/* ========== CSS 变量 ========== */
:root {
    --primary: #c9a84c;
    --primary-dark: #a8862e;
    --primary-light: #e8d5a0;
    --bg-dark: #1a1a2e;
    --bg-medium: #16213e;
    --bg-light: #1f2a44;
    --bg-card: #243447;
    --text-primary: #e8d5a0;
    --text-secondary: #a0a8b8;
    --text-muted: #6b7280;
    --success: #4caf50;
    --error: #f44336;
    --warning: #ff9800;
    --border: #3a4a5f;
    --border-light: #4a5a6f;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(201, 168, 76, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(201, 168, 76, 0.03) 0%, transparent 50%);
}

/* ========== Header ========== */
.header {
    background: var(--bg-medium);
    border-bottom: 2px solid var(--primary);
    padding: 12px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.4em;
    font-weight: bold;
    color: var(--primary);
}

.logo-icon {
    font-size: 1.6em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-size: 0.95em;
}

.nav-link:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.nav-link.active {
    background: var(--primary);
    color: var(--bg-dark);
    font-weight: bold;
}

.nav-user {
    color: var(--primary-light);
    padding: 0 10px;
    font-weight: bold;
}

.logout-link {
    color: var(--error);
}

.logout-link:hover {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error);
}

/* ========== Main Content ========== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.page-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.section-title {
    font-size: 1.3em;
    color: var(--primary);
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

/* ========== 资源栏 ========== */
.resource-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    background: var(--bg-medium);
    padding: 15px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.resource-item {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-card);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    min-width: 120px;
}

.resource-icon {
    font-size: 1.2em;
}

.resource-name {
    color: var(--text-secondary);
    font-size: 0.85em;
}

.resource-amount {
    color: var(--primary);
    font-weight: bold;
    font-size: 1.1em;
}

.resource-rate {
    color: var(--success);
    font-size: 0.75em;
}

/* ========== 城市布局 ========== */
.city-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 20px;
}

.city-map {
    background: var(--bg-medium);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.map-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}

.map-cell {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    background: var(--bg-light);
    cursor: pointer;
    transition: var(--transition);
    padding: 5px;
    text-align: center;
}

.map-cell:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.map-cell.empty {
    border-style: dashed;
    border-color: var(--border-light);
}

.map-cell.empty:hover {
    border-color: var(--success);
    background: rgba(76, 175, 80, 0.1);
}

.map-cell.occupied {
    border-color: var(--primary);
    background: var(--bg-card);
}

.map-cell.selected {
    border-color: var(--success);
    box-shadow: 0 0 10px rgba(76, 175, 80, 0.5);
}

.building-emoji {
    font-size: 2em;
}

.building-name {
    font-size: 0.7em;
    color: var(--text-secondary);
}

.building-level {
    font-size: 0.65em;
    color: var(--primary);
}

.empty-text {
    color: var(--text-muted);
    font-size: 0.8em;
}

/* ========== 建造菜单 ========== */
.build-menu {
    background: var(--bg-medium);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    max-height: 600px;
    overflow-y: auto;
}

.building-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.building-card {
    background: var(--bg-card);
    padding: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.building-card:hover {
    border-color: var(--primary);
}

.building-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.building-card-emoji {
    font-size: 1.5em;
}

.building-card-name {
    font-weight: bold;
    color: var(--primary);
}

.building-card-cost {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.cost-item {
    font-size: 0.75em;
    color: var(--text-secondary);
    background: var(--bg-light);
    padding: 3px 6px;
    border-radius: 3px;
}

/* ========== 按钮 ========== */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.95em;
    font-family: inherit;
    transition: var(--transition);
    font-weight: bold;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-build {
    background: var(--primary);
    color: var(--bg-dark);
    width: 100%;
}

.btn-build:hover {
    background: var(--primary-light);
}

.btn-collect {
    background: var(--success);
    color: white;
    width: 100%;
    margin-top: 15px;
}

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

.btn-battle {
    background: var(--error);
    color: white;
    width: 100%;
}

.btn-battle:hover {
    background: #d32f2f;
}

.btn-research {
    background: var(--primary);
    color: var(--bg-dark);
    width: 100%;
}

.btn-login {
    background: var(--primary);
    color: var(--bg-dark);
    width: 100%;
    font-size: 1.1em;
    padding: 12px;
}

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

.btn-sm {
    padding: 5px 10px;
    font-size: 0.8em;
}

/* ========== 军事页面 ========== */
.military-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.recruit-section,
.army-section,
.battle-section,
.battle-history {
    background: var(--bg-medium);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.unit-cards {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.unit-card {
    background: var(--bg-card);
    padding: 15px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.unit-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.unit-emoji {
    font-size: 1.8em;
}

.unit-name {
    font-weight: bold;
    color: var(--primary);
    font-size: 1.1em;
}

