/* Global Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --secondary-color: #64748b;
  --secondary-dark: #475569;
  --text-color: #0f172a;
  --text-light: #475569;
  --text-lighter: #64748b;
  --bg-color: #ffffff;
  --bg-light: #f8fafc;
  --bg-lighter: #f1f5f9;
  --border-color: #e2e8f0;
  --danger-color: #dc2626;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 1px 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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: all 0.2s ease;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-lighter) 100%);
  color: var(--text-color);
  line-height: 1.6;
  letter-spacing: -0.5px;
}

.modal-open {
  overflow: hidden;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navbar */
.navbar {
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.8);
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  filter: drop-shadow(0 0 8px rgba(37, 99, 235, 0.3));
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
  width: 100%;
}

/* Main Content */
.main-content {
  padding: 2rem 0;
  min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 5rem 2rem;
  margin-bottom: 4rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  top: -100px;
  right: -100px;
  pointer-events: none;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  letter-spacing: -1px;
  position: relative;
  z-index: 1;
}

.hero p {
  font-size: 1.3rem;
  color: var(--text-light);
  position: relative;
  z-index: 1;
  font-weight: 500;
}

/* Search Form */
.search-form {
  margin-top: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.search-form > div {
  display: flex;
  gap: 0.5rem;
}

.search-form input[type="search"] {
  flex: 1;
  padding: 0.875rem 1.25rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 1rem;
  background: var(--bg-color);
  transition: var(--transition);
  outline: none;
}

.search-form input[type="search"]:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-form button[type="submit"] {
  padding: 0.875rem 1.75rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  white-space: nowrap;
}

.search-form button[type="submit"]:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.search-form a {
  padding: 0.875rem 1.25rem;
  background: var(--secondary-color);
  color: white;
  text-decoration: none;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.search-form a:hover {
  background: var(--secondary-dark);
  transform: translateY(-1px);
}

.search-results-info {
  text-align: center;
  margin-top: 1rem;
  color: var(--text-light);
  font-size: 1rem;
}

/* Posts Grid */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

/* Post Card */
.post-card {
  background-color: var(--bg-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 100%);
  opacity: 0;
  transition: var(--transition);
}

.post-card {
  position: relative;
}

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

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

.post-card h2 {
  margin-bottom: 1rem;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.4;
}

.post-card a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.post-card a:hover {
  color: var(--primary-dark);
}

.post-meta {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-light);
  flex-wrap: wrap;
}

.post-meta .author,
.post-meta .date {
  display: flex;
  align-items: center;
  font-weight: 500;
}

.post-meta .category {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
  color: white;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.excerpt {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  flex-grow: 1;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.read-more:hover {
  color: var(--primary-dark);
  transform: translateX(2px);
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem;
  color: var(--text-light);
}

/* Post View */
.post-view {
  max-width: 850px;
  margin: 0 auto;
}

.post {
  background-color: var(--bg-color);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3rem;
  border: 1px solid var(--border-color);
}

.post-header {
  margin-bottom: 2.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 2.5rem;
}

.post-header h1 {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
  color: var(--text-color);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.post-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-color);
}

/* Post Content Styling */
.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: 2.5rem;
  margin-bottom: 1.25rem;
  color: var(--primary-color);
  font-weight: 700;
}

.post-content h2 {
  font-size: 1.875rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.post-content h3 {
  font-size: 1.5rem;
}

.post-content h4 {
  font-size: 1.25rem;
  color: var(--text-color);
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content ul,
.post-content ol {
  margin-left: 2rem;
  margin-bottom: 1.25rem;
}

.post-content li {
  margin-bottom: 0.75rem;
  line-height: 1.7;
}

.post-content code,
.post-content .inline-code {
  background-color: var(--bg-lighter);
  color: var(--danger-color);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: "Monaco", "Courier New", monospace;
  font-size: 0.9em;
  font-weight: 500;
}

.post-content pre {
  background-color: #1e293b;
  color: #e2e8f0;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: 1.5rem;
  line-height: 1.5;
  border-left: 4px solid var(--primary-color);
}

.post-content pre code {
  background-color: transparent;
  color: inherit;
  padding: 0;
  font-size: 0.95rem;
  border-radius: 0;
}

.post-content blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 1.5rem;
  color: var(--text-light);
  font-style: italic;
  margin: 2rem 0;
  background-color: var(--bg-lighter);
  padding: 1.5rem;
  border-radius: var(--radius);
}

.post-content a {
  color: var(--primary-color);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  transition: var(--transition);
  font-weight: 500;
}

.post-content a:hover {
  color: var(--primary-dark);
  text-decoration-color: var(--primary-dark);
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

