/* ============================================
   Bloggin - Modern Blogging Platform
   Advanced Color Theme & Global Styles
   ============================================ */

/* CSS Custom Properties - Theme Variables */
:root {
    /* Color Palette - Light Theme */
    --color-primary: #0a0a0a;
    --color-primary-foreground: #fafafa;
    --color-secondary: #f5f5f5;
    --color-secondary-foreground: #171717;
    --color-accent: #64CCC5;
    --color-accent-foreground: #0a0a0a;
    
    --color-background: #ffffff;
    --color-foreground: #0a0a0a;
    --color-muted: #f5f5f5;
    --color-muted-foreground: #737373;
    --color-card: #ffffff;
    --color-card-foreground: #0a0a0a;
    --color-border: #e5e5e5;
    --color-ring: #0a0a0a;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
    
    /* Header Height */
    --header-height: 72px;
}

/* Dark Theme */
[data-theme="dark"] {
    --color-primary: #fafafa;
    --color-primary-foreground: #0a0a0a;
    --color-secondary: #262626;
    --color-secondary-foreground: #fafafa;
    --color-accent: #64CCC5;
    --color-accent-foreground: #0a0a0a;
    
    --color-background: #0a0a0a;
    --color-foreground: #fafafa;
    --color-muted: #171717;
    --color-muted-foreground: #a3a3a3;
    --color-card: #171717;
    --color-card-foreground: #fafafa;
    --color-border: #262626;
    --color-ring: #fafafa;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

/* ============================================
   Reset & Base Styles
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-foreground);
    background-color: var(--color-background);
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ============================================
   Container
   ============================================ */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-foreground);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-foreground);
}

.btn-outline:hover {
    background-color: var(--color-muted);
    border-color: var(--color-muted-foreground);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-muted-foreground);
}

.btn-ghost:hover {
    color: var(--color-foreground);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-base);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-muted-foreground);
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background-color: var(--color-muted);
    color: var(--color-foreground);
}

/* ============================================
   Header
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.header.scrolled {
    background-color: rgba(var(--color-background), 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header .container {
    height: var(--header-height);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--color-primary);
    color: var(--color-primary-foreground);
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: var(--text-lg);
    border-radius: var(--radius-md);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-foreground);
}

/* Nav Links */
.nav-links {
    display: none;
    align-items: center;
    gap: var(--spacing-1);
}

@media (min-width: 1024px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-muted-foreground);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-foreground);
    background-color: var(--color-muted);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.header-actions .btn-primary {
    display: none;
}

@media (min-width: 768px) {
    .header-actions .btn-primary {
        display: inline-flex;
    }
}

/* Theme Toggle */
.theme-toggle .sun-icon {
    display: none;
}

.theme-toggle .moon-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
}

@media (min-width: 1024px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.hamburger {
    position: relative;
    width: 20px;
    height: 2px;
    background-color: var(--color-foreground);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-foreground);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    bottom: -6px;
}

.mobile-menu-toggle.active .hamburger {
    background-color: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-background);
    padding: var(--spacing-6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: 99;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (min-width: 1024px) {
    .mobile-menu {
        display: none;
    }
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-6);
}

.mobile-nav-link {
    padding: var(--spacing-4);
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-muted-foreground);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--color-foreground);
    background-color: var(--color-muted);
}

/* ============================================
   Search Modal
   ============================================ */

.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 20vh;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 200;
}

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

.search-modal-content {
    width: 100%;
    max-width: 600px;
    margin: 0 var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.search-input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    background-color: var(--color-card);
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.search-input-wrapper svg {
    color: var(--color-muted-foreground);
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    font-size: var(--text-lg);
    background: none;
    border: none;
    outline: none;
    color: var(--color-foreground);
}

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

.search-shortcut {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-muted-foreground);
    background-color: var(--color-muted);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
}

.search-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-card);
    color: var(--color-muted-foreground);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.search-close:hover {
    background-color: var(--color-muted);
    color: var(--color-foreground);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at top, var(--color-accent) 0%, transparent 50%);
    opacity: 0.1;
}

[data-theme="dark"] .hero-gradient {
    opacity: 0.15;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-16) 0;
}

.hero-label {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-6);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--text-6xl);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: var(--text-7xl);
    }
}

.hero-title-line {
    display: block;
}

.hero-title-line.highlight {
    color: var(--color-accent);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-muted-foreground);
    max-width: 600px;
    margin: 0 auto var(--spacing-8);
    line-height: 1.7;
}

@media (min-width: 768px) {
    .hero-description {
        font-size: var(--text-xl);
    }
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    justify-content: center;
    margin-bottom: var(--spacing-12);
}

@media (min-width: 640px) {
    .hero-actions {
        flex-direction: row;
    }
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .hero-stats {
        gap: var(--spacing-10);
    }
}

.stat {
    text-align: center;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-foreground);
}

@media (min-width: 768px) {
    .stat-number {
        font-size: var(--text-4xl);
    }
}

