/* ==================== 易算AI - 全局统一设计系统 ==================== */
/* 主题色: #1e9fff | 风格: 现代卡片式 | 适配: 多终端响应式 */

/* ==================== CSS变量 - 全局设计系统 ==================== */
:root {
    /* ===== 主色调 ===== */
    --primary: #1e9fff;
    --primary-hover: #4db3ff;
    --primary-active: #0084e8;
    --primary-light: #e6f4ff;
    --primary-ultra-light: #f0f8ff;
    --primary-dark: #0073d1;
    --primary-gradient: linear-gradient(135deg, #1e9fff 0%, #0073d1 100%);
    --primary-gradient-hover: linear-gradient(135deg, #4db3ff 0%, #1e9fff 100%);

    /* ===== 辅助色 ===== */
    --success: #52c41a;
    --success-light: #f0fdf4;
    --success-border: #bbf7d0;
    --warning: #faad14;
    --warning-light: #fefce8;
    --warning-border: #fde68a;
    --error: #ff4d4f;
    --error-light: #fff1f0;
    --error-border: #ffccc7;
    --info: #1e9fff;

    /* ===== 中性色 ===== */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* ===== 背景色 ===== */
    --bg-page: linear-gradient(180deg, #fefcfb 0%, #f7f3ee 100%);
    --bg-card: #ffffff;
    --bg-card-hover: linear-gradient(145deg, #ffffff 0%, #f9fafb 100%);
    --bg-input: linear-gradient(145deg, #ffffff, #fafbfc);
    --bg-input-hover: linear-gradient(145deg, #ffffff, #f9fafb);
    --bg-input-focus: linear-gradient(145deg, #ffffff, #eff6ff);

    /* ===== 文本色 ===== */
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    --text-white: #ffffff;
    --text-link: #2563eb;
    --text-disabled: #d1d5db;

    /* ===== 边框色 ===== */
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --border-focus: #93c5fd;
    --border-error: #ff4d4f;
    --border-success: #52c41a;

    /* ===== 字体系统 ===== */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Source Code Pro', monospace;

    /* ===== 字号 ===== */
    --text-xs: 11px;
    --text-sm: 12px;
    --text-base: 13px;
    --text-lg: 15px;
    --text-xl: 17px;
    --text-2xl: 20px;
    --text-3xl: 24px;
    --text-4xl: 30px;

    /* ===== 字重 ===== */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* ===== 行高 ===== */
    --leading-tight: 1.35;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;

    /* ===== 间距系统 ===== */
    --spacing-2xs: 2px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
    --spacing-4xl: 64px;

    /* ===== 圆角 ===== */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-3xl: 24px;
    --radius-full: 9999px;

    /* ===== 阴影系统 ===== */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-2xl: 0 30px 60px rgba(0, 0, 0, 0.12), 0 12px 24px rgba(0, 0, 0, 0.1);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-focus: 0 0 0 4px rgba(30, 159, 255, 0.12);
    --shadow-error: 0 0 0 4px rgba(255, 77, 79, 0.1);
    --shadow-success: 0 0 0 4px rgba(82, 196, 26, 0.1);

    /* ===== 过渡动画 ===== */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* ===== 断点 ===== */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;

    /* ===== Z-index层级 ===== */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-popover: 500;
    --z-tooltip: 600;
    --z-toast: 700;
}

/* ==================== 基础重置 ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ==================== 滚动条美化 ==================== */
/* 已迁移至 css-components/scrollbars.css（项目滚动条唯一权威源） */
/* 严禁在本文件或其他 CSS / 模板内联 <style> 中重新定义 ::-webkit-scrollbar* / scrollbar-width / scrollbar-color */

/* ==================== 现代化卡片组件 ==================== */
.modern-card {
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.modern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.modern-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: rgba(28, 159, 255, 0.2);
}

.modern-card:hover::before {
    opacity: 1;
}

/* 卡片头部 */
.card-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(135deg, rgba(248, 249, 250, 0.8) 0%, rgba(255, 255, 255, 0.8) 100%);
}

.card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    letter-spacing: -0.2px;
}

.card-title::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--primary-gradient);
    border-radius: var(--radius-xs);
    box-shadow: 0 2px 6px rgba(28, 159, 255, 0.3);
}

/* ==================== 现代化表单组件 ==================== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-label {
    display: block;
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    line-height: var(--leading-tight);
    letter-spacing: 0.2px;
}

.form-label.required::after {
    content: '*';
    color: var(--error);
    margin-left: 4px;
    vertical-align: super;
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
}

/* 输入框基础样式 */
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--text-lg);
    font-family: var(--font-family);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    transition: all var(--transition-base);
    line-height: var(--leading-tight);
    box-shadow: var(--shadow-xs), inset 0 1px 2px rgba(255, 255, 255, 0.8);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--gray-300);
    background: var(--bg-input-hover);
    box-shadow: var(--shadow-sm), inset 0 1px 2px rgba(255, 255, 255, 0.9);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--bg-input-focus);
    box-shadow: var(--shadow-focus), var(--shadow-sm), inset 0 1px 2px rgba(28, 159, 255, 0.03);
}

