/* ========================================
   富甲天下论坛 - 主样式表
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-rgb: 37, 99, 235;
    
    /* Secondary Colors */
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --secondary-light: #34d399;
    
    /* Accent Colors */
    --accent-color: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    
    /* Neutral Colors */
    --dark-color: #1e293b;
    --gray-dark: #475569;
    --gray-color: #64748b;
    --gray-light: #94a3b8;
    --gray-lighter: #cbd5e1;
    --light-color: #f1f5f9;
    --white-color: #ffffff;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --bg-overlay: rgba(15, 23, 42, 0.8);
    
    /* Border Colors */
    --border-color: #e2e8f0;
    --border-dark: #cbd5e1;
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    
    /* Status Colors */
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    --gradient-dark: linear-gradient(135deg, #1e293b, #0f172a);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-primary: 0 4px 14px 0 rgba(var(--primary-rgb), 0.39);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Typography */
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    --font-size-5xl: 48px;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-all: all var(--transition-normal);
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 16px;
}

/* ========================================
   CSS Reset & Base Styles
   ======================================== */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

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

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

h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-tight);
    font-weight: 600;
}

/* ========================================
   Utility Classes
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--gradient-primary);
    color: var(--text-white);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: var(--font-size-3xl);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.section-footer {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* ========================================
   Button Styles
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-all);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background: var(--gradient-primary);
    border-color: var(--primary-dark);
    color: var(--text-white);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--text-white);
    border-color: var(--secondary-color);
}

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

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

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

.btn-white:hover {
    background: var(--light-color);
    border-color: var(--light-color);
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
}

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

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-icon i {
    margin: 0;
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
    background: var(--white-color);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.navbar {
    background: var(--white-color);
    padding: var(--space-md) 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.logo-icon {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(var(--primary-rgb), 0.1);
}

.nav-link i {
    font-size: var(--font-size-sm);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--white-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-fast);
    z-index: var(--z-dropdown);
}

.nav-item.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.dropdown-menu li a:hover {
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary-color);
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: var(--light-color);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.hamburger {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

/* Breadcrumb */
.breadcrumb-wrapper {
    background: var(--light-color);
    padding: var(--space-sm) 0;
}

.breadcrumb-wrapper .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
}

.breadcrumb li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.breadcrumb li + li::before {
    content: '/';
    color: var(--gray-light);
}

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

.breadcrumb li.active {
    color: var(--primary-color);
    font-weight: 500;
}

.update-date {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
    padding: var(--space-2xl) 0;
}

.hero-title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--space-md);
}

.hero-title .highlight {
    display: block;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-title small {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 400;
    opacity: 0.9;
    margin-top: var(--space-sm);
}

.hero-description {
    font-size: var(--font-size-lg);
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    opacity: 0.9;
    line-height: var(--line-height-relaxed);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

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

.stat-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 700;
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

/* ========================================
   Recommendations Section
   ======================================== */

.recommendations {
    background: var(--bg-secondary);
}

.recommendation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.recommendation-card {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-all);
    position: relative;
}

.recommendation-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.recommendation-card.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
}

.card-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    color: var(--text-white);
    z-index: 1;
}

.card-badge.hot {
    background: var(--danger-color);
}

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

.card-image {
    position: relative;
    overflow: hidden;
}

.recommendation-card.featured .card-image {
    height: 100%;
    min-height: 300px;
}

.recommendation-card:not(.featured) .card-image {
    height: 200px;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.recommendation-card:hover .card-image img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
}

.card-overlay .category {
    color: var(--text-white);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.card-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
}

.recommendation-card.featured .card-content {
    padding: var(--space-xl);
    justify-content: center;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

.recommendation-card.featured .card-title {
    font-size: var(--font-size-2xl);
}

.card-title a {
    color: var(--text-primary);
    transition: var(--transition-fast);
}

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

.card-excerpt {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-md);
    flex-grow: 1;
}

.recommendation-card.featured .card-excerpt {
    font-size: var(--font-size-lg);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.author img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
}

.author span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.read-more {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--primary-color);
}

