/*
 * 诺智景 - 专业设计系统
 * Professional Design System for Enterprise B2B Technology
 *
 * 设计原则:
 * - 专业、简洁、现代
 * - 细腻的动画效果
 * - 优秀的可访问性
 * - 一致的设计语言
 */

/* ============================================
   CSS 变量系统
   ============================================ */
:root {
    /* 主色调 - 专业蓝紫 */
    --primary-50: #f0f4ff;
    --primary-100: #e0eaff;
    --primary-200: #c7d7fe;
    --primary-300: #a4b8fc;
    --primary-400: #8091f7;
    --primary-500: #5751D5;
    --primary-600: #4342b8;
    --primary-700: #363596;
    --primary-800: #2e2c7d;
    --primary-900: #272666;

    /* 中性色 - 灰度 */
    --neutral-50: #fafafa;
    --neutral-100: #f5f5f5;
    --neutral-200: #e5e5e5;
    --neutral-300: #d4d4d4;
    --neutral-400: #a3a3a3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;

    /* 语义色 */
    --success-50: #f0fdf4;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;

    --warning-50: #fffbeb;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-700: #b45309;

    --danger-50: #fef2f2;
    --danger-500: #ef4444;
    --danger-600: #dc2626;
    --danger-700: #b91c1c;

    --info-50: #eff6ff;
    --info-500: #3b82f6;
    --info-600: #2563eb;
    --info-700: #1d4ed8;

    /* 阴影系统 */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    /* 过渡 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   SVG 图标系统
   ============================================ */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 1em;
    height: 1em;
    vertical-align: middle;
}

.icon-xs { width: 0.75rem; height: 0.75rem; }
.icon-sm { width: 1rem; height: 1rem; }
.icon-md { width: 1.25rem; height: 1.25rem; }
.icon-lg { width: 1.5rem; height: 1.5rem; }
.icon-xl { width: 2rem; height: 2rem; }
.icon-2xl { width: 2.5rem; height: 2.5rem; }

/* ============================================
   按钮组件
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25rem;
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background: var(--primary-600);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: white;
    color: var(--neutral-700);
    border-color: var(--neutral-200);
}

.btn-secondary:hover {
    background: var(--neutral-50);
    border-color: var(--neutral-300);
}

.btn-outline {
    background: transparent;
    color: var(--primary-500);
    border-color: var(--primary-200);
}

.btn-outline:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
}

.btn-ghost {
    background: transparent;
    color: var(--neutral-600);
}

.btn-ghost:hover {
    background: var(--neutral-100);
}

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

/* ============================================
   卡片组件
   ============================================ */
.card {
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--neutral-300);
    box-shadow: var(--shadow-lg);
}

.card-interactive {
    cursor: pointer;
}

.card-interactive:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--neutral-100);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    background: var(--neutral-50);
    border-top: 1px solid var(--neutral-100);
}

/* ============================================
   徽章组件
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--radius-full);
}

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

.badge-success {
    background: var(--success-50);
    color: var(--success-700);
}

.badge-warning {
    background: var(--warning-50);
    color: var(--warning-700);
}

.badge-danger {
    background: var(--danger-50);
    color: var(--danger-700);
}

/* ============================================
   动画类
   ============================================ */
@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-fade-in {
    animation: fade-in var(--transition-slow) ease-out;
}

.animate-slide-up {
    animation: slide-up var(--transition-slow) ease-out;
}

.animate-slide-down {
    animation: slide-down var(--transition-slow) ease-out;
}

.animate-scale-in {
    animation: scale-in var(--transition-slow) ease-out;
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   渐变背景
   ============================================ */
.gradient-primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
}

.gradient-subtle {
    background: linear-gradient(180deg, var(--neutral-50) 0%, white 100%);
}

.gradient-mesh {
    background:
        radial-gradient(at 40% 20%, var(--primary-100) 0px, transparent 50%),
        radial-gradient(at 80% 0%, var(--primary-50) 0px, transparent 50%),
        radial-gradient(at 0% 50%, var(--primary-50) 0px, transparent 50%),
        radial-gradient(at 80% 50%, var(--primary-100) 0px, transparent 50%),
        radial-gradient(at 0% 100%, var(--primary-50) 0px, transparent 50%),
        radial-gradient(at 80% 100%, var(--primary-100) 0px, transparent 50%);
    background-color: var(--neutral-50);
}

/* ============================================
   文字样式
   ============================================ */
.text-display-xl {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.text-display-lg {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.015em;
}

.text-display-md {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

.text-heading-xl {
    font-size: 1.875rem;
    font-weight: 600;
    line-height: 1.3;
}

.text-heading-lg {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.35;
}

.text-heading-md {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
}

.text-body-lg {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--neutral-600);
}

.text-body {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--neutral-600);
}

.text-body-sm {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--neutral-500);
}

/* ============================================
   分隔线
   ============================================ */
.divider {
    height: 1px;
    background: var(--neutral-200);
    border: none;
}

.divider-vertical {
    width: 1px;
    height: auto;
    background: var(--neutral-200);
    border: none;
}

/* ============================================
   容器
   ============================================ */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-narrow {
    max-width: 768px;
}

.container-wide {
    max-width: 1536px;
}

/* ============================================
   间距工具类
   ============================================ */
.section {
    padding: 5rem 0;
}

.section-compact {
    padding: 3rem 0;
}

.section-spacious {
    padding: 7rem 0;
}

@media (min-width: 768px) {
    .section { padding: 6rem 0; }
    .section-compact { padding: 4rem 0; }
    .section-spacious { padding: 10rem 0; }
}

/* ============================================
   表格组件
   ============================================ */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.table thead {
    background: var(--neutral-50);
}

.table th {
    padding: 0.875rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--neutral-500);
    border-bottom: 1px solid var(--neutral-200);
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--neutral-100);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

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

/* ============================================
   输入框组件
   ============================================ */
.input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    line-height: 1.25rem;
    color: var(--neutral-700);
    background: white;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.input::placeholder {
    color: var(--neutral-400);
}

/* ============================================
   工具提示
   ============================================ */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    white-space: nowrap;
    color: white;
    background: var(--neutral-800);
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    margin-bottom: 0.5rem;
}

/* ============================================
   响应式工具
   ============================================ */
@media (max-width: 640px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .hide-tablet {
        display: none !important;
    }
}

@media (min-width: 1025px) {
    .hide-desktop {
        display: none !important;
    }
}

/* ============================================
   打印样式
   ============================================ */
@media print {
    .no-print {
        display: none !important;
    }

    .print-only {
        display: block !important;
    }
}