/* ========================================
   PLX Journal Management System - Frontend
   Modern, Professional Journal Website
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors */
    --primary: #1e3a5f;
    --primary-light: #2a4a73;
    --primary-dark: #142942;
    --primary-gradient: linear-gradient(135deg, #1e3a5f 0%, #2a4a73 100%);

    --gradient-primary: linear-gradient(135deg, #1e3a5f 0%, #3d5a80 100%);

    /* Accent Colors */
    --accent: #0ea5e9;
    --accent-light: #38bdf8;
    --accent-dark: #0284c7;
    --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);

    /* Success/Warning/Danger */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --black: #000000;

    /* Background */
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-hero: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);

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

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition: 300ms ease;
    --transition-slow: 500ms ease;

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

    /* Spacing */
    --container-max: 1280px;
    --header-height: 72px;
    --top-bar-height: 40px;
    --total-header-height: calc(var(--header-height) + var(--top-bar-height));
}

/* Reset & Base */
*,
*::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: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-body);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--bs-heading-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1rem;
}

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

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========================================
   Header & Navigation
   ======================================== */

/* Top Bar */
.header-top-bar {
    background: var(--primary);
    padding: 0.5rem 0;
    font-size: 0.8125rem;
}

.top-bar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: rgba(255, 255, 255, 0.85);
}

.top-bar-info a {
    color: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    gap: 0.375rem;
    transition: color var(--transition-fast);
}

.top-bar-info a:hover {
    color: var(--white);
}

.top-bar-info i {
    font-size: 0.75rem;
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.top-bar-social {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.top-bar-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.top-bar-social a:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.lang-selector {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-selector:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Main Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition);
}

.site-header.has-top-bar {
    top: 0;
}

.header-main {
    background: var(--white);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    position: relative;
}

.site-header.scrolled .header-top-bar {
    display: none;
}

.site-header.scrolled .header-main {
    box-shadow: var(--shadow-lg);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 2rem;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    text-decoration: none;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.site-logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 1.375rem;
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.25);
}

.logo-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.site-logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-logo-text .journal-name {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.025em;
    white-space: nowrap;
}

.site-logo-text .journal-subtitle {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}



/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.125rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.nav-link i {
    font-size: 1rem;
    opacity: 0.7;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--gray-100);
}

.nav-link:hover i {
    opacity: 1;
}

.nav-link.active {
    color: var(--primary);
    background: rgba(30, 58, 95, 0.08);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0.375rem;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

/* Dropdown Menu */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    z-index: 100;
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.nav-dropdown-link:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.nav-dropdown-link i {
    width: 20px;
    text-align: center;
    color: var(--accent);
}

.nav-dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 0.5rem 0;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.header-search:hover {
    background: var(--white);
    border-color: var(--gray-300);
    box-shadow: var(--shadow);
}

.header-search i {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.header-search span {
    color: var(--text-light);
    font-size: 0.8125rem;
}

.header-search kbd {
    padding: 0.125rem 0.375rem;
    background: var(--gray-200);
    color: var(--text-muted);
    font-size: 0.6875rem;
    font-family: var(--font-mono);
    border-radius: var(--radius-sm);
}

.search-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-btn:hover {
    background: var(--gray-200);
    color: var(--primary);
}

.btn-submit-article {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: var(--accent-gradient);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-submit-article:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
    color: var(--white);
}

.btn-submit-article i {
    font-size: 0.875rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 42px;
    height: 42px;
    gap: 5px;
    background: var(--gray-100);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    padding: 0;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background: var(--gray-200);
}

.mobile-menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle.active {
    background: var(--primary);
}

.mobile-menu-toggle.active span {
    background: var(--white);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    position: relative;
    min-height: 600px;
    padding: calc(var(--total-header-height) + 3rem) 0 4rem;
    background: var(--bg-hero);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 4rem;
    align-items: center;
    z-index: 1;
}

.hero-text {
    color: var(--text-inverse);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    animation: fadeInUp 0.6s ease forwards;
}

.hero-badge i {
    font-size: 1rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.2;
    animation: fadeInUp 0.6s ease 0.1s forwards;
    opacity: 0;
}

.hero-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    max-width: 500px;
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease 0.3s forwards;
    opacity: 0;
}

