/* 选课助手 - 暖色温和配色 */

:root {
    /* 暖色主色调 */
    --primary-50: #fef7ed;
    --primary-100: #fdedd3;
    --primary-200: #fbd8a5;
    --primary-300: #f8bd6d;
    --primary-400: #f59e42;
    --primary-500: #f2811d;
    --primary-600: #e36414;
    --primary-700: #bc4a13;
    --primary-800: #963c17;
    --primary-900: #7a3316;
    
    /* 温和辅助色 */
    --secondary-50: #fdf4f3;
    --secondary-100: #fce7e6;
    --secondary-200: #f9d4d2;
    --secondary-300: #f4b5b1;
    --secondary-400: #ec8983;
    --secondary-500: #e06156;
    --secondary-600: #cd4538;
    --secondary-700: #ab372a;
    --secondary-800: #8d3025;
    --secondary-900: #752d24;
    
    /* 中性暖色 */
    --neutral-50: #fafaf9;
    --neutral-100: #f5f5f4;
    --neutral-200: #e7e5e4;
    --neutral-300: #d6d3d1;
    --neutral-400: #a8a29e;
    --neutral-500: #78716c;
    --neutral-600: #57534e;
    --neutral-700: #44403c;
    --neutral-800: #292524;
    --neutral-900: #1c1917;
    
    /* 成功色 - 温和绿 */
    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    
    /* 警告色 - 温和橙 */
    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    
    /* 错误色 - 温和红 */
    --error-50: #fef2f2;
    --error-100: #fee2e2;
    --error-500: #ef4444;
    --error-600: #dc2626;
}

/* 基础样式 */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--neutral-800);
    background-color: var(--neutral-50);
    margin: 0;
    padding: 0;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--primary-500);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-600);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--secondary-500);
    color: white;
}

.btn-secondary:hover {
    background-color: var(--secondary-600);
}

.btn-success {
    background-color: var(--success-500);
    color: white;
}

.btn-success:hover {
    background-color: var(--success-600);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-300);
    color: var(--primary-600);
}

.btn-outline:hover {
    background-color: var(--primary-50);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* 表单元素 */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--neutral-300);
    border-radius: 0.5rem;
    background-color: white;
    color: var(--neutral-800);
    font-size: 0.875rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--neutral-700);
    font-size: 0.875rem;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

/* 卡片 */
.card {
    background-color: white;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    padding: 1.5rem;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
}

.card-header {
    border-bottom: 1px solid var(--neutral-200);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--neutral-800);
    margin: 0;
}

/* 导航 */
.navbar {
    background-color: white;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-600);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-link {
    color: var(--neutral-600);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-link:hover {
    color: var(--primary-600);
    background-color: var(--primary-50);
}

/* 表格 */
.table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    border-radius: 0.5rem;
    overflow: hidden;
}

.table th {
    background-color: var(--neutral-100);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--neutral-700);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    padding: 1rem;
    border-top: 1px solid var(--neutral-200);
    color: var(--neutral-800);
}

.table tbody tr:hover {
    background-color: var(--neutral-50);
}

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-success {
    background-color: var(--success-100);
    color: var(--success-700);
}

.badge-warning {
    background-color: var(--warning-100);
    color: var(--warning-600);
}

.badge-error {
    background-color: var(--error-100);
    color: var(--error-600);
}

.badge-primary {
    background-color: var(--primary-100);
    color: var(--primary-700);
}

.badge-secondary {
    background-color: var(--secondary-100);
    color: var(--secondary-700);
}

/* 警告框 */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.alert-success {
    background-color: var(--success-50);
    color: var(--success-700);
    border: 1px solid var(--success-200);
}

.alert-warning {
    background-color: var(--warning-50);
    color: var(--warning-700);
    border: 1px solid var(--warning-200);
}

.alert-error {
    background-color: var(--error-50);
    color: var(--error-700);
    border: 1px solid var(--error-200);
}

.alert-info {
    background-color: var(--primary-50);
    color: var(--primary-700);
    border: 1px solid var(--primary-200);
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }
}

/* 弹性布局 */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

/* 间距 */
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }

.m-4 { margin: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }

/* 文本 */
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

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

.text-primary { color: var(--primary-600); }
.text-secondary { color: var(--secondary-600); }
.text-success { color: var(--success-600); }
.text-warning { color: var(--warning-600); }
.text-error { color: var(--error-600); }
.text-neutral { color: var(--neutral-600); }

/* 背景 */
.bg-primary { background-color: var(--primary-500); }
.bg-primary-light { background-color: var(--primary-100); }
.bg-white { background-color: white; }

