/* ============================================
   ENHANCED ADVANCED CSS - v2.0
   Polished | Animated | Interactive | Detailed
   ============================================ */

/* ---------- CSS Custom Properties (Design Tokens) ---------- */
:root {
    /* Brand Colors */
    --primary: #2A5C5D;
    --primary-light: #3a7a7c;
    --primary-dark: #1d4041;
    --secondary: #D4A373;
    --secondary-light: #e8c4a0;
    --accent: #E76F51;
    --accent-light: #f2937a;
    --accent-dark: #c9543a;

    /* Neutral Colors */
    --bg: #F8F9FA;
    --bg-alt: #eef1f4;
    --surface: #FFFFFF;
    --surface-alt: #f5f7f8;
    --text: #212529;
    --text-secondary: #6c757d;
    --text-muted: #9aa3ab;
    --border: #e0e4e8;

    /* Advanced Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.04), 0 6px 16px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.06), 0 12px 30px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.08), 0 20px 50px rgba(0, 0, 0, 0.10);
    --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.10), 0 24px 60px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 8px 25px rgba(42, 92, 93, 0.25);
    --shadow-accent: 0 8px 25px rgba(231, 111, 81, 0.30);
    --shadow-glow: 0 0 30px rgba(42, 92, 93, 0.20), 0 0 60px rgba(231, 111, 81, 0.10);

    /* Border Radius */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-slow: 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3rem;

    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 500;
    --z-fixed: 700;
    --z-modal: 900;
    --z-tooltip: 1000;
    --z-fab: 1100;

    /* Animations */
    --anim-duration: 0.5s;
    --anim-delay: 0.1s;
}

/* ---------- Dark Mode (Optional, auto-detected) ---------- */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0f1419;
        --bg-alt: #1a1f24;
        --surface: #1e242b;
        --surface-alt: #252c34;
        --text: #e8ecf0;
        --text-secondary: #a0a8b0;
        --text-muted: #6c757d;
        --border: #2d343c;
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow: 0 4px 6px rgba(0, 0, 0, 0.2), 0 6px 16px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.25), 0 12px 30px rgba(0, 0, 0, 0.35);
        --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.3), 0 20px 50px rgba(0, 0, 0, 0.4);
        --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.35), 0 24px 60px rgba(0, 0, 0, 0.45);
    }
}

/* ---------- Custom Font Faces ---------- */
@font-face {
    font-family: 'Vazirmatn';
    src: url('/fonts/Vazirmatn-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('/fonts/Vazirmatn-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('/fonts/Vazirmatn-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('/fonts/Vazirmatn-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Vazirmatn';
    src: url('/fonts/Vazirmatn-ExtraBold.woff2') format('woff2');
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}

/* Font Awesome - Local Hosted */
@font-face {
    font-family: 'Font Awesome 6 Free';
    src: url('/fonts/fontawesome/fa-solid-900.woff2') format('woff2');
    font-weight: 900;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Font Awesome 6 Brands';
    src: url('/fonts/fontawesome/fa-brands-400.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Font Awesome 6 Free Regular';
    src: url('/fonts/fontawesome/fa-regular-400.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

.fas,
.fa-solid {
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.far,
.fa-regular {
    font-family: 'Font Awesome 6 Free Regular';
    font-weight: 400;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.fab,
.fa-brands {
    font-family: 'Font Awesome 6 Brands';
    font-weight: 400;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Vazirmatn', system-ui, -apple-system, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    direction: rtl;
    line-height: 1.9;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* ---------- Custom Scrollbar ---------- */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
    border-radius: 5px;
    border: 2px solid var(--bg-alt);
    transition: background var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--accent), var(--accent-dark));
}

/* Firefox Scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--bg-alt);
}

/* ---------- Selection Style ---------- */
::selection {
    background: rgba(42, 92, 93, 0.25);
    color: var(--text);
    text-shadow: none;
}

/* ---------- Focus Visible (Accessibility) ---------- */
:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
    transition: outline 0.2s ease;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* ---------- Links ---------- */
a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
    position: relative;
}

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

/* Animated underline for links in content */
.post-content a:not(.btn),
.author-box a {
    background-image: linear-gradient(to left, var(--accent), var(--accent));
    background-size: 0% 2px;
    background-repeat: no-repeat;
    background-position: bottom right;
    transition: background-size var(--transition), color var(--transition);
    padding-bottom: 2px;
}

.post-content a:not(.btn):hover,
.author-box a:hover {
    background-size: 100% 2px;
    color: var(--accent);
}

