/* Academic Research Journal Website Styles */

/* CSS Reset and Base Styles */
:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-blue-300: rgba(147, 197, 253, 1);
  --color-blue-500: rgba(59, 130, 246, 1);
  --color-blue-600: rgba(37, 99, 235, 1);
  --color-blue-700: rgba(29, 78, 216, 1);
  --color-blue-800: rgba(30, 64, 175, 1);

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-blue-600);
  --color-primary-hover: var(--color-blue-700);
  --color-secondary: var(--color-blue-500);
  --color-accent: var(--color-blue-300);
  --color-border: var(--color-gray-300);
  --color-border-light: var(--color-gray-200);

  /* Typography */
  --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-serif: Georgia, 'Times New Roman', serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* Dark Mode Color Overrides */
[data-theme="dark"] {
  --color-background: var(--color-charcoal-800);
  --color-surface: var(--color-charcoal-700);
  --color-text: var(--color-cream-100);
  --color-text-secondary: var(--color-gray-300);
  --color-primary: var(--color-blue-500);
  --color-primary-hover: var(--color-blue-400);
  --color-secondary: var(--color-blue-600);
  --color-accent: var(--color-blue-300);
  --color-border: var(--color-gray-400);
  --color-border-light: var(--color-slate-500);
}

/* CSS Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-serif);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  gap: var(--spacing-xs);
}

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

.btn--lg {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

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

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

.btn--secondary {
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
}

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

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

/* Form Elements */
.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control--sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text);
}

/* Header */
.header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color var(--transition-normal);
}

.nav {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.nav__brand {
  flex: 1;
  min-width: 300px;
}

.nav__title {
  font-size: var(--font-size-2xl);
  margin: 0;
  color: var(--color-primary);
}

.nav__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: var(--spacing-xs) 0 0 0;
  font-style: italic;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.nav__controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav__auth {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.theme-icon {
  font-size: var(--font-size-base);
}

.nav__menu-container {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.nav__menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  padding: var(--spacing-md) 0;
  margin: 0;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.nav__menu a {
  color: var(--color-white);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav__menu a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.nav__search {
  display: flex;
  min-width: 300px;
}

.search-form {
  display: flex;
  width: 100%;
  gap: var(--spacing-xs);
}

.search-form .form-control {
  flex: 1;
  border-color: rgba(255, 255, 255, 0.3);
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.search-form .form-control::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.search-form .btn {
  background-color: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--color-white);
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(37, 99, 235, 0.1) 100%);
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero__info h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.hero__info p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.journal-metrics {
  display: flex;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.metric {
  text-align: center;
}

.metric__value {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
}

.metric__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.featured-issue {
  display: flex;
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  gap: var(--spacing-lg);
  align-items: center;
}

.issue-cover {
  flex-shrink: 0;
}

.cover-placeholder {
  width: 120px;
  height: 160px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 600;
  text-align: center;
  font-size: var(--font-size-sm);
}

.issue-info h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.issue-info p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin: 0;
}

/* Sections */
section {
  padding: var(--spacing-3xl) 0;
}

section:nth-child(even) {
  background-color: var(--color-surface);
}

/* Current Issue Section */
.current-issue {
  background-color: var(--color-surface);
}

.articles-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

/* Article Cards */
.article-card {
  background-color: var(--color-background);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.article-card h3 {
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-xl);
}

.article-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.article-tags {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.tag {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.abstract {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.article-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* Recent Articles */
.recent-articles {
  padding: var(--spacing-3xl) 0;
}

.articles-filter {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-3xl);
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: 2px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

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

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-2xl);
}

/* About Section */
.about {
  background-color: var(--color-surface);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.journal-details h3 {
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

.pub-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.info-item {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.journal-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.stat-card {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.stat-card h3 {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.stat-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Editorial Board */
.editorial-board {
  padding: var(--spacing-3xl) 0;
}

.board-structure {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3xl);
}

.editor-in-chief,
.associate-editors,
.board-members {
  background-color: var(--color-surface);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
}

.editor-in-chief h3,
.associate-editors h3,
.board-members h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.editor-card {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.editors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.editor-card h4 {
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.affiliation {
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.expertise {
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.contact-link {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
}

.members-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.members-list li {
  background-color: var(--color-background);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
}

/* Submission Guidelines */
.submission-guidelines {
  background-color: var(--color-surface);
}

.guidelines-nav {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-2xl);
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.guideline-tab {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.guideline-tab.active,
.guideline-tab:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.guideline-panel {
  display: none;
}

.guideline-panel.active {
  display: block;
}

.manuscript-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.type-card {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.type-card h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.format-list {
  list-style: none;
  padding-left: 0;
}