.stat-suffix {
    font-family: var(--font-serif);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-accent);
}

@media (min-width: 768px) {
    .stat-suffix {
        font-size: var(--text-3xl);
    }
}

.stat-label {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-muted-foreground);
    margin-top: var(--spacing-1);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: var(--color-border);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--spacing-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-muted-foreground);
    font-size: var(--text-sm);
    animation: bounce 2s infinite;
}

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

.scroll-arrow {
    animation: fadeInOut 2s infinite;
}

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

/* ============================================
   Sections
   ============================================ */

.section {
    padding: var(--spacing-16) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-24) 0;
    }
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-10);
}

.section-header-center {
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.section-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-2);
}

.section-title {
    font-size: var(--text-2xl);
    font-weight: 600;
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--text-3xl);
    }
}

/* ============================================
   Posts Grid
   ============================================ */

.posts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Post Card */
.post-card {
    position: relative;
    background-color: var(--color-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.post-card-large {
    grid-column: 1 / -1;
}

@media (min-width: 768px) {
    .post-card-large {
        grid-column: span 2;
    }
}

@media (min-width: 1024px) {
    .post-card-large {
        grid-column: span 2;
        display: grid;
        grid-template-columns: 1.2fr 1fr;
    }
}

.post-card-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.post-card-large .post-card-image {
    aspect-ratio: 16/9;
}

@media (min-width: 1024px) {
    .post-card-large .post-card-image {
        aspect-ratio: auto;
        height: 100%;
    }
}

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

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

.post-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.3));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.post-card:hover .post-card-overlay {
    opacity: 1;
}

.post-card-content {
    padding: var(--spacing-5);
}

@media (min-width: 1024px) {
    .post-card-large .post-card-content {
        padding: var(--spacing-8);
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.post-category {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
}

.post-date {
    font-size: var(--text-xs);
    color: var(--color-muted-foreground);
}

.post-card-title {
    font-family: var(--font-serif);
    font-size: var(--text-lg);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-3);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-large .post-card-title {
    font-size: var(--text-xl);
    -webkit-line-clamp: 3;
}

@media (min-width: 768px) {
    .post-card-large .post-card-title {
        font-size: var(--text-2xl);
    }
}

.post-card-excerpt {
    font-size: var(--text-sm);
    color: var(--color-muted-foreground);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--color-border);
}

.post-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.author-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.author-name {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-foreground);
}

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

/* ============================================
   Categories Section
   ============================================ */

.categories-section {
    background-color: var(--color-muted);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-6);
    background-color: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.category-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background-color: var(--color-muted);
    border-radius: var(--radius-lg);
    color: var(--color-accent);
    margin-bottom: var(--spacing-4);
    transition: all var(--transition-base);
}

.category-card:hover .category-icon {
    background-color: var(--color-accent);
    color: var(--color-accent-foreground);
}

.category-name {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

.category-count {
    font-size: var(--text-xs);
    color: var(--color-muted-foreground);
}

/* ============================================
   Newsletter Section
   ============================================ */

.newsletter-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    text-align: center;
}

@media (min-width: 768px) {
    .newsletter-card {
        padding: var(--spacing-12);
    }
}

.newsletter-content {
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

@media (min-width: 768px) {
    .newsletter-title {
        font-size: var(--text-3xl);
    }
}

.newsletter-description {
    font-size: var(--text-base);
    color: var(--color-muted-foreground);
    margin-bottom: var(--spacing-6);
}

.newsletter-form {
    max-width: 400px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

@media (min-width: 640px) {
    .form-group {
        flex-direction: row;
    }
}

.form-input {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--text-base);
    background-color: var(--color-muted);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-foreground);
    outline: none;
    transition: all var(--transition-fast);
}

.form-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(100, 204, 197, 0.2);
}

.form-input::placeholder {
    color: var(--color-muted-foreground);
}

.form-note {
    font-size: var(--text-xs);
    color: var(--color-muted-foreground);
    margin-top: var(--spacing-3);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--color-muted);
    padding: var(--spacing-16) 0 var(--spacing-8);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 280px;
}

@media (min-width: 640px) {
    .footer-brand {
        grid-column: span 2;
    }
}

@media (min-width: 1024px) {
    .footer-brand {
        grid-column: span 1;
    }
}

.footer-brand .logo {
    margin-bottom: var(--spacing-4);
}

.footer-description {
    font-size: var(--text-sm);
    color: var(--color-muted-foreground);
    line-height: 1.7;
    margin-bottom: var(--spacing-5);
}

.social-links {
    display: flex;
    gap: var(--spacing-2);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-card);
    color: var(--color-muted-foreground);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: var(--color-primary-foreground);
    border-color: var(--color-primary);
}

.footer-links-title {
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-foreground);
    margin-bottom: var(--spacing-4);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-muted-foreground);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-muted-foreground);
}

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-6);
}

.footer-bottom-links a {
    font-size: var(--text-sm);
    color: var(--color-muted-foreground);
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--color-foreground);
}