.hero-stat {
    text-align: left;
}

.hero-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
}

.hero-stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 0.25rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 0.6s ease 0.4s forwards;
    opacity: 0;
}

/* Current Issue Card */
.current-issue-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-xl);
    animation: fadeInRight 0.8s ease 0.3s forwards;
    opacity: 0;
}

.issue-cover-wrapper {
    position: relative;
    margin-bottom: 1.25rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.issue-cover {
    width: 100%;
    height: 380px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.issue-cover-wrapper:hover .issue-cover {
    transform: scale(1.05);
}

.issue-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.375rem 0.875rem;
    background: var(--accent-gradient);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.issue-info {
    text-align: center;
}

.issue-info h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.375rem;
}

.issue-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.issue-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.issue-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: var(--primary-gradient);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

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

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(30, 58, 95, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 58, 95, 0.4);
    color: var(--white);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-accent {
    background: var(--accent-gradient);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
    color: var(--white);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ========================================
   Section Styles
   ======================================== */
.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.875rem;
    background: var(--accent-gradient);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.section-header-alt {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.section-header-alt .section-title {
    margin-bottom: 0;
    font-size: 1.75rem;
}

/* ========================================
   Article Cards
   ======================================== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.article-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--gray-200);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-300);
}

.article-card-body {
    padding: 1.5rem;
}

.article-category {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    background: rgba(14, 165, 233, 0.1);
    color: var(--accent-dark);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.article-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

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

.article-authors {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-abstract {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.article-meta-item i {
    font-size: 0.875rem;
    color: var(--text-light);
}

.article-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
}

.article-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    background: var(--gray-100);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.article-action-btn:hover {
    background: var(--primary);
    color: var(--white);
}

/* Featured Article */
.article-card.featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.article-card.featured .article-image {
    height: 100%;
}

.article-card.featured .article-card-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-card.featured .article-title {
    font-size: 1.5rem;
    -webkit-line-clamp: 3;
}

.article-card.featured .article-abstract {
    -webkit-line-clamp: 5;
}

/* Article Image */
.article-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

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

/* ========================================
   News Section
   ======================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.news-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--gray-200);
}

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

.news-image {
    height: 180px;
    overflow: hidden;
}

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

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

.news-body {
    padding: 1.25rem;
}

.news-date {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.news-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.news-title a {
    color: inherit;
    text-decoration: none;
}

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

.news-excerpt {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========================================
   About Section
   ======================================== */
.about-section {
    background: var(--gray-50);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.about-feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    color: var(--white);
    border-radius: var(--radius);
    flex-shrink: 0;
}

.about-feature h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.about-feature p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.about-stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

.about-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.about-stat-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
}

.about-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.about-stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ========================================
   Archive Page
   ======================================== */
.page-header {
    padding: calc(var(--header-height) + 3rem) 0 3rem;
    background: var(--bg-hero);
    color: var(--text-inverse);
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.7);
}

.archive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.archive-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--gray-200);
}

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

.archive-cover {
    height: 200px;
    overflow: hidden;
    position: relative;
}

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

.archive-card:hover .archive-cover img {
    transform: scale(1.05);
}

.archive-body {
    padding: 1.25rem;
    text-align: center;
}

.archive-year {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 0.25rem;
}

.archive-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.archive-meta {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Year Filter */
.year-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.year-btn {
    padding: 0.5rem 1rem;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.year-btn:hover,
.year-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* ========================================
   Article Detail Page
   ======================================== */
.article-detail-header {
    padding: calc(var(--header-height) + 3rem) 0 2rem;
    background: var(--bg-hero);
}

.article-detail-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.article-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.article-detail-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.article-detail-meta-item i {
    color: var(--accent);
}

.article-detail-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.article-detail-authors {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.author-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
}

.author-badge i {
    font-size: 0.75rem;
}

.article-actions-bar {
    display: flex;
    gap: 0.75rem;
}

.article-content {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.article-content h2 {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    margin: 2.5rem 0 1rem;
    color: var(--primary);
}

.article-content h3 {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    margin: 2rem 0 0.75rem;
}

.article-content p {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.article-content figure {
    margin: 2rem 0;
    text-align: center;
}

.article-content figure img {
    max-width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.article-content figcaption {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
}

.article-content blockquote {
    margin: 2rem 0;
    padding: 1.5rem 2rem;
    background: var(--gray-50);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    font-style: italic;
}