.format-list li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
}

.format-list li:before {
  content: "✓ ";
  color: var(--color-primary);
  font-weight: 600;
  margin-right: var(--spacing-sm);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.step {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.step h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.submission-form {
  background-color: var(--color-background);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.manuscript-form {
  max-width: 600px;
}

/* Archives */
.archives {
  padding: var(--spacing-3xl) 0;
}

.archives-search {
  background-color: var(--color-surface);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-3xl);
}

.advanced-search {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.search-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.archives-results {
  background-color: var(--color-surface);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.sort-options {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.result-item {
  background-color: var(--color-background);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.result-item h4 {
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.result-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.result-abstract {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.result-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-2xl);
  flex-wrap: wrap;
}

.page-numbers {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
}

/* Announcements */
.announcements {
  background-color: var(--color-surface);
}

.announcements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.announcement-card {
  background-color: var(--color-background);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.announcement-card.featured {
  border: 3px solid var(--color-primary);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(37, 99, 235, 0.1) 100%);
}

.announcement-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
}

.announcement-card h3 {
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
}

.announcement-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.deadline {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

/* Contact */
.contact {
  padding: var(--spacing-3xl) 0;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.contact-item h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.contact-item p {
  color: var(--color-text-secondary);
}

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

.social-links a {
  font-size: var(--font-size-xl);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast);
}

.social-links a:hover {
  transform: scale(1.1);
}

.contact-form {
  background-color: var(--color-surface);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.contact-form h4 {
  color: var(--color-text);
  margin-bottom: var(--spacing-xl);
}

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

/* Footer */
.footer {
  background-color: var(--color-surface);
  border-top: 2px solid var(--color-border-light);
  padding: var(--spacing-3xl) 0 var(--spacing-xl) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.footer-section ul li a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-legal {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  animation: fadeIn var(--transition-normal);
}

.modal.active {
  display: block;
}

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

.modal-content {
  background-color: var(--color-surface);
  margin: 5% auto;
  width: 90%;
  max-width: 800px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  max-height: 80vh;
  overflow-y: auto;
  animation: slideIn var(--transition-normal);
}

@keyframes slideIn {
  from { 
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--spacing-2xl);
  border-bottom: 2px solid var(--color-border-light);
}

.modal-header h2 {
  margin: 0;
  color: var(--color-text);
  font-size: var(--font-size-2xl);
  flex: 1;
  margin-right: var(--spacing-lg);
}

.modal-close {
  font-size: var(--font-size-3xl);
  font-weight: bold;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  background: none;
  border: none;
  padding: 0;
  line-height: 1;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-body {
  padding: var(--spacing-2xl);
}

.modal-body .article-meta {
  margin-bottom: var(--spacing-2xl);
}

.modal-body .article-meta p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

.modal-body .article-tags {
  margin-bottom: var(--spacing-2xl);
}

.modal-body .article-content h3 {
  color: var(--color-primary);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
}

.modal-body .article-content p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  text-align: justify;
}

.modal-footer {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-2xl);
  border-top: 2px solid var(--color-border-light);
  flex-wrap: wrap;
}

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

  .nav {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-lg);
  }

  .nav__brand {
    min-width: auto;
  }

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

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

  .nav__menu {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .nav__search {
    min-width: auto;
  }

  .hero__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .hero__info h2 {
    font-size: var(--font-size-3xl);
  }

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

  .hero__actions {
    justify-content: center;
  }

  .featured-issue {
    flex-direction: column;
    text-align: center;
  }

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

  .contact-content {
    grid-template-columns: 1fr;
  }

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

  .search-fields {
    grid-template-columns: 1fr;
  }

  .results-header {
    flex-direction: column;
    align-items: stretch;
  }

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

  .modal-content {
    margin: 2% auto;
    width: 95%;
  }

  .modal-header {
    padding: var(--spacing-lg);
  }

  .modal-body {
    padding: var(--spacing-lg);
  }

  .modal-footer {
    padding: var(--spacing-lg);
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .articles-filter {
    flex-direction: column;
    align-items: center;
  }

  .guidelines-nav {
    flex-direction: column;
  }

  .pagination {
    flex-direction: column;
  }

  .page-numbers {
    flex-wrap: wrap;
    justify-content: center;
  }

  .announcement-card,
  .article-card {
    padding: var(--spacing-lg);
  }

  .article-actions,
  .result-actions {
    flex-direction: column;
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .hero,
  .nav__menu-container {
    display: none;
  }

  body {
    color: black;
    background: white;
  }

  .article-card,
  .modal-content {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .btn {
    display: none;
  }
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000;
    --color-border-light: #666;
  }

  [data-theme="dark"] {
    --color-border: #fff;
    --color-border-light: #ccc;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-control:focus,
.nav__menu a:focus,
.filter-btn:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

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