/**
 * ThemeGetUp - Main Stylesheet
 * 
 * @package ThemeGetUp
 * @version 1.0.0
 */

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    z-index: 1000;
    transition: all var(--transition-base);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo__icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-glow);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    box-shadow: var(--glow-sm);
}

.logo__text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--space-900);
}

.logo__text span {
    color: var(--quantum-blue);
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav__list {
    display: flex;
    gap: 32px;
}

.nav__link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--space-600);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link:hover {
    color: var(--quantum-blue);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-glow);
    transition: width var(--transition-base);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__link.current-menu-item {
    color: var(--quantum-blue);
}

.nav__link.current-menu-item::after {
    width: 100%;
}

.nav__cta {
    padding: 12px 24px;
    background: var(--gradient-glow);
    border-radius: 10px;
    font-weight: 600;
    color: white;
    transition: all var(--transition-base);
    box-shadow: var(--glow-sm);
}

.nav__cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-md);
    color: white;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--space-700);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
}

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

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow-md);
    color: white;
}

.btn--ghost {
    background: white;
    color: var(--space-700);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-soft);
}

.btn--ghost:hover {
    background: var(--space-50);
    border-color: var(--quantum-blue);
    color: var(--quantum-blue);
}

.btn--sm {
    padding: 10px 20px;
    font-size: 0.875rem;
}

.btn--lg {
    padding: 18px 36px;
    font-size: 1.125rem;
}

/* ==========================================================================
   SECTION HEADERS
   ========================================================================== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--quantum-blue);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--space-900);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--space-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    padding-top: var(--header-h);
}

.hero__bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.hero__orb--1 {
    width: 600px;
    height: 600px;
    background: var(--quantum-blue);
    top: -200px;
    right: -100px;
}

.hero__orb--2 {
    width: 500px;
    height: 500px;
    background: var(--quantum-teal);
    bottom: -150px;
    left: -100px;
    animation-delay: -5s;
}

.hero__orb--3 {
    width: 300px;
    height: 300px;
    background: var(--quantum-cyan);
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--quantum-blue);
    margin-bottom: 24px;
    box-shadow: var(--shadow-soft);
}

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

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    color: var(--space-900);
    margin-bottom: 24px;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--space-600);
    margin-bottom: 40px;
    max-width: 560px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about {
    padding: 100px 0;
    background: var(--space-50);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about__content .section-label {
    justify-content: flex-start;
    margin-bottom: 16px;
}

.about__content h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--space-900);
    margin-bottom: 24px;
}

.about__content p {
    font-size: 1.0625rem;
    color: var(--space-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about__features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.about__feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: white;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
}

.about__feature:hover {
    border-color: var(--quantum-blue);
    transform: translateX(4px);
}

.about__feature i {
    width: 36px;
    height: 36px;
    background: rgba(3,105,161,0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--quantum-blue);
    font-size: 0.875rem;
}

.about__feature span {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--space-700);
}

/* Stats Grid */
.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    padding: 28px 24px;
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    text-align: center;
    transition: all var(--transition-slow);
    box-shadow: var(--shadow-soft);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--stat-color, var(--quantum-blue));
    box-shadow: var(--shadow-card);
}

.stat-card__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--stat-bg, var(--gradient-glow));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.stat-card__value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--space-900);
    display: block;
    margin-bottom: 4px;
}

.stat-card__label {
    font-size: 0.875rem;
    color: var(--space-500);
}

.stat-card--articles {
    --stat-color: var(--quantum-blue);
    --stat-bg: linear-gradient(135deg, #0369a1, #075985);
}

.stat-card--events {
    --stat-color: var(--quantum-teal);
    --stat-bg: linear-gradient(135deg, #0d9488, #0f766e);
}

.stat-card--years {
    --stat-color: var(--quantum-cyan);
    --stat-bg: linear-gradient(135deg, #0891b2, #0e7490);
}