.unit-stats {
    display: flex;
    gap: 10px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.85em;
}

.unit-cost {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.unit-recruit-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.recruit-input {
    width: 60px;
    padding: 8px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9em;
}

.army-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.army-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    padding: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.army-emoji {
    font-size: 1.5em;
}

.army-name {
    font-weight: bold;
    color: var(--primary);
}

.army-count {
    color: var(--success);
    font-weight: bold;
}

.army-stats {
    color: var(--text-secondary);
    font-size: 0.85em;
    margin-left: auto;
}

.enemy-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.enemy-card {
    background: var(--bg-card);
    padding: 15px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.enemy-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.enemy-emoji {
    font-size: 1.8em;
}

.enemy-name {
    font-weight: bold;
    color: var(--error);
}

.enemy-strength {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.enemy-reward {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.reward-item {
    font-size: 0.75em;
    color: var(--success);
    background: var(--bg-light);
    padding: 3px 6px;
    border-radius: 3px;
}

.battle-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 300px;
    overflow-y: auto;
}

.battle-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.battle-victory {
    background: rgba(76, 175, 80, 0.1);
    border-color: var(--success);
}

.battle-defeat {
    background: rgba(244, 67, 54, 0.1);
    border-color: var(--error);
}

.battle-result-icon {
    font-size: 1.2em;
}

.battle-enemy {
    font-weight: bold;
}

.battle-strength {
    color: var(--text-secondary);
    font-size: 0.85em;
}

.battle-time {
    color: var(--text-muted);
    font-size: 0.8em;
    margin-left: auto;
}

/* ========== 科技页面 ========== */
.research-layout {
    background: var(--bg-medium);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.tech-card {
    background: var(--bg-card);
    padding: 15px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.tech-card:hover {
    border-color: var(--primary);
}

.tech-researched {
    border-color: var(--success);
    background: rgba(76, 175, 80, 0.05);
}

.tech-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.tech-emoji {
    font-size: 1.5em;
}

.tech-name {
    font-weight: bold;
    color: var(--primary);
}

.tech-effect {
    color: var(--text-secondary);
    font-size: 0.85em;
    margin-bottom: 8px;
}

.tech-cost {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.tech-status {
    color: var(--success);
    font-weight: bold;
    text-align: center;
    padding: 10px;
}

/* ========== 登录页面 ========== */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
}

.login-container {
    background: var(--bg-medium);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 25px;
}

.login-icon {
    font-size: 3em;
    display: block;
    margin-bottom: 10px;
}

.login-header h1 {
    color: var(--primary);
    margin-bottom: 5px;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.9em;
}

.login-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.login-tab {
    flex: 1;
    padding: 10px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
}

.login-tab.active {
    background: var(--primary);
    color: var(--bg-dark);
    font-weight: bold;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    color: var(--text-secondary);
    font-size: 0.9em;
}

.form-group input {
    padding: 10px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1em;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.admin-hint {
    margin-top: 20px;
    padding: 15px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    text-align: center;
}

.admin-hint p {
    color: var(--text-muted);
    font-size: 0.85em;
    margin: 3px 0;
}

/* ========== 管理后台 ========== */
.admin-header {
    background: var(--bg-medium);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.admin-title {
    color: var(--primary);
    margin-bottom: 15px;
}

.admin-stats {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.admin-stat {
    background: var(--bg-card);
    padding: 15px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    text-align: center;
    min-width: 120px;
}

.stat-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.8em;
    margin-bottom: 5px;
}

.stat-value {
    color: var(--primary);
    font-size: 1.5em;
    font-weight: bold;
}

.admin-users {
    background: var(--bg-medium);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.admin-table-container {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9em;
}

.admin-table th,
.admin-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.admin-table th {
    background: var(--bg-light);
    color: var(--primary);
    font-weight: bold;
}

.admin-table tr:hover {
    background: var(--bg-light);
}

.role-badge {
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 0.8em;
}

.role-admin {
    background: rgba(201, 168, 76, 0.2);
    color: var(--primary);
}

.role-user {
    background: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

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

/* ========== Toast ========== */
#toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 15px 20px;
    border-radius: var(--radius-md);
    color: white;
    font-weight: bold;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    min-width: 250px;
    max-width: 400px;
}

.toast-success {
    background: var(--success);
}

.toast-error {
    background: var(--error);
}

.toast-warning {
    background: var(--warning);
}

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

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

/* ========== Flash 消息隐藏 ========== */
.flash-message {
    display: none;
}

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

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav {
        width: 100%;
        justify-content: flex-start;
    }
    
    .resource-bar {
        gap: 6px;
    }
    
    .resource-item {
        min-width: 90px;
        padding: 6px 8px;
    }
    
    .map-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .login-container {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .map-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .resource-item {
        min-width: 70px;
        font-size: 0.8em;
    }
    
    .admin-stats {
        flex-direction: column;
    }
}