/* ---------- Skip Link ---------- */
.skip-link {
    position: absolute;
    top: -60px;
    right: 20px;
    background: var(--primary);
    color: #fff;
    padding: 10px 20px;
    z-index: var(--z-modal);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    transition: top var(--transition);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.skip-link:focus {
    top: 0;
    box-shadow: var(--shadow-md);
}

/* ---------- Container ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
header[role="banner"] {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    padding: 15px 0;
    transition: all var(--transition);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Glassmorphism on scroll */
header[role="banner"].scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(30px) saturate(200%);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    box-shadow: var(--shadow-md);
    padding: 10px 0;
}

@media (prefers-color-scheme: dark) {
    header[role="banner"] {
        background: rgba(30, 36, 43, 0.85);
        border-bottom: 1px solid var(--border);
    }
    header[role="banner"].scrolled {
        background: rgba(30, 36, 43, 0.95);
    }
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

/* Logo */
.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.5px;
    position: relative;
    cursor: pointer;
    user-select: none;
}

.logo::before {
    content: '';
    width: 12px;
    height: 12px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    border-radius: var(--radius-full);
    display: inline-block;
    animation: logoPulse 2s ease-in-out infinite;
    box-shadow: 0 0 15px rgba(231, 111, 81, 0.4);
}

@keyframes logoPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 15px rgba(231, 111, 81, 0.4);
    }
    50% {
        transform: scale(1.15);
        box-shadow: 0 0 25px rgba(231, 111, 81, 0.7);
    }
}

/* Nav List */
nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    align-items: center;
}

nav ul li {
    position: relative;
}

nav ul li a {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

nav ul li a::before {
    content: '';
    position: absolute;
    bottom: 0;
    right: 50%;
    transform: translateX(50%);
    width: 0;
    height: 2px;
    background: linear-gradient(to left, var(--primary), var(--accent));
    border-radius: 2px;
    transition: width var(--transition);
}

nav ul li a:hover::before,
nav ul li a[aria-current="page"]::before {
    width: 70%;
}

nav ul li a:hover {
    color: var(--primary);
    background: rgba(42, 92, 93, 0.06);
}

nav ul li a[aria-current="page"] {
    color: var(--primary);
    background: rgba(42, 92, 93, 0.08);
    font-weight: 700;
}

nav ul li a i {
    font-size: 0.9rem;
    transition: transform var(--transition-bounce);
}

nav ul li a:hover i {
    transform: scale(1.2) rotate(-5deg);
}

/* Nav link ripple effect */
nav ul li a::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(42, 92, 93, 0.15);
    transform: translate(-50%, -50%);
    transition: width var(--transition), height var(--transition);
}

nav ul li a:active::after {
    width: 200px;
    height: 200px;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 1.5rem;
    transition: all var(--transition);
}

.nav-toggle:hover {
    background: rgba(42, 92, 93, 0.1);
    color: var(--primary);
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */
main[role="main"] {
    padding: var(--space-10) 0;
    min-height: 60vh;
    position: relative;
}

/* Animated gradient orbs in background */
main[role="main"]::before,
main[role="main"]::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    animation: orbFloat 15s ease-in-out infinite;
    opacity: 0.3;
    filter: blur(80px);
}

main[role="main"]::before {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

main[role="main"]::after {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
    bottom: -80px;
    left: -80px;
    animation-delay: -5s;
}

@keyframes orbFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.1);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }
    75% {
        transform: translate(10px, -10px) scale(1.05);
    }
}

/* ============================================
   FOOTER
   ============================================ */
footer[role="contentinfo"] {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: var(--light);
    text-align: center;
    padding: var(--space-10) 0;
    margin-top: var(--space-16);
    position: relative;
    overflow: hidden;
}

footer[role="contentinfo"]::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to left, var(--accent), var(--secondary), var(--accent));
    background-size: 200% 100%;
    animation: gradientSlide 3s linear infinite;
}

@keyframes gradientSlide {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

footer[role="contentinfo"] .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    text-align: right;
    margin-bottom: var(--space-8);
}

footer[role="contentinfo"] h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-4);
    position: relative;
    display: inline-block;
}

footer[role="contentinfo"] h3::after {
    content: '';
    position: absolute;
    bottom: -4px;
    right: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

footer[role="contentinfo"] a {
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition);
}

footer[role="contentinfo"] a:hover {
    color: #fff;
    transform: translateX(-4px);
    display: inline-block;
}

footer[role="contentinfo"] .copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: var(--space-5);
    font-size: 0.9rem;
    opacity: 0.85;
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumbs {
    margin-bottom: var(--space-8);
    animation: fadeInDown 0.5s ease;
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: var(--surface);
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    width: fit-content;
}