.stat-card--categories {
    --stat-color: var(--quantum-green);
    --stat-bg: linear-gradient(135deg, #059669, #047857);
}

/* ==========================================================================
   CATEGORIES SECTION
   ========================================================================== */
.categories {
    padding: 120px 0;
    background: var(--space-50);
    position: relative;
}

.categories__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.category-card {
    position: relative;
    padding: 32px;
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    transition: all var(--transition-slow);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--card-gradient);
    opacity: 0;
    transition: opacity var(--transition-slow);
    border-radius: 20px;
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: transparent;
    box-shadow: var(--shadow-card), 0 0 40px var(--card-glow);
}

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

.category-card__icon {
    position: relative;
    width: 64px;
    height: 64px;
    background: var(--card-bg);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 24px;
    transition: all var(--transition-slow);
}

.category-card:hover .category-card__icon {
    transform: scale(1.1);
    box-shadow: 0 0 30px var(--card-glow);
}

.category-card__title {
    position: relative;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--space-900);
    margin-bottom: 12px;
}

.category-card__desc {
    position: relative;
    font-size: 0.9375rem;
    color: var(--space-500);
    margin-bottom: 24px;
    line-height: 1.6;
}

.category-card__meta {
    position: relative;
    font-size: 0.8125rem;
    color: var(--space-400);
    margin-bottom: 16px;
}

.category-card__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--card-color);
    transition: gap var(--transition-base);
}

.category-card:hover .category-card__link {
    gap: 12px;
}

/* Card Variants */
.category-card--quantum {
    --card-bg: linear-gradient(135deg, #0369a1, #0891b2);
    --card-gradient: linear-gradient(135deg, rgba(3,105,161,0.08) 0%, rgba(8,145,178,0.02) 100%);
    --card-glow: rgba(3,105,161,0.25);
    --card-color: var(--quantum-blue);
}

.category-card--astro {
    --card-bg: linear-gradient(135deg, #0e7490, #0d9488);
    --card-gradient: linear-gradient(135deg, rgba(14,116,144,0.08) 0%, rgba(13,148,136,0.02) 100%);
    --card-glow: rgba(14,116,144,0.25);
    --card-color: var(--quantum-cyan);
}

.category-card--mech {
    --card-bg: linear-gradient(135deg, #0891b2, #059669);
    --card-gradient: linear-gradient(135deg, rgba(8,145,178,0.08) 0%, rgba(5,150,105,0.02) 100%);
    --card-glow: rgba(8,145,178,0.25);
    --card-color: var(--quantum-teal);
}

.category-card--history {
    --card-bg: linear-gradient(135deg, #d97706, #dc2626);
    --card-gradient: linear-gradient(135deg, rgba(217,119,6,0.08) 0%, rgba(220,38,38,0.02) 100%);
    --card-glow: rgba(217,119,6,0.25);
    --card-color: var(--quantum-amber);
}

.category-card--edu {
    --card-bg: linear-gradient(135deg, #059669, #0d9488);
    --card-gradient: linear-gradient(135deg, rgba(5,150,105,0.08) 0%, rgba(13,148,136,0.02) 100%);
    --card-glow: rgba(5,150,105,0.25);
    --card-color: var(--quantum-green);
}

.category-card--research {
    --card-bg: linear-gradient(135deg, #0369a1, #0e7490);
    --card-gradient: linear-gradient(135deg, rgba(3,105,161,0.08) 0%, rgba(14,116,144,0.02) 100%);
    --card-glow: rgba(3,105,161,0.25);
    --card-color: var(--quantum-blue);
}

/* ==========================================================================
   ARTICLES SECTION
   ========================================================================== */
.articles {
    padding: 120px 0;
    background: white;
}

.articles__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

/* Featured Article */
.article-featured {
    grid-row: span 2;
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    background: white;
    border: 1px solid var(--glass-border);
    transition: all var(--transition-slow);
    box-shadow: var(--shadow-soft);
}