.read-more i {
    transition: transform var(--transition-fast);
}

.read-more:hover i {
    transform: translateX(4px);
}

/* ========================================
   Data Section
   ======================================== */

.data-section {
    background: var(--dark-color);
    color: var(--text-white);
}

.data-section .section-badge {
    background: var(--gradient-accent);
}

.data-section .section-title {
    color: var(--text-white);
}

.data-section .section-subtitle {
    color: var(--gray-light);
}

.data-dashboard {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.chart-card {
    background: var(--bg-dark);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-xl);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.chart-header h3 {
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.chart-header h3 i {
    color: var(--primary-light);
}

.chart-controls {
    display: flex;
    gap: var(--space-xs);
}

.control-btn {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--gray-light);
    background: transparent;
    border: 1px solid var(--gray-dark);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.control-btn:hover,
.control-btn.active {
    color: var(--text-white);
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.chart-body {
    height: 250px;
}

.data-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

/* ========================================
   Masters Section
   ======================================== */

.masters-section {
    background: var(--bg-secondary);
}

.masters-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.master-card {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-all);
    position: relative;
}

.master-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.master-card.gold {
    background: linear-gradient(135deg, #fff9e6, #fff3cc);
    border: 2px solid #ffd700;
}

.master-card.silver {
    background: linear-gradient(135deg, #f5f5f5, #e8e8e8);
    border: 2px solid #c0c0c0;
}

.master-card.bronze {
    background: linear-gradient(135deg, #fff5e6, #ffe4cc);
    border: 2px solid #cd7f32;
}

.master-rank {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.master-card.gold .master-rank {
    color: #b8860b;
}

.master-rank i {
    margin-right: var(--space-xs);
}

.master-avatar {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto var(--space-md);
}

.master-avatar img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 4px solid var(--white-color);
    box-shadow: var(--shadow-lg);
}

.avatar-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: var(--font-size-xs);
    border: 3px solid var(--white-color);
}

.master-info {
    margin-bottom: var(--space-md);
}

.master-name {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xs);
}

.master-title {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.master-tags {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.tag {
    padding: var(--space-xs) var(--space-sm);
    background: var(--light-color);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-full);
}

.master-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
}

.master-stats .stat {
    text-align: center;
}

.master-stats .value {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.master-stats .label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.master-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

/* ========================================
   Forum Preview Section
   ======================================== */

.forum-preview {
    background: var(--white-color);
}

.forum-categories {
    margin-bottom: var(--space-xl);
}

.category-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    background: var(--light-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--text-white);
    background: var(--primary-color);
}

.forum-threads {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.thread-card {
    display: flex;
    gap: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: var(--transition-all);
}

.thread-card:hover {
    background: var(--light-color);
    box-shadow: var(--shadow-md);
}

.thread-vote {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.vote-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-light);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.vote-btn:hover {
    background: var(--light-color);
}

.vote-btn.upvote:hover,
.vote-btn.upvote.active {
    color: var(--success-color);
}

.vote-btn.downvote:hover,
.vote-btn.downvote.active {
    color: var(--danger-color);
}

.vote-count {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.thread-content {
    flex: 1;
}

.thread-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.thread-tag {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-sm);
    color: var(--text-white);
    white-space: nowrap;
}

.thread-tag.analysis {
    background: var(--primary-color);
}

.thread-tag.ai {
    background: var(--secondary-color);
}

.thread-tag.investment {
    background: var(--accent-color);
}

.thread-tag.tech {
    background: var(--info-color);
}

.thread-title {
    font-size: var(--font-size-lg);
    flex: 1;
}

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

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

.thread-excerpt {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-md);
}

.thread-meta {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.thread-meta .author {
    margin-right: auto;
}

.thread-meta .author img {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ========================================
   Feedback Section
   ======================================== */

.feedback-section {
    background: var(--light-color);
}

.feedback-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.feedback-card {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.feedback-rating {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.feedback-rating i {
    color: var(--accent-color);
    font-size: var(--font-size-lg);
}

.feedback-text {
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
    font-style: italic;
}