.breadcrumbs li {
    display: flex;
    align-items: center;
    transition: transform var(--transition-fast);
}

.breadcrumbs li a {
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
}

.breadcrumbs li a:hover {
    color: var(--accent);
    transform: translateX(-2px);
}

.breadcrumbs li:not(:last-child)::after {
    content: "/";
    margin: 0 12px;
    color: var(--text-muted);
    font-weight: 300;
}

.breadcrumbs li[aria-current="page"] {
    color: var(--primary);
    font-weight: 700;
    background: rgba(42, 92, 93, 0.08);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    background: linear-gradient(135deg, rgba(42, 92, 93, 0.92), rgba(231, 111, 81, 0.82)), url('/images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    text-align: center;
    padding: 100px 25px;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-12);
    position: relative;
    overflow: hidden;
    animation: heroEntrance 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Animated gradient overlay */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg,
            transparent 0%,
            rgba(255, 255, 255, 0.08) 30%,
            rgba(255, 255, 255, 0.12) 50%,
            rgba(255, 255, 255, 0.08) 70%,
            transparent 100%);
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
    pointer-events: none;
}

/* Floating particles */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 20% 30%, rgba(255, 255, 255, 0.6) 50%, transparent 51%),
        radial-gradient(2px 2px at 40% 70%, rgba(255, 255, 255, 0.5) 50%, transparent 51%),
        radial-gradient(2px 2px at 60% 20%, rgba(255, 255, 255, 0.7) 50%, transparent 51%),
        radial-gradient(3px 3px at 80% 60%, rgba(255, 255, 255, 0.4) 50%, transparent 51%),
        radial-gradient(2px 2px at 15% 80%, rgba(255, 255, 255, 0.5) 50%, transparent 51%),
        radial-gradient(2px 2px at 70% 40%, rgba(255, 255, 255, 0.6) 50%, transparent 51%),
        radial-gradient(3px 3px at 90% 15%, rgba(255, 255, 255, 0.4) 50%, transparent 51%),
        radial-gradient(2px 2px at 50% 90%, rgba(255, 255, 255, 0.5) 50%, transparent 51%);
    animation: particleFloat 20s linear infinite;
    pointer-events: none;
}

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

@keyframes particleFloat {
    0% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(-30px); opacity: 0.6; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes heroEntrance {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.hero h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-5);
    font-weight: 800;
    letter-spacing: -1px;
    position: relative;
    z-index: 1;
    animation: textReveal 0.8s ease 0.2s both;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 1.15rem;
    max-width: 850px;
    margin: 0 auto var(--space-8);
    position: relative;
    z-index: 1;
    animation: textReveal 0.8s ease 0.4s both;
    opacity: 0.9;
    line-height: 2;
}

@keyframes textReveal {
    from {
        opacity: 0;
        transform: translateY(20px);
        letter-spacing: -2px;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        letter-spacing: normal;
    }
}

.hero-small {
    padding: 60px 25px;
    background-attachment: scroll;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
    animation: textReveal 0.8s ease 0.6s both;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--primary);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    transition: all var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    font-family: inherit;
    line-height: 1.5;
}

/* Button shine effect */
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    transform: translate(-50%, -50%);
    transition: width var(--transition), height var(--transition);
}

.btn:hover::after {
    width: 300px;
    height: 300px;
}

.btn:hover {
    background: var(--accent);
    color: white;
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-accent);
}

.btn:active {
    transform: translateY(0) scale(0.98);
    box-shadow: var(--shadow-sm);
    transition-duration: 0.1s;
}

.btn i {
    transition: transform var(--transition-bounce);
}

.btn:hover i {
    transform: translateX(-3px) scale(1.1);
}

/* Button variants */
.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.6);
    color: white;
}

.btn-outline:hover {
    background: white;
    color: var(--primary);
    border-color: white;
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
    border-radius: var(--radius-md);
}

/* Gradient button */
.btn-gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    border: none;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.btn-gradient:hover {
    background-size: 200% 200%;
    animation: gradientShift 1.5s ease infinite;
    box-shadow: 0 8px 30px rgba(231, 111, 81, 0.4);
}

/* Magnetic button effect (via JS class) */
.btn.magnetic {
    transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

/* ============================================
   CARDS & GRID
   ============================================ */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-8);
}

