/* style.css */
/* Queen Ruva AI Support Portal - Professional Dark Theme */

/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Professional Dark Theme */
    --primary: #7c3aed;
    --primary-dark: #6d28d9;
    --primary-light: #8b5cf6;
    --secondary: #10b981;
    --accent: #f59e0b;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Background Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e1b4b;
    --bg-modal: rgba(15, 23, 42, 0.95);
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-on-primary: #ffffff;
    
    /* Border & Shadows */
    --border-color: #475569;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-index Layers */
    --z-dropdown: 1000;
    --z-modal: 1050;
    --z-popover: 1070;
    --z-tooltip: 1080;
    --z-toast: 1090;
    --z-fab: 1100;
}

/* Base Styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.1) 0%, transparent 25%);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

h1 {
    font-size: var(--font-size-3xl);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: var(--font-size-2xl);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 2px;
}

h3 {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

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

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

/* Header & Navigation */
header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-md) 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    transition: transform var(--transition-bounce);
}

.logo:hover .logo-icon {
    transform: rotate(-10deg) scale(1.1);
}

.logo h1 {
    font-size: var(--font-size-xl);
    margin: 0;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo span {
    color: var(--primary-light);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
    background: rgba(124, 58, 237, 0.1);
    transform: translateY(-1px);
}

.nav-menu a.active {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(139, 92, 246, 0.1));
    color: var(--primary-light);
}

.nav-menu a i {
    font-size: 0.9em;
}

/* User Profile in Navbar */
.user-profile {
    position: relative;
}

.profile-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(124, 58, 237, 0.1);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.profile-toggle:hover {
    background: rgba(124, 58, 237, 0.2);
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.profile-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    background-size: cover;
    background-position: center;
}

.profile-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    display: none;
    z-index: var(--z-dropdown);
    overflow: hidden;
}

.profile-dropdown.show {
    display: block;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.profile-dropdown a {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--border-color);
}

.profile-dropdown a:last-child {
    border-bottom: none;
}

.profile-dropdown a:hover {
    background: rgba(124, 58, 237, 0.1);
    color: var(--text-primary);
    padding-left: var(--spacing-lg);
}

.profile-dropdown a i {
    width: 20px;
    margin-right: var(--spacing-sm);
    color: var(--primary-light);
}

.unread-badge {
    background: var(--danger);
    color: white;
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: auto;
}

/* Hero Section */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
    z-index: -1;
}

.hero h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease;
}

.hero p {
    font-size: var(--font-size-lg);
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    color: var(--text-secondary);
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    animation: fadeInUp 0.6s ease 0.4s both;
}

/* Buttons */
button {
    font-family: var(--font-family);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--text-on-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.primary-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.primary-btn:hover::before {
    left: 100%;
}

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

.primary-btn:active {
    transform: translateY(0);
}

.secondary-btn {
    background: transparent;
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    border: 2px solid var(--primary);
    position: relative;
    overflow: hidden;
}

.secondary-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.secondary-btn:hover::before {
    opacity: 0.1;
}

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

/* Main Content */
main {
    padding: var(--spacing-xl) 0;
}

/* Issues Section */
.issues-section {
    margin-bottom: var(--spacing-2xl);
}

.issues-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.issues-header h2 {
    margin: 0;
}

.filter-controls {
    display: flex;
    gap: var(--spacing-sm);
}

/* Form Controls */
.form-control {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    width: 100%;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

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

/* Issues Grid */
.issues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

/* Issue Card */
.issue-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.issue-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.issue-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

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

.issue-card.open {
    border-left-color: var(--secondary);
}

.issue-card.resolved {
    border-left-color: var(--accent);
}

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

.issue-category {
    background: rgba(124, 58, 237, 0.2);
    color: var(--primary-light);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.edit-issue {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.edit-issue:hover {
    color: var(--primary-light);
    background: rgba(124, 58, 237, 0.1);
}

.issue-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.issue-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

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

.author-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    border: 2px solid var(--primary);
}

.issue-stats {
    display: flex;
    gap: var(--spacing-lg);
}

.stat {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.stat i {
    color: var(--primary-light);
}

.issue-date {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    text-align: right;
}

/* Stats Container */
.stats-container {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.stats-container h3 {
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* About Section */
.about-section {
    margin: var(--spacing-2xl) 0;
}

.about-content {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.about-card {
    text-align: center;
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.about-card:hover {
    transform: translateY(-4px);
}

.about-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Tutorials Section */
.tutorials-section {
    margin: var(--spacing-2xl) 0;
}

.tutorials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.tutorial-card {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.tutorial-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.tutorial-card h3 {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tutorial-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

/* Categories Section */
.categories-section {
    margin: var(--spacing-2xl) 0;
}

