/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --bg-color: #1a1a2e;
    --bg-light: #16213e;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

#app {
    min-height: 100vh;
}

/* 屏幕切换 */
.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);
    }
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
}

/* 开始界面 */
.game-title {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary-color), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.3);
}

.game-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.instructions {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 2rem;
    text-align: left;
}

.instructions h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.instructions p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

/* 按钮 */
.btn {
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    background: var(--primary-color);
}

.btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn:active {
    transform: scale(0.95);
}

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

.btn-secondary {
    background: #6b7280;
}

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

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* 准备阶段 */
.prep-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.prep-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 12px;
}

.prep-header h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.budget-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.2rem;
}

.budget-amount {
    color: var(--success-color);
    font-weight: bold;
    font-size: 1.5rem;
}

.prep-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

.shop-section {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1.5rem;
}

.shop-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.item-card {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 1rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.item-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.item-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.item-price {
    color: var(--warning-color);
    font-weight: bold;
}

.item-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.item-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-quantity {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quantity-btn {
    background: var(--primary-color);
    border: none;
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.quantity-btn:hover {
    background: var(--primary-dark);
}

.quantity-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.quantity-display {
    min-width: 30px;
    text-align: center;
    font-weight: 600;
}

/* 购物车 */
.cart-section {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1.5rem;
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    display: flex;
    flex-direction: column;
}

.cart-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.empty-cart {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem 0;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.cart-item-details {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.cart-item-subtotal {
    color: var(--warning-color);
    font-weight: 600;
}

.cart-summary {
    border-top: 2px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.cart-total span:last-child {
    color: var(--warning-color);
}

/* 生存阶段 */
.survival-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.survival-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 12px;
}

.day-counter {
    font-size: 1.5rem;
    font-weight: 600;
}

.day-counter span:nth-child(2) {
    color: var(--primary-color);
    font-size: 2rem;
    margin: 0 0.3rem;
}

.status-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.status-item {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1rem;
}

.status-item label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.progress-bar {
    background: rgba(255, 255, 255, 0.1);
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--success-color);
    transition: width 0.5s ease, background 0.5s ease;
}

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

.progress-fill.danger {
    background: var(--danger-color);
}

.status-item span:last-child {
    font-weight: 600;
    color: var(--success-color);
}

/* 事件区 */
.event-section {
    margin-bottom: 2rem;
    min-height: 200px;
}

.event-placeholder {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    color: var(--text-secondary);
}

.event-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 2rem;
    animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.event-card.hidden {
    display: none;
}

.event-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.event-card h3 {
    color: var(--warning-color);
    text-align: center;
    margin-bottom: 1rem;
}

.event-card p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.event-choices {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 物资库存 */
.inventory-section {
    margin-bottom: 2rem;
}

.inventory-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.inventory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1.5rem;
}

.inventory-item {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.inventory-item:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.12);
}

.inventory-item-name {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.inventory-item-quantity {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* 行动区 */
.actions-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.btn-action {
    padding: 1.5rem;
    font-size: 1.1rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 2px solid var(--primary-color);
    transition: all 0.3s ease;
}

.btn-action:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* 游戏结束界面 */
.gameover-container {
    max-width: 600px;
}

.gameover-container h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.gameover-container h1.victory {
    color: var(--success-color);
}

.gameover-container h1.defeat {
    color: var(--danger-color);
}

.gameover-container p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.gameover-stats {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-row:last-child {
    border-bottom: none;
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    animation: scaleIn 0.3s ease;
}

.modal-content h3 {
    color: var(--warning-color);
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* 工具类 */
.hidden {
    display: none !important;
}

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

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

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .prep-content {
        grid-template-columns: 1fr;
    }

    .cart-section {
        position: static;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .game-title {
        font-size: 2rem;
    }

    .container {
        padding: 1rem;
    }

    .prep-container,
    .survival-container {
        padding: 1rem;
    }

    .prep-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .survival-header {
        flex-direction: column;
        gap: 1rem;
    }

    .status-panel {
        grid-template-columns: 1fr 1fr;
    }

    .items-grid {
        grid-template-columns: 1fr;
    }

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

    .actions-grid {
        grid-template-columns: 1fr 1fr;
    }

    .modal-content {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .game-title {
        font-size: 1.5rem;
    }

    .status-panel {
        grid-template-columns: 1fr;
    }

    .inventory-grid {
        grid-template-columns: 1fr;
    }

    .actions-grid {
        grid-template-columns: 1fr;
    }

    .btn-large {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }

    .event-choices {
        flex-direction: column;
    }

    .modal-buttons {
        flex-direction: column;
    }
}

/* 横屏移动设备 */
@media (max-height: 500px) and (orientation: landscape) {
    .game-title {
        font-size: 1.5rem;
    }

    .container {
        padding: 0.5rem;
    }

    .prep-container,
    .survival-container {
        padding: 0.5rem;
    }

    .items-grid,
    .inventory-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .status-panel {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
    }

    .status-item {
        padding: 0.5rem;
    }

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

    .btn-action {
        padding: 0.75rem;
    }
}