/* Article Sidebar */
.article-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 2rem);
}

.sidebar-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-200);
}

.keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.keyword-tag {
    padding: 0.25rem 0.625rem;
    background: var(--gray-100);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.keyword-tag:hover {
    background: var(--primary);
    color: var(--white);
}

/* ============================================
   Login Page Styles
   ============================================ */

/* Login Page Layout */
.login-page {
    min-height: 100vh;
    display: flex;
    background: var(--bg-body);
    background-image: var(--bg-mesh);
    margin-top: 7rem;
}

.login-left {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.login-right {
    flex: 1;
    display: none;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

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

.input-with-icon>i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
    z-index: 1;
}

.input-with-icon .form-control {
    padding-left: 42px;
}

/* Password Input */
.password-input .form-control {
    padding-right: 46px;
}

.btn-toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-toggle-password:hover {
    color: var(--accent-primary);
}

/* Password Strength */
.password-strength {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}

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

/* Login Card */
.login-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    padding: 48px 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-logo {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.login-logo-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
}

.login-logo-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.login-logo-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.login-logo-name span {
    color: var(--accent-primary);
}

.login-logo-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px;
}

.login-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 0;
}

/* Login Form */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.login-form .form-group {
    margin: 0;
}

.login-form .form-label {
    margin-bottom: 8px;
}

/* Remember Me & Forgot Password */
.login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.remember-me input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
}

.forgot-link:hover {
    text-decoration: underline;
}

/* Login Button */
.btn-login {
    width: 100%;
    padding: 14px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-login:active {
    transform: translateY(0);
}

.social-login-buttons {
    display: flex;
    gap: 12px;
}

.btn-social {
    flex: 1;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card-solid);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.btn-social:hover {
    border-color: var(--accent-primary);
    background: var(--accent-light);
}

.btn-social i {
    font-size: 1.25rem;
}

.btn-social.google i {
    color: #ea4335;
}

.btn-social.microsoft i {
    color: #00a4ef;
}

/* Social Login */
.login-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 8px 0;
}

.login-divider span {
    font-size: 0.875rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.social-login-buttons {
    display: flex;
    gap: 12px;
}

.btn-social {
    flex: 1;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card-solid);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.btn-social:hover {
    border-color: var(--accent-primary);
    background: var(--accent-light);
}

.btn-social i {
    font-size: 1.25rem;
}

.btn-social.google i {
    color: #ea4335;
}

.btn-social.microsoft i {
    color: #00a4ef;
}

/* Login Footer */
.login-footer {
    text-align: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.login-footer p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

.login-footer a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Login Right Content */
.login-illustration {
    text-align: center;
    color: var(--white);
    padding: 40px;
    max-width: 500px;
}

.login-illustration-icon {
    width: 200px;
    height: 200px;
    margin: 0 auto 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.login-illustration h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 16px;
}

.login-illustration p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin: 0;
    line-height: 1.6;
}

/* Login Right Pattern */
.login-right::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

/* Floating Shapes */
.floating-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite;
}

.floating-shape:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-shape:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    left: 70%;
    animation-delay: -5s;
}

.floating-shape:nth-child(3) {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: -10s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-30px) rotate(180deg);
    }
}

/* Login Form Errors */
.form-error {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    color: #ef4444;
    font-size: 0.875rem;
}

.form-error i {
    font-size: 1rem;
}

/* Login Page Responsive */
@media (max-width: 768px) {
    .login-card {
        padding: 32px 24px;
        margin: 20px;
    }

    .login-logo {
        flex-direction: column;
        text-align: center;
    }

    .login-logo-text {
        align-items: center;
    }

    .social-login-buttons {
        flex-direction: column;
    }
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 4rem 0 0;
    overflow-x: hidden;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--gray-800);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo img {
    height: 40px;
}

.footer-logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--white);
}

.footer-description {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    color: var(--gray-400);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.footer-social-link:hover {
    background: var(--accent);
    color: var(--white);
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 1.25rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.9375rem;
    overflow-wrap: break-word;
    word-break: break-word;
}

.footer-contact-item i {
    color: var(--accent);
    margin-top: 0.25rem;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 0;
    font-size: 0.875rem;
}