.card {
    background: var(--surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition-spring);
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid var(--border);
    transform-style: preserve-3d;
    will-change: transform;
    animation: cardAppear 0.6s ease both;
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.12s; }
.card:nth-child(3) { animation-delay: 0.19s; }
.card:nth-child(4) { animation-delay: 0.26s; }
.card:nth-child(5) { animation-delay: 0.33s; }
.card:nth-child(6) { animation-delay: 0.40s; }

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to left, var(--primary), var(--accent));
    background-size: 200% 100%;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-slow);
    z-index: 2;
}

.card:hover::before {
    transform: scaleX(1);
    animation: gradientSlide 2s linear infinite;
}

.card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

/* Card image container */
.card-image-wrap {
    overflow: hidden;
    position: relative;
}

.card img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    transition: transform var(--transition-slow);
    display: block;
}

.card:hover img {
    transform: scale(1.08) rotate(-1deg);
}

/* Image overlay */
.card-image-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(42, 92, 93, 0.2));
    opacity: 0;
    transition: opacity var(--transition);
}

.card:hover .card-image-wrap::after {
    opacity: 1;
}

.card-body {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-3);
    color: var(--primary);
    font-weight: 700;
    transition: color var(--transition), transform var(--transition);
    letter-spacing: -0.3px;
}

.card:hover .card-title {
    color: var(--accent);
    transform: translateX(-4px);
}

.card-text {
    flex: 1;
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.9;
}

.card .btn {
    margin-top: var(--space-3);
    align-self: flex-start;
}

/* Card badge */
.card-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    color: var(--primary);
    padding: 6px 12px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 3;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.card:hover .card-badge {
    background: var(--accent);
    color: white;
    transform: scale(1.05) rotate(-2deg);
}

/* Card footer */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.card-footer .read-more {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
    color: var(--primary);
    transition: all var(--transition);
}

.card:hover .read-more {
    color: var(--accent);
    gap: 8px;
}

/* ============================================
   STATISTICS CARDS
   ============================================ */
.stat-card {
    align-items: center;
    text-align: center;
    padding: var(--space-8) var(--space-6);
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(42, 92, 93, 0.04), rgba(231, 111, 81, 0.06));
    opacity: 0;
    transition: opacity var(--transition);
    border-radius: inherit;
}

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

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.stat-card i {
    font-size: 2.8rem;
    color: var(--accent);
    margin-bottom: var(--space-4);
    transition: transform var(--transition-bounce), color var(--transition);
    display: inline-block;
}

.stat-card:hover i {
    transform: scale(1.15) rotate(-5deg);
    color: var(--primary);
}

.stat-card strong {
    font-size: 2.2rem;
    color: var(--accent);
    display: block;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition);
}

.stat-card:hover strong {
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--space-2);
}

/* Number counter animation */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   TABLES
   ============================================ */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    background: var(--surface);
    margin: var(--space-5) 0;
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    font-size: 0.95rem;
}

th,
td {
    padding: var(--space-4) var(--space-5);
    text-align: right;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition-fast);
}

th {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    font-weight: 700;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 1;
    white-space: nowrap;
}

th:first-child {
    border-radius: 0 var(--radius-sm) 0 0;
}

th:last-child {
    border-radius: var(--radius-sm) 0 0 0;
}

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

tbody tr {
    transition: all var(--transition-fast);
    cursor: default;
}

tbody tr:hover {
    background: rgba(42, 92, 93, 0.04);
    transform: scale(1.002);
}

tbody tr:nth-child(even) {
    background: var(--surface-alt);
}

tbody tr:nth-child(even):hover {
    background: rgba(42, 92, 93, 0.07);
}

/* Table row entrance animation */
tbody tr {
    animation: rowFadeIn 0.4s ease both;
}

tbody tr:nth-child(1) { animation-delay: 0.03s; }
tbody tr:nth-child(2) { animation-delay: 0.06s; }
tbody tr:nth-child(3) { animation-delay: 0.09s; }
tbody tr:nth-child(4) { animation-delay: 0.12s; }
tbody tr:nth-child(5) { animation-delay: 0.15s; }
tbody tr:nth-child(6) { animation-delay: 0.18s; }
tbody tr:nth-child(7) { animation-delay: 0.21s; }
tbody tr:nth-child(8) { animation-delay: 0.24s; }

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

/* ============================================
   FAQ ACCORDION
   ============================================ */
.faq {
    background: var(--surface);
    border-radius: var(--radius-sm);
    padding: var(--space-4) var(--space-5);
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.faq::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition);
}

.faq:hover::before {
    transform: scaleY(1);
}

.faq:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(42, 92, 93, 0.2);
    transform: translateX(-4px);
}