.categories-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.category-tag {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.category-tag:hover {
    background: rgba(124, 58, 237, 0.2);
    border-color: var(--primary);
    transform: translateY(-1px);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    color: var(--primary-light);
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    margin-bottom: var(--spacing-lg);
}

/* Footer */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

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

.footer-links a {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-info p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-modal);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

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

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 1;
}

.modal-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.close-btn:hover {
    color: var(--text-primary);
    background: rgba(124, 58, 237, 0.1);
}

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

.modal-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

/* Profile Modal Specific */
.profile-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.profile-avatar-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    border: 4px solid var(--primary);
    box-shadow: var(--shadow-md);
}

/* Tabs */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
}

.tab {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.tab.active {
    color: var(--primary-light);
    background: rgba(124, 58, 237, 0.1);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -13px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 2px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Friends & Users Lists */
.friend-item,
.online-user-item,
.conversation-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.friend-item:hover,
.online-user-item:hover,
.conversation-item:hover {
    background: rgba(124, 58, 237, 0.05);
}

.friend-info,
.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.friend-avatar,
.user-avatar,
.conversation-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    border: 2px solid var(--primary);
}

.friend-details,
.user-details {
    flex: 1;
}

.friend-name,
.user-name,
.conversation-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.friend-status,
.user-status,
.conversation-preview {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.status-online {
    color: var(--secondary);
}

.status-offline {
    color: var(--text-muted);
}

.friend-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.message-btn,
.add-friend-btn,
.unfriend-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border-radius: 50%;
    width: 32px;
    height: 32px;
}

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

.add-friend-btn {
    background: var(--secondary);
    color: white;
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

.unfriend-btn {
    background: var(--danger);
    color: white;
}

.message-btn:hover,
.add-friend-btn:hover,
.unfriend-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-sm);
}

.conversation-details {
    flex: 1;
    margin-left: var(--spacing-md);
}

.conversation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2px;
}

.conversation-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.conversation-item.unread .conversation-name {
    font-weight: 600;
    color: var(--primary-light);
}

/* Chat Messages */
.chat-messages {
    max-height: 400px;
    overflow-y: auto;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.message {
    margin-bottom: var(--spacing-md);
    max-width: 80%;
    animation: fadeIn 0.3s ease;
}

.message.sent {
    margin-left: auto;
}

.message.received {
    margin-right: auto;
}

.message-content {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.message.sent .message-content {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-bottom-right-radius: 4px;
}

.message.received .message-content {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 4px;
    text-align: right;
}

.chat-input-area {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.chat-input-area input {
    flex: 1;
}

/* Alerts */
.alert {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    max-width: 400px;
    z-index: var(--z-toast);
    animation: slideInRight 0.3s ease, slideOutRight 0.3s ease 4.7s;
}

.alert-success {
    border-left-color: var(--secondary);
}

.alert-error {
    border-left-color: var(--danger);
}

.alert-warning {
    border-left-color: var(--warning);
}

.alert-info {
    border-left-color: var(--info);
}

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

@keyframes slideOutRight {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* FAB Button */
.fab {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fab);
    transition: all var(--transition-bounce);
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
}

.fab:active {
    transform: scale(0.95);
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Header */
    .navbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-menu a {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .profile-toggle {
        padding: var(--spacing-sm);
    }
    
    .profile-dropdown {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        max-width: 100%;
        border-radius: var(--border-radius) var(--border-radius) 0 0;
        animation: slideUp 0.3s ease;
    }
    
    /* Hero */
    .hero h2 {
        font-size: var(--font-size-2xl);
    }
    
    .hero p {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-buttons button {
        width: 100%;
    }
    
    /* Issues Grid */
    .issues-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .issues-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-controls {
        width: 100%;
    }
    
    .filter-controls select {
        width: 100%;
        max-width: none;
    }
    
    /* Cards & Grids */
    .profile-stats,
    .about-grid,
    .tutorials-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-logo {
        align-items: center;
    }
    
    /* Modals */
    .modal {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        max-width: 100%;
        max-height: 95vh;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .modal-actions button {
        width: 100%;
    }
    
    /* Profile Modal */
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
    
    /* Chat */
    .message {
        max-width: 90%;
    }
    
    .chat-input-area {
        flex-direction: column;
    }
    
    .chat-input-area button {
        width: 100%;
    }
    
    /* FAB */
    .fab {
        bottom: 16px;
        right: 16px;
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
    }
    
    .issue-card,
    .tutorial-card,
    .about-card {
        padding: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .category-tag {
        padding: 6px 12px;
        font-size: var(--font-size-xs);
    }
    
    .footer-links a {
        padding: var(--spacing-xs) 0;
    }
}

/* Print Styles */
@media print {
    .fab,
    .nav-menu,
    .hero-buttons,
    .filter-controls {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .issue-card {
        break-inside: avoid;
        border: 1px solid #ccc;
    }
}