.feedback-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.feedback-author img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
}

.feedback-author .author-info {
    flex: 1;
}

.feedback-author .name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
}

.feedback-author .role {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.verified {
    font-size: var(--font-size-sm);
    color: var(--success-color);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ========================================
   Quick Links Section
   ======================================== */

.quick-links {
    background: var(--white-color);
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.link-card {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: var(--transition-all);
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.link-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.link-card:hover::before {
    transform: scaleX(1);
}

.link-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-3xl);
    color: var(--text-white);
}

.link-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
}

.link-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--text-white);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.link-arrow i {
    transition: transform var(--transition-fast);
}

.link-card:hover .link-arrow i {
    transform: translateX(4px);
}

/* ========================================
   Newsletter Section
   ======================================== */

.newsletter {
    background: var(--gradient-hero);
    padding: var(--space-3xl) 0;
}

.newsletter-wrapper {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    text-align: center;
    color: var(--text-white);
}

.newsletter-content h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-sm);
}

.newsletter-content h2 i {
    margin-right: var(--space-sm);
}

.newsletter-content p {
    margin-bottom: var(--space-xl);
    opacity: 0.9;
}

.newsletter-form {
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form .form-group {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.newsletter-form input {
    flex: 1;
    padding: var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
}

.newsletter-form input:focus {
    outline: 2px solid var(--primary-color);
}

.form-check {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
}

.form-check input {
    width: 18px;
    height: 18px;
}

.newsletter-features {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-top: var(--space-xl);
}

.newsletter-features .feature {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--dark-color);
    color: var(--text-white);
}

.footer-main {
    padding: var(--space-3xl) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.footer-logo .logo-icon {
    font-size: var(--font-size-2xl);
    color: var(--primary-light);
}

.footer-logo .logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-white);
}

.footer-desc {
    color: var(--gray-light);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-lg);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-dark);
    color: var(--text-white);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-4px);
}

.footer-column h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-lg);
    position: relative;
    padding-bottom: var(--space-sm);
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: var(--gray-light);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-white);
    padding-left: var(--space-sm);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    color: var(--gray-light);
}

.footer-contact li i {
    color: var(--primary-light);
    margin-top: 4px;
}

.footer-bottom {
    background: var(--bg-dark);
    padding: var(--space-lg) 0;
}

.footer-bottom-content {
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-light);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-sm);
}

.footer-bottom a {
    color: var(--gray-light);
}

.footer-bottom a:hover {
    color: var(--text-white);
}

/* ========================================
   Back to Top Button
   ======================================== */

.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--text-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-all);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

/* ========================================
   Modal Styles
   ======================================== */

.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: var(--bg-overlay);
}

.modal-content {
    position: relative;
    background: var(--white-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    max-width: 450px;
    width: 90%;
    transform: translateY(-20px);
    transition: transform var(--transition-normal);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--light-color);
    color: var(--text-primary);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.modal-header h3 i {
    color: var(--primary-color);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.password-input {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-color);
}

.form-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
}

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

.modal-footer-text {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ========================================
   Responsive Styles
   ======================================== */

/* Tablet */
@media (max-width: 1200px) {
    .masters-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }
    
    .recommendation-grid {
        grid-template-columns: 1fr;
    }
    
    .recommendation-card.featured {
        grid-column: 1;
        grid-template-columns: 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 36px;
        --font-size-4xl: 28px;
        --font-size-3xl: 24px;
    }
    
    .nav-menu,
    .nav-actions {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: var(--space-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .data-dashboard {
        grid-template-columns: 1fr;
    }
    
    .masters-grid {
        grid-template-columns: 1fr;
    }
    
    .feedback-grid {
        grid-template-columns: 1fr;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form .form-group {
        flex-direction: column;
    }
    
    .newsletter-features {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .thread-card {
        flex-direction: column;
    }
    
    .thread-vote {
        flex-direction: row;
        justify-content: flex-start;
    }
    
    .thread-meta {
        flex-wrap: wrap;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .section {
        padding: var(--space-2xl) 0;
    }
    