.faq summary {
    font-weight: 700;
    cursor: pointer;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    list-style: none;
    user-select: none;
    transition: color var(--transition);
    font-size: 1rem;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq summary i {
    transition: transform var(--transition-bounce);
    color: var(--accent);
    flex-shrink: 0;
}

.faq[open] summary {
    color: var(--accent);
}

.faq[open] summary i {
    transform: rotate(180deg);
}

.faq[open] {
    box-shadow: var(--shadow-md);
    border-color: rgba(231, 111, 81, 0.3);
}

.faq[open]::before {
    transform: scaleY(1);
}

.faq p {
    margin-top: var(--space-3);
    color: var(--text-secondary);
    padding-right: 28px;
    animation: faqContentReveal 0.3s ease;
    line-height: 1.9;
}

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

/* ============================================
   RELATED LINKS
   ============================================ */
.related {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.related li {
    transition: all var(--transition);
}

.related li a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    background: var(--surface);
    border: 1px solid var(--border);
    transition: all var(--transition);
    font-weight: 500;
    color: var(--text);
}

.related li a:hover {
    background: rgba(42, 92, 93, 0.06);
    border-color: rgba(42, 92, 93, 0.25);
    transform: translateX(-6px);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.related li i {
    color: var(--accent);
    transition: transform var(--transition-bounce);
    flex-shrink: 0;
}

.related li a:hover i {
    transform: scale(1.2) rotate(-10deg);
}

/* ============================================
   AUTHOR BOX
   ============================================ */
.author-box {
    background: linear-gradient(135deg, var(--surface) 0%, var(--surface-alt) 100%);
    border-right: 4px solid var(--primary);
    padding: var(--space-6);
    border-radius: var(--radius-sm);
    margin: var(--space-8) 0;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
}

.author-box::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(42, 92, 93, 0.04) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.author-box:hover::after {
    opacity: 1;
}

.author-box:hover {
    border-right-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.author-box h3 {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--primary);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.author-box h3 i {
    color: var(--accent);
}

.author-box p {
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
}

.author-box .badge-updated {
    display: inline-block;
    background: rgba(46, 125, 50, 0.12);
    color: #2e7d32;
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.85rem;
    margin-bottom: var(--space-4);
    font-weight: 600;
    letter-spacing: 0.3px;
    transition: all var(--transition);
}

.author-box:hover .badge-updated {
    background: rgba(46, 125, 50, 0.2);
    transform: scale(1.03);
}

/* ============================================
   EXPERTS GRID
   ============================================ */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-10);
}

.expert-card {
    text-align: center;
    padding: var(--space-8) var(--space-5);
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition-spring);
    position: relative;
    overflow: hidden;
}

.expert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(180deg, rgba(42, 92, 93, 0.03), transparent);
    pointer-events: none;
}

.expert-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
    border-color: rgba(42, 92, 93, 0.25);
}

.expert-card i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: var(--space-4);
    transition: all var(--transition-bounce);
    display: inline-block;
    background: rgba(42, 92, 93, 0.08);
    padding: var(--space-4);
    border-radius: var(--radius-full);
}

.expert-card:hover i {
    color: var(--accent);
    transform: scale(1.15) rotate(-8deg);
    background: rgba(231, 111, 81, 0.1);
    box-shadow: 0 0 25px rgba(231, 111, 81, 0.2);
}

.expert-card h3 {
    color: var(--primary);
    margin: var(--space-3) 0 var(--space-1);
    font-weight: 700;
    font-size: 1.15rem;
}

.expert-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    font-size: 0.9rem;
}

.linkedin-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: #0077b5;
    font-weight: 700;
    transition: all var(--transition);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
}

.linkedin-btn:hover {
    background: rgba(0, 119, 181, 0.08);
    color: #005582;
    transform: translateY(-2px);
    letter-spacing: 0.5px;
}

/* ============================================
   CONTACT & FORMS
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-8);
    align-items: start;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

.contact-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-list li {
    background: var(--surface);
    padding: var(--space-5);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.contact-list li:hover {
    transform: translateX(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(42, 92, 93, 0.2);
}

.contact-list i {
    color: var(--primary);
    margin-left: var(--space-2);
    width: 20px;
    text-align: center;
    transition: transform var(--transition-bounce);
}

.contact-list li:hover i {
    transform: scale(1.25);
    color: var(--accent);
}

.contact-list strong {
    display: block;
    color: var(--primary);
    margin-bottom: var(--space-1);
    font-size: 0.95rem;
}

.contact-form-box {
    background: var(--surface);
    padding: var(--space-8);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

/* Form Groups */
.form-group {
    margin-bottom: var(--space-5);
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text);
    transition: color var(--transition);
}

