/**
 * 用户中心与权限管理系统
 * 全局公共样式 - Global Styles
 */

/* ==================== CSS Variables ==================== */
:root {
    /* Colors - Primary */
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: #818cf8;
    --color-primary-bg: #eef2ff;
    
    /* Colors - Success */
    --color-success: #4f6dff;
    --color-success-hover: #3f5cff;
    --color-success-light: #8da0ff;
    --color-success-bg: #edf1ff;
    
    /* Colors - Warning */
    --color-warning: #f59e0b;
    --color-warning-hover: #d97706;
    --color-warning-light: #fbbf24;
    --color-warning-bg: #fef3c7;
    
    /* Colors - Error */
    --color-error: #ef4444;
    --color-error-hover: #dc2626;
    --color-error-light: #f87171;
    --color-error-bg: #fee2e2;
    
    /* Colors - Neutral */
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --color-black: #000000;
    
    /* Colors - Text */
    --color-text: var(--color-gray-900);
    --color-text-secondary: var(--color-gray-600);
    --color-text-muted: var(--color-gray-500);
    
    /* Colors - Background */
    --bg: var(--color-gray-50);
    --bg-secondary: var(--color-gray-100);
    --bg-tertiary: var(--color-gray-200);
    --color-background: var(--color-gray-50);
    --color-card: var(--color-white);
    
    /* Colors - Border */
    --border: var(--color-gray-200);
    --color-border: var(--color-gray-200);
    
    /* Colors - Aliases */
    --primary: var(--color-primary);
    --primary-light: var(--color-primary-light);
    --text-muted: var(--color-text-muted);
    --text-secondary: var(--color-text-secondary);
    
    /* Colors - Extended Palette */
    --color-indigo-50: #eef2ff;
    --color-indigo-100: #e0e7ff;
    --color-indigo-200: #c7d2fe;
    --color-indigo-300: #a5b4fc;
    --color-indigo-400: #818cf8;
    --color-indigo-500: #6366f1;
    --color-indigo-600: #4f46e5;
    --color-indigo-700: #4338ca;
    --color-indigo-800: #3730a3;
    --color-indigo-900: #312e81;
    
    --color-purple-50: #faf5ff;
    --color-purple-100: #f3e8ff;
    --color-purple-200: #e9d5ff;
    --color-purple-300: #d8b4fe;
    --color-purple-400: #c084fc;
    --color-purple-500: #a855f7;
    --color-purple-600: #9333ea;
    --color-purple-700: #7e22ce;
    --color-purple-800: #6b21a8;
    --color-purple-900: #581c87;
    
    /* Typography */
    --font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 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);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Layout */
    --header-height: 64px;
    --container-max: 1280px;
    --sidebar-width: 280px;
}

/* ==================== Reset & Base ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
}

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }

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

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

.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-muted { color: var(--color-gray-500); }

/* ==================== Container ==================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 1px solid var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-gray-600);
    border: 1px solid transparent;
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-gray-100);
}

.btn-success {
    background-color: var(--color-success);
    color: var(--color-white);
    border: 1px solid var(--color-success);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-hover);
}

.btn-error {
    background-color: var(--color-error);
    color: var(--color-white);
    border: 1px solid var(--color-error);
}

.btn-error:hover:not(:disabled) {
    background-color: var(--color-error-hover);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-block {
    width: 100%;
    display: flex;
}

.btn-icon {
    padding: var(--spacing-2);
    width: 36px;
    height: 36px;
}

/* ==================== Form Elements ==================== */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-label.required::after {
    content: '*';
    color: var(--color-error);
    margin-left: var(--spacing-1);
}

.form-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input.error {
    border-color: var(--color-error);
}

.form-input.error:focus {
    box-shadow: 0 0 0 3px var(--color-error-bg);
}

.form-input:disabled {
    background-color: var(--color-gray-100);
    cursor: not-allowed;
}