/* Dark theme scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

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

/* Selection */
::selection {
    background: rgba(124, 58, 237, 0.3);
    color: var(--text-primary);
}

/* Focus outlines for accessibility */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #000000;
        --bg-secondary: #1a1a1a;
        --text-primary: #ffffff;
        --border-color: #666666;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    button,
    .nav-menu a,
    .issue-card,
    .tutorial-card {
        min-height: 44px;
    }
    
    .nav-menu a {
        padding: var(--spacing-md);
    }
    
    .fab {
        width: 60px;
        height: 60px;
    }
    
    .close-btn {
        padding: var(--spacing-sm);
    }
}
/* Add these styles to your existing CSS */

/* Comments Modal Styles */
.comments-modal {
    background: rgba(0, 0, 0, 0.8);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.comments-modal-content {
    background: linear-gradient(135deg, #1e1b4b 0%, #1e293b 100%);
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(124, 58, 237, 0.3);
    position: relative;
    overflow: hidden;
}

.comments-modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #8b5cf6, #ec4899);
}

.comments-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.comments-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
}

.comments-header h3 i {
    color: #8b5cf6;
}

.close-comments {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close-comments:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.comments-list {
    max-height: 50vh;
    overflow-y: auto;
    padding-right: 10px;
    margin-bottom: 25px;
}

.comments-list::-webkit-scrollbar {
    width: 6px;
}

.comments-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.comments-list::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #8b5cf6, #ec4899);
    border-radius: 10px;
}

.no-comments {
    text-align: center;
    padding: 40px 20px;
    color: #94a3b8;
}

.no-comments i {
    font-size: 48px;
    margin-bottom: 15px;
    color: #64748b;
}

.no-comments p {
    margin: 10px 0;
    font-size: 1rem;
}

.comment-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    border-left: 4px solid #8b5cf6;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.comment-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.comment-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-size: cover;
    background-position: center;
    border: 2px solid #8b5cf6;
    flex-shrink: 0;
}

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

.comment-author-name {
    font-weight: 600;
    color: white;
    margin: 0 0 3px 0;
    font-size: 1rem;
}

.comment-timestamp {
    font-size: 0.85rem;
    color: #94a3b8;
    margin: 0;
}

.comment-text {
    color: #e2e8f0;
    line-height: 1.6;
    margin: 0;
    padding-left: 57px;
    font-size: 0.95rem;
}

.comment-actions {
    display: flex;
    gap: 15px;
    padding-left: 57px;
    margin-top: 12px;
}

.comment-action-btn {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.comment-action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.comment-action-btn.liked {
    color: #ef4444;
}

.comment-action-btn.disliked {
    color: #3b82f6;
}

.comment-action-btn i {
    font-size: 14px;
}

.add-comment-section {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.add-comment-section h4 {
    margin: 0 0 15px 0;
    color: white;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.add-comment-section h4 i {
    color: #8b5cf6;
}

.comment-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.comment-input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 15px;
    color: white;
    font-size: 0.95rem;
    resize: vertical;
    min-height: 100px;
    transition: all 0.3s ease;
}

.comment-input:focus {
    outline: none;
    border-color: #8b5cf6;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.comment-input::placeholder {
    color: #94a3b8;
}

.comment-form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Issue Card Voting Styles */
.issue-voting {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.vote-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px 15px;
    color: #94a3b8;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    min-width: 100px;
}

.vote-btn:hover {
    transform: translateY(-2px);
}

.vote-btn.like:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}

.vote-btn.dislike:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border-color: rgba(59, 130, 246, 0.3);
}

.vote-btn.active {
    font-weight: 600;
}

.vote-btn.like.active {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border-color: #ef4444;
}

.vote-btn.dislike.active {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    border-color: #3b82f6;
}

.vote-count {
    font-weight: 600;
    font-size: 1rem;
}

.vote-btn i {
    font-size: 16px;
}

/* View Comments Button */
.view-comments-btn {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: #8b5cf6;
    border-radius: 8px;
    padding: 8px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    margin-left: auto;
}

.view-comments-btn:hover {
    background: rgba(139, 92, 246, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.2);
}

/* Alert Styles */
.alert {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10001;
    animation: slideIn 0.3s ease, slideOut 0.3s ease 4.7s;
    max-width: 400px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border-color: rgba(16, 185, 129, 0.3);
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}

.alert-info {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    border-color: rgba(59, 130, 246, 0.3);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.3);
}

.alert i {
    font-size: 20px;
}

.alert div {
    flex: 1;
}

.alert div strong {
    display: block;
    margin-bottom: 4px;
}

.alert div p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

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

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

/* Comments Loading State */
.comments-loading {
    text-align: center;
    padding: 40px 20px;
}

.comments-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(139, 92, 246, 0.3);
    border-top: 3px solid #8b5cf6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}