.form-group label i {
    margin-left: var(--space-2);
    color: var(--primary);
    transition: color var(--transition), transform var(--transition);
}

.form-group:focus-within label {
    color: var(--primary);
}

.form-group:focus-within label i {
    color: var(--accent);
    transform: scale(1.1);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all var(--transition);
    background: var(--surface);
    color: var(--text);
    line-height: 1.7;
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(42, 92, 93, 0.12), 0 4px 12px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.form-group input:focus::placeholder,
.form-group textarea:focus::placeholder {
    opacity: 0.5;
    transform: translateX(4px);
    transition: all var(--transition);
}

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

/* Form validation states */
.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: #4caf50;
}

.form-group input:valid:not(:placeholder-shown):focus,
.form-group textarea:valid:not(:placeholder-shown):focus {
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.12);
    border-color: #4caf50;
}

.form-group input:invalid:not(:placeholder-shown):not(:focus) {
    border-color: #f44336;
}

/* Floating labels */
.form-group.floating {
    position: relative;
}

.form-group.floating input,
.form-group.floating textarea {
    padding: var(--space-5) var(--space-4) var(--space-2);
    font-size: 0.95rem;
}

.form-group.floating label {
    position: absolute;
    top: 50%;
    right: var(--space-4);
    transform: translateY(-50%);
    pointer-events: none;
    transition: all var(--transition);
    color: var(--text-muted);
    font-size: 0.95rem;
    background: transparent;
    padding: 0 var(--space-1);
    margin: 0;
}

.form-group.floating input:focus + label,
.form-group.floating input:not(:placeholder-shown) + label,
.form-group.floating textarea:focus + label,
.form-group.floating textarea:not(:placeholder-shown) + label {
    top: 0;
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 700;
    background: var(--surface);
    padding: 0 var(--space-2);
    transform: translateY(-50%);
}

/* ============================================
   CALCULATOR
   ============================================ */
.calculator-box {
    background: var(--surface);
    padding: var(--space-8);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    margin: 0 auto;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.calculator-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to left, var(--primary), var(--accent), var(--primary));
    background-size: 200% 100%;
    animation: gradientSlide 3s linear infinite;
}

.calc-result {
    margin-top: var(--space-6);
    padding: var(--space-5);
    background: linear-gradient(135deg, rgba(42, 92, 93, 0.06), rgba(231, 111, 81, 0.06));
    border-radius: var(--radius-sm);
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--primary);
    text-align: center;
    border: 2px dashed rgba(42, 92, 93, 0.2);
    animation: resultReveal 0.5s ease;
    letter-spacing: 0.5px;
}

@keyframes resultReveal {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.calc-result.error {
    border-color: #f44336;
    color: #f44336;
    background: rgba(244, 67, 54, 0.06);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-5px); }
    80% { transform: translateX(5px); }
}

/* ============================================
   POST CONTENT
   ============================================ */
.post-header {
    margin-bottom: var(--space-8);
    animation: fadeInDown 0.6s ease;
}

.post-meta {
    display: flex;
    gap: var(--space-5);
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--space-3);
    flex-wrap: wrap;
    align-items: center;
}

.post-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.post-meta i {
    color: var(--accent);
    font-size: 0.85rem;
}

.post-content {
    background: var(--surface);
    padding: var(--space-8);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    animation: fadeInUp 0.6s ease 0.1s both;
    position: relative;
}

.post-content::first-letter {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary);
    float: right;
    line-height: 1;
    margin-left: var(--space-2);
    margin-top: var(--space-1);
    font-family: 'Vazirmatn', serif;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
    color: var(--primary);
    margin: var(--space-8) 0 var(--space-3);
    font-weight: 700;
    letter-spacing: -0.3px;
    position: relative;
    padding-bottom: var(--space-2);
}

.post-content h1 {
    font-size: var(--font-size-2xl);
    border-bottom: 3px solid var(--border);
}

.post-content h2 {
    font-size: var(--font-size-xl);
    border-bottom: 2px solid var(--border);
}

.post-content h3 {
    font-size: var(--font-size-lg);
}

.post-content p {
    margin-bottom: var(--space-4);
    line-height: 2.1;
    color: var(--text);
}

.post-content ul,
.post-content ol {
    margin: var(--space-4) var(--space-8);
    padding-right: var(--space-4);
}

.post-content li {
    margin-bottom: var(--space-2);
    line-height: 1.9;
    position: relative;
    transition: transform var(--transition-fast);
}

