/* Ahur Lab - Modern Enhanced Theme CSS */
/* RTL Support for Persian/Farsi with Improved UI/UX */

:root {
    /* Light Theme - Enhanced Color Palette */
    --primary: #5b21b6;
    --primary-light: #7c3aed;
    --primary-dark: #4c1d95;
    --primary-rgb: 91, 33, 182;

    --secondary: #0891b2;
    --secondary-light: #06b6d4;
    --secondary-dark: #0e7490;

    --accent: #dc2626;
    --accent-light: #ef4444;
    --accent-dark: #b91c1c;

    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0284c7;

    /* Background Colors */
    --bg-body: #ffffff;
    --bg-surface: #f8fafc;
    --bg-card: #ffffff;
    --bg-hover: #f1f5f9;
    --bg-active: #e2e8f0;
    --bg-overlay: rgba(15, 23, 42, 0.5);

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-disabled: #94a3b8;
    --text-inverse: #ffffff;

    /* Border & Shadow */
    --border-color: #e2e8f0;
    --border-width: 1px;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

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

    /* Typography */
    --font-sans: "Vazirmatn", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-mono: "Vazir Code", "Fira Code", "Cascadia Code", monospace;

    /* Animation */
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

[data-theme="dark"] {
    --primary: #a78bfa;
    --primary-light: #c4b5fd;
    --primary-dark: #8b5cf6;

    --secondary: #22d3ee;
    --secondary-light: #67e8f9;
    --secondary-dark: #06b6d4;

    --accent: #f87171;
    --accent-light: #fca5a5;
    --accent-dark: #ef4444;

    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --info: #38bdf8;

    --bg-body: #0f172a;
    --bg-surface: #1e293b;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --bg-active: #475569;
    --bg-overlay: rgba(0, 0, 0, 0.7);

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-disabled: #64748b;
    --text-inverse: #0f172a;

    --border-color: #334155;
}

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

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

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-body);
    direction: rtl;
    text-align: right;
    min-height: 100vh;
    transition:
        background-color var(--transition),
        color var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings */
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0 0 var(--spacing-md);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.875rem);
}

h4 {
    font-size: 1.5rem;
}
h5 {
    font-size: 1.25rem;
}
h6 {
    font-size: 1.125rem;
}

p {
    margin: 0 0 var(--spacing-md);
}

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

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

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* Navigation Bar - Enhanced */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1050;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: var(--border-width) solid var(--border-color);
    padding: var(--spacing-md) 0;
    transition: all var(--transition);
}

[data-theme="dark"] .navbar {
    background: rgba(30, 41, 59, 0.95);
}

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

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary) !important;
    transition: transform var(--transition);
}

.navbar-brand:hover {
    transform: translateY(-2px);
}

.navbar-brand i {
    font-size: 1.5rem;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    position: relative;
}

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

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

/* Theme Toggle - Enhanced */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.theme-toggle:hover {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
}

.theme-toggle i {
    font-size: 1rem;
    transition: transform var(--transition);
}

.theme-toggle:hover i {
    transform: rotate(20deg);
}

/* Mobile Navigation */
.navbar-toggler {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    cursor: pointer;
}

.navbar-toggler span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition);
}

@media (max-width: 768px) {
    .navbar-toggler {
        display: flex;
    }

    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-card);
        border-top: var(--border-width) solid var(--border-color);
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-slow);
    }

    .navbar-collapse.show {
        max-height: 400px;
    }

    .navbar-nav {
        flex-direction: column;
        padding: var(--spacing-md);
    }
}

/* Main Layout */
main {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-2xl) 0;
}

/* Cards - Enhanced */
.card {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-body {
    padding: 0;
}

/* Post Card - Enhanced */
.post-card {
    background: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.post-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--bg-surface);
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-image img {
    transform: scale(1.05);
}

.post-card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-header h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.post-header h2 a {
    color: var(--text-primary);
    transition: color var(--transition);
}

.post-header h2 a:hover {
    color: var(--primary);
}

/* Post Meta - Enhanced */
.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

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

.post-meta-item i {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Category Badge - Enhanced */
.category-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    transition: all var(--transition);
}