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

.article-featured__img {
    height: 280px;
    background: linear-gradient(135deg, var(--quantum-blue) 0%, var(--quantum-teal) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.article-featured__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-featured__img i {
    font-size: 5rem;
    color: rgba(255,255,255,0.2);
}

.article-featured__img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(0,0,0,0.3) 0%, transparent 50%);
}

.article-featured__badge {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 8px 16px;
    background: rgba(59, 130, 246, 0.9);
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 2;
}

.article-featured__content {
    padding: 32px;
}

.article-featured__tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--quantum-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    display: block;
}

.article-featured__title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--space-900);
    line-height: 1.3;
    margin-bottom: 16px;
    transition: color var(--transition-base);
}

.article-featured:hover .article-featured__title {
    color: var(--quantum-blue);
}

.article-featured__excerpt {
    font-size: 1rem;
    color: var(--space-500);
    line-height: 1.7;
    margin-bottom: 24px;
}

.article-featured__meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.875rem;
    color: var(--space-500);
}

.article-featured__meta i {
    color: var(--quantum-blue);
}

/* Article Small Cards */
.articles__side {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.article-card {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-soft);
}

.article-card:hover {
    background: var(--space-50);
    border-color: var(--quantum-blue);
    transform: translateX(8px);
}

.article-card__link {
    display: flex;
    gap: 20px;
    width: 100%;
}

.article-card__img {
    width: 100px;
    height: 100px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--quantum-cyan) 0%, var(--quantum-teal) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.article-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-card__img i {
    font-size: 2rem;
    color: rgba(255,255,255,0.3);
}

.article-card__img--placeholder {
    background: linear-gradient(135deg, var(--quantum-cyan) 0%, var(--quantum-teal) 100%);
}

.article-card__content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-card__tag {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--quantum-cyan);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.article-card__title {
    font-family: var(--font-display);
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--space-900);
    line-height: 1.4;
    margin-bottom: 8px;
    transition: color var(--transition-base);
}

.article-card:hover .article-card__title {
    color: var(--quantum-blue);
}

.article-card__meta {
    font-size: 0.8125rem;
    color: var(--space-500);
}

.articles__more {
    display: flex;
    justify-content: center;
    margin-top: 48px;
}

/* Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.projects {
    padding: 120px 0;
    background: var(--space-50);
    position: relative;
    overflow: hidden;
}

.projects__highlight {
    position: relative;
    padding: 64px;
    background: linear-gradient(135deg, rgba(3,105,161,0.08) 0%, rgba(13,148,136,0.04) 100%);
    border: 1px solid rgba(3,105,161,0.15);
    border-radius: 32px;
    margin-bottom: 48px;
    overflow: hidden;
}

.projects__highlight::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(3,105,161,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.projects__highlight-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    align-items: center;
}

.projects__highlight-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(3,105,161,0.15);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--quantum-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.projects__highlight-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--space-900);
    margin-bottom: 16px;
}

.projects__highlight-desc {
    font-size: 1.125rem;
    color: var(--space-600);
    max-width: 560px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.projects__highlight-stats {
    display: flex;
    gap: 40px;
}

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

.projects__highlight-stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--quantum-blue);
    display: block;
}

.projects__highlight-stat-label {
    font-size: 0.8125rem;
    color: var(--space-500);
}

.projects__highlight-cta {
    display: flex;
    gap: 16px;
    margin-top: 32px;
}

.projects__highlight-visual {
    position: relative;
    width: 200px;
    height: 200px;
}

.projects__highlight-icon {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--quantum-blue) 0%, var(--quantum-teal) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: 0 20px 60px rgba(3,105,161,0.3);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 20px 60px rgba(3,105,161,0.3); }
    50% { box-shadow: 0 30px 80px rgba(3,105,161,0.4); }
}

/* Project Cards */
.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.project-card {
    padding: 32px;
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-slow);
}