.post-content li:hover {
    transform: translateX(-4px);
}

.post-content ul li::marker {
    color: var(--accent);
    font-weight: 700;
}

.post-content ol li::marker {
    color: var(--primary);
    font-weight: 700;
}

.post-content blockquote {
    border-right: 4px solid var(--accent);
    padding: var(--space-4) var(--space-5);
    margin: var(--space-5) 0;
    background: rgba(231, 111, 81, 0.06);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic;
    color: var(--text-secondary);
    position: relative;
    transition: all var(--transition);
}

.post-content blockquote:hover {
    background: rgba(231, 111, 81, 0.1);
    transform: translateX(-4px);
}

.post-content blockquote::before {
    content: '"';
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    display: block;
    margin-bottom: var(--space-2);
    opacity: 0.5;
}

.post-content code {
    background: var(--bg-alt);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--accent);
    border: 1px solid var(--border);
}

.post-content pre {
    background: var(--bg-alt);
    padding: var(--space-5);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: var(--space-5) 0;
    border: 1px solid var(--border);
}

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

.post-content img {
    max-width: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    margin: var(--space-5) 0;
    transition: all var(--transition);
    cursor: zoom-in;
}

.post-content img:hover {
    box-shadow: var(--shadow-lg);
    transform: scale(1.01);
}

.post-footer {
    margin-top: var(--space-10);
    text-align: center;
    animation: fadeInUp 0.6s ease 0.3s both;
}

/* ============================================
   FLOATING ACTION BUTTON (FAB)
   ============================================ */
.fab-btn {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(231, 111, 81, 0.4), 0 8px 35px rgba(42, 92, 93, 0.25);
    z-index: var(--z-fab);
    text-decoration: none;
    transition: all var(--transition-bounce);
    animation: pulse 2.5s ease-in-out infinite;
    border: 3px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
}

.fab-btn::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary), var(--accent), var(--primary));
    background-size: 200% 200%;
    animation: gradientShift 2s ease infinite;
    z-index: -1;
}

.fab-btn:hover {
    transform: scale(1.12) rotate(-5deg);
    box-shadow: 0 8px 30px rgba(231, 111, 81, 0.55), 0 12px 45px rgba(42, 92, 93, 0.35);
    animation: none;
}

.fab-btn:active {
    transform: scale(0.95);
    transition-duration: 0.1s;
}

.fab-btn i {
    font-size: 1.5rem;
    transition: transform var(--transition);
    position: relative;
    z-index: 1;
}

.fab-btn:hover i {
    transform: rotate(10deg) scale(1.1);
}

.fab-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition), height var(--transition);
}

.fab-btn:hover::after {
    width: 200px;
    height: 200px;
}

/* Fab tooltip */
.fab-btn .fab-tooltip {
    position: absolute;
    left: 70px;
    background: var(--surface);
    color: var(--text);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    transform: translateX(10px);
    border: 1px solid var(--border);
}

.fab-btn:hover .fab-tooltip {
    opacity: 1;
    transform: translateX(0);
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 20px rgba(231, 111, 81, 0.4), 0 0 0 0 rgba(231, 111, 81, 0.5);
    }
    50% {
        box-shadow: 0 4px 20px rgba(231, 111, 81, 0.4), 0 0 0 18px rgba(231, 111, 81, 0);
    }
    100% {
        box-shadow: 0 4px 20px rgba(231, 111, 81, 0.4), 0 0 0 0 rgba(231, 111, 81, 0);
    }
}

/* ============================================
   SCROLL ANIMATIONS (Intersection Observer classes)
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-scale {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.fade-in-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* Staggered delays */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.12s; }
.stagger-3 { transition-delay: 0.19s; }
.stagger-4 { transition-delay: 0.26s; }
.stagger-5 { transition-delay: 0.33s; }
.stagger-6 { transition-delay: 0.40s; }

/* ============================================
   ANIMATED KEYFRAME UTILITIES
   ============================================ */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    75% { transform: rotate(5deg); }
}

/* ============================================
   LOADING / SKELETON SHIMMER
   ============================================ */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-alt) 25%,
        var(--border) 50%,
        var(--bg-alt) 75%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
    min-height: 20px;
}

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

/* ============================================
   PROGRESS BAR (Scroll Indicator)
   ============================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(to left, var(--primary), var(--accent));
    background-size: 200% 100%;
    z-index: var(--z-modal);
    transform-origin: right;
    transform: scaleX(0);
    transition: transform 0.1s linear;
    animation: gradientSlide 3s linear infinite;
}