/* 边框 */
.border { border: 1px solid var(--neutral-300); }
.border-primary { border-color: var(--primary-300); }
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-full { border-radius: 9999px; }

/* 阴影 */
.shadow-sm {
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.shadow {
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.shadow-lg {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 过渡动画 */
.transition {
    transition: all 0.2s ease;
}

/* 隐藏元素 */
.hidden {
    display: none;
}

/* 加载动画 */
.animate-spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 渐入渐出 */
.fade-enter-active, .fade-leave-active {
    transition: opacity 0.3s ease;
}

.fade-enter-from, .fade-leave-to {
    opacity: 0;
}

/* 响应式 */
@media (max-width: 640px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

/* 登录页面特殊样式 */
.login-bg {
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--secondary-400) 100%);
    min-height: 100vh;
}

.login-card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
}

.login-icon {
    width: 4rem;
    height: 4rem;
    background-color: var(--primary-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

/* 功能卡片 */
.feature-card {
    cursor: pointer;
    transition: all 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px -8px rgba(0, 0, 0, 0.15);
}

.feature-card.active {
    border: 2px solid var(--primary-400);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.feature-icon.sports {
    background-color: var(--success-100);
    color: var(--success-600);
}

.feature-icon.general {
    background-color: var(--secondary-100);
    color: var(--secondary-600);
}

.feature-icon.major {
    background-color: var(--warning-100);
    color: var(--warning-600);
}

.feature-icon.tasks {
    background-color: var(--primary-100);
    color: var(--primary-600);
}

/* 进度条 */
.progress {
    width: 100%;
    height: 0.5rem;
    background-color: var(--neutral-200);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-500);
    transition: width 0.3s ease;
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

.modal-content {
    background: white;
    border-radius: 0.75rem;
    padding: 1.5rem;
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
}

/* 复选框样式 */
.checkbox {
    appearance: none;
    width: 1rem;
    height: 1rem;
    border: 1px solid var(--neutral-400);
    border-radius: 0.25rem;
    background-color: white;
    cursor: pointer;
    position: relative;
}

.checkbox:checked {
    background-color: var(--primary-500);
    border-color: var(--primary-500);
}

.checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip-text {
    visibility: hidden;
    background-color: var(--neutral-800);
    color: white;
    text-align: center;
    border-radius: 0.25rem;
    padding: 0.5rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.75rem;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* ==================== 响应式布局 - 手机平板适配 ==================== */

/* 平板适配 (768px - 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    
    .top-grid-2 {
        grid-template-columns: 1fr !important;
    }
}

/* 手机适配 (小于768px) */
@media (max-width: 768px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .navbar {
        padding: 0.75rem 1rem;
        flex-wrap: wrap;
    }
    
    .navbar-brand {
        font-size: 1rem;
    }
    
    .navbar-nav {
        gap: 8px !important;
        flex-wrap: wrap;
        justify-content: flex-end;
    }
    
    .credits-badge {
        font-size: 11px !important;
        padding: 4px 8px !important;
    }
    
    .grid-cols-4 {
        grid-template-columns: 1fr !important;
    }
    
    .card {
        padding: 1rem;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    .feature-card {
        padding: 0.75rem;
    }
    
    .feature-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.25rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .table {
        font-size: 0.75rem;
    }
    
    .table th, .table td {
        padding: 0.5rem 0.25rem;
    }
    
    /* 隐藏部分表格列 */
    .table .hide-mobile {
        display: none;
    }
    
    .form-input, .form-select {
        padding: 0.5rem;
        font-size: 0.875rem;
    }
    
    .modal-content {
        width: 95vw !important;
        max-width: 95vw !important;
        padding: 1rem;
    }
    
    .flex.gap-4 {
        gap: 0.5rem !important;
        flex-wrap: wrap;
    }
    
    .text-xl {
        font-size: 1.125rem;
    }
    
    .text-lg {
        font-size: 1rem;
    }
    
    /* 底部操作栏响应式 */
    .bottom-actions {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .bottom-actions .flex {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* 超小屏幕 (小于480px) */
@media (max-width: 480px) {
    .navbar-brand span {
        display: none;
    }
    
    .navbar-brand i {
        font-size: 1.5rem;
    }
    
    .py-8 {
        padding-top: 1rem;
        padding-bottom: 1rem;
    }
    
    .mb-6 {
        margin-bottom: 1rem;
    }
    
    .gap-4 {
        gap: 0.5rem;
    }
}