 700;
    font-family: var(--font-display);
}

.item-owned {
    color: var(--color-text-secondary);
}

.item-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.item-btn {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg-panel);
    color: var(--color-text-primary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.item-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-bg-darker);
    transform: scale(1.05);
}

.item-btn.sell-btn:hover {
    border-color: var(--color-secondary);
    background: var(--color-secondary);
}

.item-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    border-color: rgba(255, 255, 255, 0.1);
        background: rgba(0, 0, 0, 0.3);
    color: var(--color-text-dim);
    filter: grayscale(1);
        transform: none !important;
        box-shadow: none !important;
}

.item-btn:disabled:hover {
    background: rgba(0, 0, 0, 0.3);
        border-color: rgba(255, 255, 255, 0.1);
}

.text-error {
    color: var(--color-danger);
}

.profit-tag {
    font-size: 0.7rem;
    font-weight: 700;
}

.item-subtext {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-dim);
}

/* Bottom Bar Enhanced (Single Row Toolbar) */
.bottom-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding: 6px var(--spacing-md);
    background: var(--color-bg-panel);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    flex-wrap: nowrap;
}
.actions-group {
    display: flex;
    gap: 4px;
    flex: 2;
    min-width: 0;
}

.system-group {
    display: flex;
    gap: 4px;
    flex: 1;
    justify-content: flex-end;
}
.bottom-btn {
    flex: 1;
    min-width: 0;
        padding: 8px 4px;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 0.8rem;
        font-weight: 600;
    transition: all var(--transition-normal);
    display: flex;
        align-items: center;
        justify-content: center;
        gap: 4px;
        white-space: nowrap;
}

.bottom-btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 255, 0.2);
}

.bottom-btn.danger:hover {
    border-color: var(--color-danger);
    background: var(--color-danger);
}

.bottom-btn.action-btn {
    background: rgba(15, 23, 42, 0.5);
}

.bottom-btn.action-btn:hover {
    background: rgba(0, 255, 255, 0.1);
}
/* Responsive Bottom Bar */
@media screen and (max-width: 1024px) {
    .bottom-bar {
        padding: 4px var(--spacing-sm);
        gap: 2px;
    }

    .bottom-btn {
        padding: 6px 2px;
        font-size: 0.7rem;
        gap: 2px;
    }

    .actions-group,
    .system-group {
        gap: 2px;
    }
}
/* ================================
   RANKING SCREEN
   ================================ */

.ranking-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    max-height: 500px;
    overflow-y: auto;
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: all var(--transition-normal);
}

.ranking-item:hover {
    border-color: var(--color-primary);
    transform: translateX(5px);
}

.ranking-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    min-width: 50px;
    text-align: center;
}

.ranking-item:nth-child(1) .ranking-number {
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.ranking-item:nth-child(2) .ranking-number {
    color: #c0c0c0;
}

.ranking-item:nth-child(3) .ranking-number {
    color: #cd7f32;
}

.ranking-info {
    flex: 1;
}

.ranking-name {
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.ranking-details {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.ranking-money {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

/* ================================
   ABOUT SCREEN
   ================================ */

.about-content {
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.about-content h3 {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
}

.about-content h4 {
    color: var(--color-secondary);
    font-size: 1.25rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.about-content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

.about-content ul {
    list-style: none;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.about-content li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.about-content li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* ================================
   MODAL SYSTEM
   ================================ */

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--color-bg-panel);
    border: 2px solid var(--color-border-bright);
    border-radius: var(--border-radius-lg);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: var(--shadow-elevated);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    padding: var(--spacing-lg);
    background: var(--color-bg-surface);
    border-bottom: 2px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-danger);
    transform: rotate(90deg);
}

.modal-body {
    padding: var(--spacing-lg);
    max-height: 50vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--spacing-lg);
    background: var(--color-bg-surface);
    border-top: 2px solid var(--color-border);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* ================================
   NOTIFICATION SYSTEM
   ================================ */

.notification-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.notification {
    background: var(--color-bg-panel);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md) var(--spacing-lg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-card);
    animation: slideInRight 0.3s ease;
    position: relative;
    overflow: hidden;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

.notification::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary);
}

.notification.success::before {
    background: var(--color-success);
}

.notification.warning::before {
    background: var(--color-warning);
}

.notification.error::before {
    background: var(--color-danger);
}

.notification-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.notification-message {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ================================
   SCROLLBAR STYLING
   ================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-surface);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
    transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */

/* 强制保持双栏布局，或者在极小屏幕下再切换 */
@media (max-width: 900px) {
    .game-content {
        grid-template-columns: 1fr;
        overflow-y: auto;
    }
                .bottom-bar {
                    flex-direction: column;
                    gap: var(--spacing-sm);
    .actions-group,
        .system-group {
        width: 100%;
        justify-content: center;
    }
}

/* ================================
   UTILITY CLASSES
   ================================ */

.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

.glow-text {
    text-shadow: 0 0 10px currentColor;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}