.footer-bottom-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    justify-content: center;
}

.footer-bottom-links a {
    color: var(--gray-500);
}

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

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* Scroll Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-delay-1 {
    transition-delay: 0.1s;
}

.animate-delay-2 {
    transition-delay: 0.2s;
}

.animate-delay-3 {
    transition-delay: 0.3s;
}

.animate-delay-4 {
    transition-delay: 0.4s;
}

/* ========================================
   Search Modal
   ======================================== */
.search-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

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

.search-modal-content {
    width: 100%;
    max-width: 600px;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform var(--transition);
}

.search-modal.active .search-modal-content {
    transform: translateY(0);
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    border-bottom: 1px solid var(--gray-200);
}

.search-input-wrapper i {
    font-size: 1.25rem;
    color: var(--text-muted);
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1.125rem;
    color: var(--text-primary);
    background: transparent;
}

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

.search-results {
    max-height: 400px;
    overflow-y: auto;
}

.search-result-item {
    display: block;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
}

.search-result-item:hover {
    background: var(--gray-50);
}

.search-result-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.search-result-excerpt {
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

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

    100% {
        background-position: -200% 0;
    }
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1200px) {
    .hero-content {
        grid-template-columns: 1fr 280px;
        gap: 3rem;
    }

    .issue-cover {
        height: 340px;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .footer-grid>div:last-child {
        grid-column: span 3;
    }
}

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .current-issue-card {
        max-width: 300px;
        margin: 0 auto;
    }

    .issue-cover {
        height: 360px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem 2rem;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .header-search {
        display: none;
    }

    .search-btn {
        display: flex;
    }

    .btn-submit-article span {
        display: none;
    }

    .btn-submit-article {
        padding: 0.625rem;
        border-radius: var(--radius-md);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .header-top-bar {
        display: none;
    }

    .header-inner {
        height: 64px;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
        font-size: 1.125rem;
    }

    .site-logo-text .journal-name {
        font-size: 1.0625rem;
    }

    .site-logo-text .journal-subtitle {
        display: none;
    }

    .main-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1.5rem;
        overflow-y: auto;
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
        gap: 0.25rem;
    }

    .main-nav.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: 1rem 1.25rem;
        border-radius: var(--radius-md);
        background: var(--gray-50);
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-link.active {
        background: rgba(30, 58, 95, 0.1);
    }

    .nav-dropdown {
        position: static;
        opacity: 0;
        visibility: hidden;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 1rem;
        margin-top: 0.5rem;
        max-height: 0;
        overflow: hidden;
        transition: all var(--transition);
    }

    .nav-item.open .nav-dropdown {
        opacity: 1;
        visibility: visible;
        max-height: 500px;
    }

    .nav-item.has-dropdown .nav-link {
        cursor: pointer;
    }

    .nav-item.has-dropdown .nav-link .fa-chevron-down {
        transition: transform var(--transition);
    }

    .nav-item.has-dropdown.open .nav-link .fa-chevron-down {
        transform: rotate(180deg);
    }

    .btn-submit-article {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-section {
        min-height: auto;
        padding: calc(var(--header-height) + 2rem) 0 3rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

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

    .article-card.featured {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

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

    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .footer-brand {
        grid-column: span 1;
        max-width: 100%;
    }

    .footer-title {
        font-size: 0.9375rem;
    }

    .footer-links a {
        font-size: 0.875rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .page-title {
        font-size: 1.75rem;
    }

    .article-detail-title {
        font-size: 1.5rem;
    }
}

/* ========================================
   Utilities
   ======================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mt-3 {
    margin-top: 1.5rem;
}

.mt-4 {
    margin-top: 2rem;
}

.mt-5 {
    margin-top: 3rem;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}

.mb-4 {
    margin-bottom: 2rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.py-1 {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.py-2 {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.py-3 {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
}

.py-4 {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.py-5 {
    padding-top: 3rem;
    padding-bottom: 3rem;
}

.d-flex {
    display: flex;
}

.d-grid {
    display: grid;
}

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.align-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 {
    gap: 0.5rem;
}

.gap-2 {
    gap: 1rem;
}

.gap-3 {
    gap: 1.5rem;
}

.gap-4 {
    gap: 2rem;
}

.w-100 {
    width: 100%;
}

.h-100 {
    height: 100%;
}