/* ============================================
   Back to Top Button
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-primary-foreground);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 50;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   Animations
   ============================================ */

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

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Stagger animations for children */
.animate-stagger > * {
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}

.animate-stagger > *:nth-child(1) { animation-delay: 0.1s; }
.animate-stagger > *:nth-child(2) { animation-delay: 0.2s; }
.animate-stagger > *:nth-child(3) { animation-delay: 0.3s; }
.animate-stagger > *:nth-child(4) { animation-delay: 0.4s; }
.animate-stagger > *:nth-child(5) { animation-delay: 0.5s; }
.animate-stagger > *:nth-child(6) { animation-delay: 0.6s; }

/* ============================================
   Utility Classes
   ============================================ */

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


/* ============================================
   BLOG DETAIL PAGE
============================================ */

/* MAIN */

.blog-main{
padding-top:var(--header-height);
}



/* HERO */

.blog-hero{
text-align:center;
padding:var(--spacing-16) 0 var(--spacing-8);
}

.blog-hero-container{
max-width:760px;
}

.blog-meta{
display:flex;
justify-content:center;
gap:var(--spacing-3);
margin-bottom:var(--spacing-4);
}

.blog-title{
font-size:var(--text-4xl);
font-family:var(--font-serif);
font-weight:700;
line-height:1.2;
margin-bottom:var(--spacing-4);
}

@media(min-width:768px){

.blog-title{
font-size:var(--text-5xl);
}

}

.blog-subtitle{
font-size:var(--text-lg);
color:var(--color-muted-foreground);
margin-bottom:var(--spacing-6);
}

.blog-author{
display:flex;
align-items:center;
justify-content:center;
gap:var(--spacing-3);
}

.author-avatar{
width:40px;
height:40px;
border-radius:var(--radius-full);
object-fit:cover;
}



/* FEATURE IMAGE */

.blog-featured-image{
margin-bottom:var(--spacing-10);
}

.blog-image-wrapper{
border-radius:var(--radius-xl);
overflow:hidden;
}

.blog-image-wrapper img{
width:100%;
height:auto;
display:block;
}



/* CONTENT LAYOUT */

.blog-layout{
display:grid;
grid-template-columns:1fr;
gap:var(--spacing-12);
}

@media(min-width:1024px){

.blog-layout{
grid-template-columns:3fr 1fr;
align-items:start;
}

}



/* BLOG CONTENT */

.blog-content{
max-width:720px;
font-size:var(--text-lg);
line-height:1.8;
}

.blog-content p{
margin-bottom:var(--spacing-4);
}

.blog-content h2{
margin-top:var(--spacing-8);
margin-bottom:var(--spacing-3);
font-size:var(--text-2xl);
font-family:var(--font-serif);
}

.blog-content ul{
margin-bottom:var(--spacing-4);
padding-left:20px;
list-style:disc;
}

.blog-content blockquote{
border-left:4px solid var(--color-accent);
padding-left:var(--spacing-4);
margin:var(--spacing-6) 0;
font-style:italic;
color:var(--color-muted-foreground);
}



/* SIDEBAR */

.blog-sidebar{
display:flex;
flex-direction:column;
gap:var(--spacing-6);
position:sticky;
top:100px;
height:fit-content;
}

.sidebar-card{
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:var(--radius-lg);
padding:var(--spacing-5);
}



/* AUTHOR CARD */

.author-card{
text-align:center;
}

.author-avatar-lg{
width:80px;
height:80px;
border-radius:var(--radius-full);
object-fit:cover;
margin-bottom:var(--spacing-3);
}

.author-bio{
font-size:var(--text-sm);
color:var(--color-muted-foreground);
margin:var(--spacing-3) 0;
}

.author-social{
display:flex;
justify-content:center;
gap:var(--spacing-2);
}



/* NEWSLETTER */

.newsletter-text{
font-size:var(--text-sm);
color:var(--color-muted-foreground);
margin-bottom:var(--spacing-3);
}

.sidebar-newsletter{
display:flex;
flex-direction:column;
gap:var(--spacing-3);
}



/* SIDEBAR POSTS */

.sidebar-post{
display:flex;
gap:var(--spacing-3);
align-items:center;
margin-bottom:var(--spacing-3);
}

.sidebar-post img{
width:70px;
height:50px;
object-fit:cover;
border-radius:var(--radius-sm);
}

.sidebar-post-title{
font-size:var(--text-sm);
font-weight:500;
line-height:1.4;
}



/* TAGS */

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

.tag{
font-size:var(--text-xs);
padding:6px 10px;
background:var(--color-muted);
border-radius:var(--radius-full);
cursor:pointer;
transition:var(--transition-fast);
}

.tag:hover{
background:var(--color-accent);
color:var(--color-accent-foreground);
}



/* RELATED POSTS */

.related-posts{
background:var(--color-background);
}



/* MOBILE FIXES */

@media(max-width:1024px){

.blog-sidebar{
position:relative;
top:auto;
}

.blog-content{
max-width:100%;
}

}