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

.form-hint {
    margin-top: var(--spacing-1);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.form-error {
    margin-top: var(--spacing-1);
    font-size: var(--font-size-xs);
    color: var(--color-error);
}

.form-input-group {
    display: flex;
}

.form-input-group .form-input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.form-input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    margin-left: -1px;
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
}

.form-checkbox input,
.form-radio input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Select */
.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 8l4 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;
}

/* ==================== Cards ==================== */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-100);
}

.card-body {
    padding: var(--spacing-6);
}

.card-footer {
    padding: var(--spacing-5) var(--spacing-6);
    border-top: 1px solid var(--color-gray-100);
    background-color: var(--color-gray-50);
}

/* ==================== Badges ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

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

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

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

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

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

/* ==================== Alerts ==================== */
.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.alert-success {
    background-color: var(--color-success-bg);
    border-color: var(--color-success-light);
    color: var(--color-success-hover);
}

.alert-warning {
    background-color: var(--color-warning-bg);
    border-color: var(--color-warning-light);
    color: var(--color-warning-hover);
}

.alert-error {
    background-color: var(--color-error-bg);
    border-color: var(--color-error-light);
    color: var(--color-error-hover);
}

.alert-info {
    background-color: var(--color-primary-bg);
    border-color: var(--color-primary-light);
    color: var(--color-primary-hover);
}

/* ==================== Tables ==================== */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-100);
}

.table th {
    font-weight: 600;
    color: var(--color-gray-700);
    background-color: var(--color-gray-50);
}

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

/* ==================== Utilities ==================== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.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-end { justify-content: flex-end; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

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

.w-full { width: 100%; }
.h-full { height: 100%; }

.p-2 { padding: var(--spacing-2); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

.px-4 { padding-left: var(--spacing-4); padding-right: var(--spacing-4); }
.py-2 { padding-top: var(--spacing-2); padding-bottom: var(--spacing-2); }
.py-4 { padding-top: var(--spacing-4); padding-bottom: var(--spacing-4); }

.m-auto { margin: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }

.rounded { border-radius: var(--radius-lg); }
.rounded-lg { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

.select-none { user-select: none; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* ==================== Animations ==================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-fadeIn { animation: fadeIn 0.3s ease-out; }
.animate-fadeInUp { animation: fadeInUp 0.4s ease-out; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }

/* ==================== Loading ==================== */
.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-200) 50%, var(--color-gray-100) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ==================== Modal ==================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal-backdrop);
    animation: fadeIn 0.2s ease-out;
}

.modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s ease-out;
}

.modal.open {
    display: flex !important;
}

.modal-content {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    animation: fadeInUp 0.3s ease-out;
}

.modal-lg {
    max-width: 800px;
}

.modal-sm .modal-content {
    max-width: 400px;
}

.modal-header {
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-close {
    padding: var(--spacing-1);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-gray-600);
}

.modal-body {
    padding: var(--spacing-6);
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--color-gray-100);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
}

/* ==================== Toast ==================== */
.toast-container {
    position: fixed;
    top: var(--spacing-6);
    right: var(--spacing-6);
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.toast {
    min-width: 280px;
    padding: var(--spacing-4);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    animation: slideInRight 0.3s ease-out;
}

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

.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-error); }
.toast-warning { border-left: 4px solid var(--color-warning); }
.toast-info { border-left: 4px solid var(--color-primary); }

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    :root {
        --header-height: 56px;
    }
    
    .container {
        padding: 0 var(--spacing-4);
    }
    
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    
    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 { grid-template-columns: 1fr; }
    
    .btn-lg {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-sm);
    }
    
    .card-body {
        padding: var(--spacing-4);
    }
    
    .modal {
        width: 95%;
        margin: auto;
    }
    
    .toast-container {
        left: var(--spacing-4);
        right: var(--spacing-4);
    }
    
    .toast {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-3);
    }
    
    .hide-mobile {
        display: none !important;
    }
}