.project-card:hover {
    background: var(--space-50);
    border-color: var(--quantum-blue);
    transform: translateY(-4px);
}

.project-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 20px;
}

.project-card__icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-glow);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.project-card__status {
    padding: 6px 12px;
    background: rgba(5,150,105,0.1);
    border-radius: 100px;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--quantum-green);
    text-transform: uppercase;
}

.project-card__status--upcoming {
    background: rgba(217,119,6,0.1);
    color: var(--quantum-amber);
}

.project-card__title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--space-900);
    margin-bottom: 12px;
}

.project-card__desc {
    font-size: 0.9375rem;
    color: var(--space-500);
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-card__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--quantum-blue);
    transition: gap var(--transition-base);
}

.project-card:hover .project-card__link {
    gap: 12px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    padding: 80px 0 32px;
    background: var(--space-900);
    border-top: 1px solid var(--glass-border);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer__brand .logo__text {
    color: white;
}

.footer__brand p {
    font-size: 0.9375rem;
    color: var(--space-400);
    line-height: 1.7;
    margin-top: 20px;
    max-width: 300px;
}

.footer__title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 24px;
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__link {
    font-size: 0.9375rem;
    color: var(--space-400);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--quantum-cyan);
}

.footer__social {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.footer__social a {
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--space-300);
    transition: all var(--transition-base);
}

.footer__social a:hover {
    background: var(--quantum-blue);
    border-color: var(--quantum-blue);
    color: white;
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer__copy {
    font-size: 0.875rem;
    color: var(--space-400);
}

.footer__legal {
    display: flex;
    gap: 24px;
}

.footer__legal a {
    font-size: 0.875rem;
    color: var(--space-400);
    transition: color var(--transition-fast);
}

.footer__legal a:hover {
    color: var(--quantum-cyan);
}

/* ==========================================================================
   SINGLE POST & PAGE
   ========================================================================== */
.single-post,
.page-content {
    padding: 120px 0 80px;
    background: white;
}

.post-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 48px;
    padding-top: var(--header-h);
}

.post-header__category {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(3,105,161,0.1);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--quantum-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.post-header__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--space-900);
    line-height: 1.2;
    margin-bottom: 24px;
}

.post-header__meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    font-size: 0.9375rem;
    color: var(--space-500);
}

.post-header__meta i {
    color: var(--quantum-blue);
    margin-right: 6px;
}

.post-featured-image {
    max-width: 1000px;
    margin: 0 auto 48px;
    border-radius: 20px;
    overflow: hidden;
}

.post-featured-image img {
    width: 100%;
    height: auto;
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
}

.post-content h2,
.post-content h3,
.post-content h4 {
    margin-top: 48px;
    margin-bottom: 20px;
}

.post-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--space-700);
    margin-bottom: 24px;
}

.post-content ul,
.post-content ol {
    margin-bottom: 24px;
    padding-left: 24px;
}

.post-content li {
    margin-bottom: 8px;
    line-height: 1.7;
}

.post-content ul li {
    list-style: disc;
}

.post-content ol li {
    list-style: decimal;
}

.post-content blockquote {
    margin: 32px 0;
    padding: 24px 32px;
    background: var(--space-50);
    border-left: 4px solid var(--quantum-blue);
    border-radius: 0 12px 12px 0;
}

.post-content blockquote p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--space-600);
    margin-bottom: 0;
}

.post-content img {
    border-radius: 12px;
    margin: 32px 0;
}

.post-content a {
    color: var(--quantum-blue);
    text-decoration: underline;
}

.post-content a:hover {
    color: var(--quantum-teal);
}

/* Post Footer */
.post-footer {
    max-width: 800px;
    margin: 48px auto 0;
    padding-top: 32px;
    border-top: 1px solid var(--glass-border);
}