.category-badge:hover {
    background: var(--primary);
    color: var(--text-inverse);
}

/* Tags - Enhanced */
.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-surface);
    color: var(--text-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    transition: all var(--transition);
    margin-left: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.tag:hover {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

.tag i {
    font-size: 0.75rem;
}

/* Search Box - Enhanced */
.search-box {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-2xl) var(--spacing-md)
        var(--spacing-md);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    color: var(--text-primary);
    transition: all var(--transition);
}

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

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

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

/* Buttons - Enhanced */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-inverse);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3);
}

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

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8125rem;
}

/* Pagination - Enhanced */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-2xl) 0;
}

.page-item {
    list-style: none;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    background: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition);
}

.page-link:hover {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

.page-item.active .page-link {
    background: var(--primary);
    color: var(--text-inverse);
    border-color: var(--primary);
}

.page-item.disabled .page-link {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Footer - Enhanced */
.footer {
    background: var(--bg-surface);
    border-top: var(--border-width) solid var(--border-color);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition);
}

.footer-link:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

.footer .text-muted {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Sidebar Widgets - Enhanced */
.sidebar-widget {
    margin-bottom: var(--spacing-lg);
}

.widget-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.categories-list a,
.recent-post-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.categories-list a:hover,
.recent-post-item:hover {
    background: var(--bg-hover);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    padding: 2px 8px;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

/* Forms - Enhanced */
.form-control,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: all var(--transition);
}

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

.input-group {
    display: flex;
    align-items: stretch;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.input-group .form-control {
    border-radius: 0;
    flex: 1;
}

.input-group .btn {
    border-radius: 0;
}

/* Code Blocks - Enhanced */
pre {
    background: var(--bg-surface);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: var(--spacing-md) 0;
    font-family: var(--font-mono);
}

code {
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.875em;
}

pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

/* Blockquote - Enhanced */
blockquote {
    border-right: 4px solid var(--primary);
    padding-right: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-style: italic;
    background: var(--bg-surface);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Tables - Enhanced */
.table {
    width: 100%;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table thead {
    background: var(--bg-surface);
}

.table th {
    padding: var(--spacing-md);
    font-weight: 600;
    text-align: right;
    border-bottom: 2px solid var(--border-color);
}

.table td {
    padding: var(--spacing-md);
    border-bottom: var(--border-width) solid var(--border-color);
}

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

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

/* Alerts - New Component */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-right: 4px solid;
}

.alert-info {
    background: rgba(2, 132, 199, 0.1);
    border-color: var(--info);
    color: var(--info);
}

.alert-success {
    background: rgba(5, 150, 105, 0.1);
    border-color: var(--success);
    color: var(--success);
}

.alert-warning {
    background: rgba(217, 119, 6, 0.1);
    border-color: var(--warning);
    color: var(--warning);
}

.alert-danger {
    background: rgba(220, 38, 38, 0.1);
    border-color: var(--danger);
    color: var(--danger);
}

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

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

/* Smooth Scroll */
html:focus-within {
    scroll-behavior: smooth;
}

/* Accessibility */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .sidebar,
    .theme-toggle,
    .search-box,
    .pagination {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    a {
        color: #000;
        text-decoration: underline;
    }

    .card {
        break-inside: avoid;
    }
}

/* Responsive Utilities */
@media (max-width: 1024px) {
    .col-lg-8 {
        width: 100%;
    }
    .col-lg-4 {
        width: 100%;
        margin-top: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.5rem;
    }
    h3 {
        font-size: 1.25rem;
    }

    .post-meta {
        font-size: 0.75rem;
    }

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

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

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

/* Fix for sticky elements z-index hierarchy */
.sticky-top {
    position: sticky !important;
    top: 80px !important;
    z-index: 100 !important;
}

/* Ensure navbar stays above all content */
.navbar {
    z-index: 1050 !important;
}

/* Fix for sidebar TOC */
.col-lg-4 .sticky-top {
    z-index: 100 !important;
    top: 100px !important;
}

/* Prevent content from overlapping navbar */
main {
    position: relative;
    z-index: 1;
}

.post-content {
    position: relative;
    z-index: 1;
}

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

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

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

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