.form-input::placeholder,
.form-select::placeholder,
.form-textarea::placeholder {
    color: var(--text-tertiary);
    font-weight: var(--font-normal);
}

/* 输入框状态 */
.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--border-error);
    background: var(--error-light);
    box-shadow: var(--shadow-error);
}

.form-input.success,
.form-select.success,
.form-textarea.success {
    border-color: var(--border-success);
    background: var(--success-light);
    box-shadow: var(--shadow-success);
}

/* 文本域 */
.form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* 下拉选择框 */
.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* ==================== 现代化按钮组件 ==================== */
.modern-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    font-family: var(--font-family);
    border: 1.5px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    line-height: var(--leading-tight);
    letter-spacing: 0.3px;
    user-select: none;
    white-space: nowrap;
}

.modern-btn:active {
    transform: translateY(1px);
}

.modern-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* 主按钮 */
.modern-btn-primary {
    background: var(--primary-gradient);
    color: var(--text-white);
    box-shadow: 0 4px 12px rgba(28, 159, 255, 0.25);
}

.modern-btn-primary:hover:not(:disabled) {
    background: var(--primary-gradient-hover);
    box-shadow: 0 6px 20px rgba(28, 159, 255, 0.35);
    transform: translateY(-2px);
}

/* 次按钮 */
.modern-btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.modern-btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* 成功按钮 */
.modern-btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #45a816 100%);
    color: var(--text-white);
    box-shadow: 0 4px 12px rgba(82, 196, 26, 0.25);
}

.modern-btn-success:hover:not(:disabled) {
    box-shadow: 0 6px 20px rgba(82, 196, 26, 0.35);
    transform: translateY(-2px);
}

/* 危险按钮 */
.modern-btn-danger {
    background: linear-gradient(135deg, var(--error) 0%, #e04345 100%);
    color: var(--text-white);
    box-shadow: 0 4px 12px rgba(255, 77, 79, 0.25);
}

.modern-btn-danger:hover:not(:disabled) {
    box-shadow: 0 6px 20px rgba(255, 77, 79, 0.35);
    transform: translateY(-2px);
}

/* 按钮尺寸 */
.modern-btn-sm {
    padding: 8px 16px;
    font-size: var(--text-sm);
}

.modern-btn-lg {
    padding: 16px 32px;
    font-size: var(--text-xl);
}

.modern-btn-block {
    width: 100%;
}

/* ==================== 现代化网格布局 ==================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.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));
}

/* 响应式网格 */
@media (max-width: 767px) {

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

@media (min-width: 768px) and (max-width: 1023px) {

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

/* ==================== Flex工具类 ==================== */
.flex {
    display: flex;
}

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

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

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

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

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

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

.gap-xs {
    gap: var(--spacing-xs);
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.gap-xl {
    gap: var(--spacing-xl);
}

/* ==================== 间距工具类 ==================== */
.mt-xs {
    margin-top: var(--spacing-xs);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

.mb-xs {
    margin-bottom: var(--spacing-xs);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.p-xs {
    padding: var(--spacing-xs);
}

.p-sm {
    padding: var(--spacing-sm);
}

.p-md {
    padding: var(--spacing-md);
}

.p-lg {
    padding: var(--spacing-lg);
}

.p-xl {
    padding: var(--spacing-xl);
}

/* ==================== 文本工具类 ==================== */
.text-center {
    text-align: center;
}

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

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

.text-sm {
    font-size: var(--text-sm);
}

.text-base {
    font-size: var(--text-base);
}

.text-lg {
    font-size: var(--text-lg);
}

.text-xl {
    font-size: var(--text-xl);
}

.text-2xl {
    font-size: var(--text-2xl);
}

.text-3xl {
    font-size: var(--text-3xl);
}

.font-normal {
    font-weight: var(--font-normal);
}

.font-medium {
    font-weight: var(--font-medium);
}

.font-semibold {
    font-weight: var(--font-semibold);
}

.font-bold {
    font-weight: var(--font-bold);
}

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

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

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

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

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.animate-fade-in {
    animation: fadeIn var(--transition-normal);
}

.animate-fade-in-up {
    animation: fadeInUp var(--transition-normal);
}

.animate-fade-in-down {
    animation: fadeInDown var(--transition-normal);
}

.animate-slide-in-right {
    animation: slideInRight var(--transition-normal);
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ==================== 响应式工具类 ==================== */
@media (max-width: 767px) {
    .hide-sm {
        display: none !important;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .hide-md {
        display: none !important;
    }
}

@media (min-width: 1024px) {
    .hide-lg {
        display: none !important;
    }
}