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

.post-tags a {
    padding: 6px 12px;
    background: var(--space-50);
    border-radius: 100px;
    font-size: 0.8125rem;
    color: var(--space-600);
    transition: all var(--transition-fast);
}

.post-tags a:hover {
    background: var(--quantum-blue);
    color: white;
}

/* Post Navigation */
.post-navigation {
    max-width: 800px;
    margin: 48px auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.post-nav-link {
    padding: 24px;
    background: var(--space-50);
    border-radius: 16px;
    transition: all var(--transition-base);
}

.post-nav-link:hover {
    background: var(--space-100);
    transform: translateY(-2px);
}

.post-nav-link__label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--quantum-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    display: block;
}

.post-nav-link__title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--space-900);
}

/* ==========================================================================
   ARCHIVE PAGES
   ========================================================================== */
.archive-header {
    padding-top: calc(var(--header-h) + 60px);
    padding-bottom: 40px;
    text-align: center;
}

.archive-header .section-header {
    margin-bottom: 0;
}

/* ==========================================================================
   404 PAGE
   ========================================================================== */
.error-404 {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--header-h) 24px 80px;
    background: var(--gradient-hero);
}

.error-404__content {
    max-width: 500px;
}

.error-404__code {
    font-family: var(--font-display);
    font-size: clamp(6rem, 20vw, 12rem);
    font-weight: 700;
    background: var(--gradient-glow);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 16px;
}

.error-404__title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--space-900);
    margin-bottom: 16px;
}

.error-404__desc {
    font-size: 1rem;
    color: var(--space-500);
    margin-bottom: 32px;
}

/* ==========================================================================
   NO RESULTS
   ========================================================================== */
.no-results {
    text-align: center;
    padding: 80px 24px;
}

.no-results__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--space-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--space-400);
}

.no-results h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.no-results p {
    color: var(--space-500);
    margin-bottom: 24px;
}

.no-results__actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* ==========================================================================
   PAGINATION
   ========================================================================== */
.pagination,
.nav-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 48px;
}

.pagination .page-numbers,
.nav-links .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    font-weight: 500;
    color: var(--space-700);
    transition: all var(--transition-fast);
}

.pagination .page-numbers:hover,
.nav-links .page-numbers:hover {
    background: var(--space-50);
    border-color: var(--quantum-blue);
    color: var(--quantum-blue);
}

.pagination .page-numbers.current,
.nav-links .page-numbers.current {
    background: var(--gradient-glow);
    border-color: transparent;
    color: white;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .about__grid {
        gap: 48px;
    }
    
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    
    .projects__highlight-content {
        grid-template-columns: 1fr;
    }
    
    .projects__highlight-visual {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        padding: 24px;
        flex-direction: column;
        gap: 24px;
        border-bottom: 1px solid var(--glass-border);
        box-shadow: var(--shadow-card);
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav__list {
        flex-direction: column;
        gap: 16px;
        width: 100%;
    }
    
    .nav__list li {
        width: 100%;
    }
    
    .nav__link {
        display: block;
        padding: 12px 0;
        font-size: 1rem;
    }
    
    .nav__cta {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .about__grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about__content .section-label {
        justify-content: center;
    }
    
    .about__features {
        grid-template-columns: 1fr;
    }
    
    .about__stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-card {
        padding: 24px 16px;
    }
    
    .stat-card__value {
        font-size: 2rem;
    }
    
    .articles__layout {
        grid-template-columns: 1fr;
    }
    
    .article-featured {
        grid-row: auto;
    }
    
    .projects__highlight {
        padding: 32px;
    }
    
    .projects__highlight-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    
    .footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer__bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .footer__legal {
        justify-content: center;
    }
    
    .post-navigation {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero__title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 14px 24px;
        font-size: 0.9375rem;
    }
    
    .article-card {
        flex-direction: column;
    }
    
    .article-card__img {
        width: 100%;
        height: 150px;
    }
    
    .article-card__link {
        flex-direction: column;
    }
}