/* ============================================
   DISREADFORUM — MAIN STYLESHEET
   Premium Dark Theme | Security-First Design
   ============================================ */

/* CSS Variables & Design Tokens */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --bg-elevated: #222230;
    --bg-hover: #2a2a3a;
    --bg-active: #333344;

    /* Text Colors */
    --text-primary: #e8e8f0;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b80;
    --text-inverse: #0a0a0f;

    /* Accent Colors */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
    --gradient-dark: linear-gradient(180deg, #111118 0%, #0a0a0f 100%);

    /* Borders */
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --header-height: 64px;
    --sidebar-width: 260px;
    --right-panel-width: 320px;
    --content-max-width: 1200px;
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Selection */
::selection {
    background: rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 4px;
}

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

/* ============================================
   LAYOUT
   ============================================ */

.layout-container {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr var(--right-panel-width);
    grid-template-areas: "sidebar main right";
    min-height: calc(100vh - var(--header-height));
    max-width: 1600px;
    margin: 0 auto;
    padding-top: var(--header-height);
}

.main-content {
    grid-area: main;
    padding: var(--space-lg);
    min-height: calc(100vh - var(--header-height) - 200px);
}

.sidebar {
    grid-area: sidebar;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--space-lg);
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
    z-index: 10;
}

.right-panel {
    grid-area: right;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: var(--space-lg);
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
}

/* ============================================
   HEADER
   ============================================ */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
}

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

.header-logo {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: white;
    box-shadow: var(--shadow-glow);
}

.header-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.header-search {
    position: relative;
    width: 320px;
}

.header-search input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    padding-left: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition-base);
}

.header-search input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.header-search input::placeholder {
    color: var(--text-muted);
}

.header-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

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

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--border-radius-md);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0);
    transition: var(--transition-fast);
}

.btn:hover::before {
    background: rgba(255, 255, 255, 0.1);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--border-hover);
    background: var(--bg-hover);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

.btn-lg {
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    border-radius: var(--border-radius-lg);
}

/* ============================================
   CARDS
   ============================================ */

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

.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

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

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   FORMS & INPUTS
   ============================================ */

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

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-label-required::after {
    content: ' *';
    color: var(--accent-danger);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-input:invalid:not(:placeholder-shown) {
    border-color: var(--accent-danger);
}

.form-input:valid:not(:placeholder-shown) {
    border-color: var(--accent-success);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.5;
}

.form-hint {
    margin-top: var(--space-xs);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.form-error {
    margin-top: var(--space-xs);
    font-size: 0.8rem;
    color: var(--accent-danger);
    display: none;
}

.form-input:invalid:not(:placeholder-shown) ~ .form-error {
    display: block;
}

/* Input with icon */
.input-group {
    position: relative;
}

.input-group .form-input {
    padding-left: 40px;
}

.input-group-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* Password strength indicator */
.password-strength {
    margin-top: var(--space-sm);
    height: 4px;
    background: var(--bg-elevated);
    border-radius: 2px;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    width: 0;
    transition: var(--transition-base);
    border-radius: 2px;
}

.password-strength-weak { background: var(--accent-danger); width: 33%; }
.password-strength-medium { background: var(--accent-warning); width: 66%; }
.password-strength-strong { background: var(--accent-success); width: 100%; }

/* ============================================
   NAVIGATION & SIDEBAR
   ============================================ */

.nav-section {
    margin-bottom: var(--space-lg);
}

.nav-section-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    padding-left: var(--space-sm);
}

.nav-list {
    list-style: none;
}

.nav-item {
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
    font-size: 0.9rem;
}

.nav-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    font-weight: 500;
}

.nav-link .nav-icon {
    width: 20px;
    height: 20px;
    opacity: 0.7;
}

.nav-link.active .nav-icon {
    opacity: 1;
}

.nav-badge {
    margin-left: auto;
    background: var(--accent-danger);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

/* ============================================
   THREADS & POSTS
   ============================================ */

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

.thread-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    transition: var(--transition-base);
    cursor: pointer;
}

.thread-item:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.thread-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    color: white;
    flex-shrink: 0;
}

.thread-meta {
    flex: 1;
    min-width: 0;
}

.thread-author {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.thread-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.thread-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.thread-excerpt {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.thread-tags {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--border-radius-xl);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.tag-critical {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-danger);
    border-color: rgba(239, 68, 68, 0.2);
}

.tag-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-warning);
    border-color: rgba(245, 158, 11, 0.2);
}

.thread-stats {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

/* Post */
.post {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--space-lg);
    overflow: hidden;
}

.post-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

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

.post-author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
    color: white;
}

.post-author-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.post-author-rank {
    font-size: 0.75rem;
    color: var(--accent-warning);
    font-weight: 500;
}

.post-time {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.post-body {
    padding: var(--space-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

.post-body code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-secondary);
}

.post-body pre {
    background: var(--bg-tertiary);
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
    overflow-x: auto;
    margin: var(--space-md) 0;
    border: 1px solid var(--border-color);
}

.post-body pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

/* ============================================
   FOOTER
   ============================================ */

.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-xl) var(--space-lg);
    margin-top: auto;
}

.footer-content {
    max-width: var(--content-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.footer-section h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    max-width: var(--content-max-width);
    margin: var(--space-xl) auto 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   LOADING & STATES
   ============================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.loader-ring {
    width: 48px;
    height: 48px;
    border: 3px solid var(--bg-elevated);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loader-text {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

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

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

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    pointer-events: none;
}

.toast {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: var(--shadow-lg);
    pointer-events: all;
    animation: toast-in 0.3s ease;
    max-width: 400px;
}

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

.toast-success {
    border-left: 3px solid var(--accent-success);
}

.toast-error {
    border-left: 3px solid var(--accent-danger);
}

.toast-warning {
    border-left: 3px solid var(--accent-warning);
}

.toast-info {
    border-left: 3px solid var(--accent-info);
}

/* ============================================
   MODALS
   ============================================ */

.modal-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9997;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    padding: var(--space-lg);
}

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

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95);
    transition: var(--transition-base);
}

.modal-container.active .modal {
    transform: scale(1);
}

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

.modal-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-muted { color: var(--text-muted); }
.text-success { color: var(--accent-success); }
.text-danger { color: var(--accent-danger); }
.text-warning { color: var(--accent-warning); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

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

.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

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

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

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

.animate-slide-in {
    animation: slideInRight 0.4s ease forwards;
}

/* ============================================
   RESPONSIVE BREAKPOINTS (Desktop First)
   ============================================ */

@media (max-width: 1200px) {
    .layout-container {
        grid-template-columns: var(--sidebar-width) 1fr;
        grid-template-areas: "sidebar main";
    }

    .right-panel {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .layout-container {
        grid-template-columns: 1fr;
        grid-template-areas: "main";
        padding-top: var(--header-height);
    }

    .sidebar {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 280px;
        height: calc(100vh - var(--header-height));
        z-index: 999;
        transition: left 0.3s ease;
    }

    .sidebar.active {
        left: 0;
    }

    .main-content {
        padding: var(--space-md);
    }

    .header-search {
        display: none;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .thread-header {
        flex-wrap: wrap;
    }

    .post-header {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }

    .card {
        padding: var(--space-md);
    }

    .thread-item {
        padding: var(--space-md);
    }

    .modal {
        margin: var(--space-sm);
        max-height: calc(100vh - var(--space-lg));
    }
}