    .hero-title small {
        font-size: var(--font-size-base);
    }
    
    .category-tabs {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stat-number {
        font-size: var(--font-size-2xl);
    }
    
    .back-to-top {
        bottom: var(--space-md);
        right: var(--space-md);
        width: 44px;
        height: 44px;
    }
}

/* AOS Animation Customization */
[data-aos] {
    pointer-events: auto !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-color);
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .back-to-top,
    .modal {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ========================================
   Page Hero (Shared across sub-pages)
   ======================================== */

.page-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 60px 0;
    color: white;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.page-hero h1 i {
    margin-right: 10px;
}

.page-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ========================================
   Masters Page Specific Styles
   ======================================== */

.masters-hero {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.masters-intro {
    background: white;
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.intro-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.intro-content > p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.intro-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.intro-features .feature {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.intro-features .feature i {
    color: var(--success-color);
    font-size: 1.2rem;
}

.masters-showcase {
    margin-bottom: 60px;
}

.top-three {
    display: flex;
    justify-content: center;
    gap: 30px;
    align-items: flex-end;
}

.master-top {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    width: 280px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    position: relative;
}

.master-top.gold {
    width: 320px;
    padding: 40px 30px;
    background: linear-gradient(135deg, #fff9e6, #fff3cc);
    border: 3px solid #ffd700;
    z-index: 1;
}

.master-top.gold .crown {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 3rem;
    color: #ffd700;
}

.master-top.silver {
    background: linear-gradient(135deg, #f8f8f8, #e8e8e8);
    border: 2px solid #c0c0c0;
}

.master-top.bronze {
    background: linear-gradient(135deg, #fff8f0, #ffe8d0);
    border: 2px solid #cd7f32;
}

.master-medal {
    font-size: 2rem;
    margin-bottom: 10px;
}

.master-top.gold .master-medal {
    color: #ffd700;
}

.master-top.silver .master-medal {
    color: #c0c0c0;
}

.master-top.bronze .master-medal {
    color: #cd7f32;
}

.master-top .master-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
}

.master-top.gold .master-avatar {
    width: 150px;
    height: 150px;
}

.master-top .master-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.master-rank-badge {
    display: inline-block;
    padding: 5px 15px;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.master-top h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.master-top .master-title {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.master-top .master-tags {
    margin-bottom: 15px;
}

.master-top .master-score {
    margin-bottom: 15px;
}

.master-score .score-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.master-score .score-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.master-top .master-stats {
    margin-bottom: 20px;
}

.masters-list {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.list-title {
    font-size: 1.3rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.list-title i {
    color: var(--primary-color);
}

.master-row {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.master-row:last-child {
    border-bottom: none;
}

.master-row:hover {
    background: var(--light-color);
    border-radius: 12px;
}

.row-rank {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-color);
    border-radius: 50%;
    font-weight: 700;
    color: var(--text-secondary);
}

.row-avatar {
    width: 60px;
    height: 60px;
}

.row-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.row-info {
    flex: 1;
}

.row-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.row-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.row-tags {
    display: flex;
    gap: 8px;
}

.row-tags span {
    padding: 4px 12px;
    background: var(--light-color);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.row-stats {
    display: flex;
    gap: 20px;
}

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

.mini-stat span {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
}

.mini-stat small {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.row-score {
    width: 100px;
}

.score-bar {
    height: 8px;
    background: var(--light-color);
    border-radius: 4px;
    overflow: hidden;
}

.score-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.expert-categories {
    background: var(--light-color);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.category-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.cat-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cat-icon i {
    font-size: 2rem;
    color: white;
}

.category-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.category-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.cat-count {
    font-size: 0.85rem;
    color: var(--primary-color);
}

.cat-count i {
    margin-right: 5px;
}

@media (max-width: 1200px) {
    .top-three {
        flex-direction: column;
        align-items: center;
    }
    
    .master-top {
        width: 100%;
        max-width: 350px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .master-row {
        flex-wrap: wrap;
    }
    
    .row-tags {
        order: 3;
        width: 100%;
        margin-top: 10px;
    }
    
    .row-score {
        display: none;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
}