.scroll-progress.visible {
    transform: scaleX(var(--scroll-progress, 0));
}

/* ============================================
   TOOLTIP
   ============================================ */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    right: 50%;
    transform: translateX(50%) scale(0.8);
    background: var(--text);
    color: var(--bg);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    z-index: var(--z-tooltip);
    box-shadow: var(--shadow-md);
}

[data-tooltip]::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    right: 50%;
    transform: translateX(50%) scale(0.8) rotate(45deg);
    width: 10px;
    height: 10px;
    background: var(--text);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after,
[data-tooltip]:hover::before {
    opacity: 1;
    transform: translateX(50%) scale(1);
}

[data-tooltip]:hover::before {
    transform: translateX(50%) scale(1) rotate(45deg);
}

/* ============================================
   3D CARD TILT (activated via JS)
   ============================================ */
.card.tilt {
    transform-style: preserve-3d;
    perspective: 800px;
}

.card.tilt .card-body {
    transform-style: preserve-3d;
}

.card.tilt .card-title,
.card.tilt .card-text,
.card.tilt .btn {
    transform: translateZ(30px);
}

.card.tilt .card-image-wrap {
    transform: translateZ(20px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: var(--font-size-3xl);
    }

    .hero {
        padding: 70px 20px;
        background-attachment: scroll;
    }

    .post-content {
        padding: var(--space-6);
    }
}

@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }

    header[role="banner"] {
        padding: 10px 0;
    }

    .nav-toggle {
        display: block;
    }

    nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        background: var(--surface);
        border-radius: var(--radius-sm);
        padding: var(--space-4);
        box-shadow: var(--shadow-md);
        border: 1px solid var(--border);
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        margin-top: 10px;
        z-index: var(--z-dropdown);
    }

    nav ul.open {
        display: flex;
        animation: fadeInDown 0.3s ease;
    }

    nav ul li {
        width: 100%;
    }

    nav ul li a {
        width: 100%;
        justify-content: flex-start;
        padding: var(--space-3) var(--space-4);
    }

    .hero h1 {
        font-size: var(--font-size-2xl);
        letter-spacing: -0.5px;
    }

    .hero p {
        font-size: 1rem;
        line-height: 1.8;
    }

    .hero {
        padding: 50px 16px;
        border-radius: var(--radius);
    }

    .hero-cta {
        flex-direction: column;
        gap: var(--space-3);
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }

    .grid {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }

    .card img {
        height: 180px;
    }

    .post-content {
        padding: var(--space-5);
        font-size: 0.95rem;
    }

    .post-content::first-letter {
        font-size: 2.5rem;
    }

    .post-content h1 {
        font-size: var(--font-size-xl);
    }

    .post-content h2 {
        font-size: var(--font-size-lg);
    }

    .experts-grid {
        grid-template-columns: 1fr;
    }

    .fab-btn {
        width: 50px;
        height: 50px;
        bottom: 20px;
        left: 20px;
    }

    .fab-btn i {
        font-size: 1.2rem;
    }

    .fab-btn .fab-tooltip {
        display: none;
    }

    .calculator-box {
        padding: var(--space-5);
    }

    .contact-form-box {
        padding: var(--space-5);
    }

    .stat-card strong {
        font-size: 1.8rem;
    }

    main[role="main"] {
        padding: var(--space-6) 0;
    }

    footer[role="contentinfo"] {
        padding: var(--space-6) 0;
        margin-top: var(--space-10);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .hero h1 {
        font-size: var(--font-size-xl);
    }

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

    .card-title {
        font-size: 1.1rem;
    }

    .btn {
        padding: 10px 18px;
        font-size: 0.85rem;
    }

    .btn-large {
        padding: 12px 24px;
        font-size: 1rem;
    }

    .post-meta {
        gap: var(--space-3);
        font-size: 0.8rem;
    }

    th,
    td {
        padding: var(--space-3) var(--space-4);
        font-size: 0.85rem;
    }

    .breadcrumbs ol {
        font-size: 0.8rem;
        padding: 8px 12px;
    }
}

/* ============================================
   REDUCED MOTION (Accessibility)
   ============================================ */
@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;
    }

    .fab-btn {
        animation: none !important;
    }

    .hero::before {
        animation: none !important;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    header[role="banner"],
    footer[role="contentinfo"],
    .fab-btn,
    .breadcrumbs,
    .hero-cta,
    .scroll-progress {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .card,
    .post-content,
    .calculator-box,
    .contact-form-box {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .hero {
        background: none;
        color: black;
        padding: 20px;
        border-radius: 0;
    }

    .hero h1,
    .hero p {
        animation: none;
        text-shadow: none;
    }
}