/* Post Tags */
.post-tags {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.tag {
  background: linear-gradient(135deg, var(--bg-lighter) 0%, var(--border-color) 100%);
  color: var(--primary-color);
  padding: 0.6rem 1.25rem;
  border-radius: 20px;
  font-size: 0.85rem;
  border: 1px solid var(--border-color);
  font-weight: 600;
  transition: var(--transition);
  text-transform: capitalize;
}

.tag:hover {
  background-color: var(--primary-light);
  color: white;
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

/* Post Footer */
.post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border-color);
}

/* Buttons */
.btn,
.btn-secondary,
.btn-small {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  letter-spacing: 0.5px;
}

.btn {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--primary-dark) 0%, #1536a6 100%);
}

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

.btn-full-width {
  width: 100%;
}

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

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-small {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  border-radius: var(--radius);
}

.btn-small.danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-small.danger:hover {
  background-color: #991b1b;
}

/* Forms */
.form-group {
  margin-bottom: 1.75rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.625rem;
  font-weight: 600;
  color: var(--text-color);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  background-color: var(--bg-color);
  color: var(--text-color);
}

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
  background-color: var(--bg-color);
}

.form-group input[type="checkbox"] {
  width: auto;
  margin-right: 0.75rem;
  cursor: pointer;
  accent-color: var(--primary-color);
}

.form-group label[for] {
  cursor: pointer;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

/* Editor Container */
.editor-container {
  max-width: 900px;
  margin: 0 auto;
  background-color: var(--bg-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.editor-container h1 {
  margin-bottom: 2.5rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 2rem;
  font-weight: 800;
}

.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

/* Admin Panel */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
}

.admin-header h1 {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 2rem;
  font-weight: 800;
  margin: 0;
}

.posts-table {
  background-color: var(--bg-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  overflow-x: auto;
  border: 1px solid var(--border-color);
}

.posts-table h2 {
  margin-bottom: 1.5rem;
  color: var(--text-color);
  font-size: 1.5rem;
  font-weight: 700;
}

.posts-table table {
  width: 100%;
  border-collapse: collapse;
}

.posts-table thead {
  background-color: var(--bg-lighter);
  border-bottom: 2px solid var(--border-color);
}

.posts-table th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  color: var(--text-color);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.posts-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.posts-table tbody tr {
  transition: var(--transition);
}

.posts-table tbody tr:hover {
  background-color: var(--bg-lighter);
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge.published {
  background-color: #dcfce7;
  color: #166534;
}

.badge.draft {
  background-color: #fef08a;
  color: #78350f;
}

/* Login */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 200px);
  padding: 2rem;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 900;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.login-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  max-width: 420px;
  width: 92%;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--bg-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-xl);
  z-index: 901;
  opacity: 0;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.login-modal.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.login-modal h1 {
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  font-size: 1.75rem;
  font-weight: 800;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  width: 2.5rem;
  height: 2.5rem;
  cursor: pointer;
  color: var(--text-lighter);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
}

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

.login-box {
  background-color: var(--bg-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  margin-bottom: 2rem;
  color: var(--primary-color);
  text-align: center;
}

.error-message {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  color: #991b1b;
  padding: 1rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--danger-color);
  font-weight: 500;
}

/* Footer */
.footer {
  background-color: var(--bg-color);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0;
  text-align: center;
  color: var(--text-light);
  margin-top: 4rem;
  font-size: 0.95rem;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    font-size: 15px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .post-card {
    padding: 1.5rem;
  }

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

  .post-header h1 {
    font-size: 2rem;
  }

  .hero {
    padding: 3rem 2rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .search-form > div {
    flex-wrap: wrap;
  }

  .search-form input[type="search"] {
    width: 100%;
    flex: none;
  }

  .search-form button[type="submit"],
  .search-form a {
    flex: 1;
    justify-content: center;
  }

  .nav-links {
    gap: 1.5rem;
  }

  .admin-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .admin-header .btn {
    width: 100%;
  }

  .navbar-content {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
  }

  table {
    font-size: 0.875rem;
  }

  .btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }

  .post {
    padding: 1.5rem;
  }

  .editor-container {
    padding: 1.5rem;
  }

  .login-modal {
    width: 95%;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }

  .container {
    padding: 0 1rem;
  }

  .post {
    padding: 1rem;
  }

  .post-header h1 {
    font-size: 1.5rem;
  }

  .editor-container {
    padding: 1rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero {
    padding: 2rem 1rem;
  }

  .navbar-content {
    padding: 0.75rem 1rem;
  }

  .post-card {
    padding: 1rem;
  }

  .btn,
  .btn-secondary {
    width: 100%;
  }

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

  .form-actions .btn,
  .form-actions .btn-secondary {
    width: 100%;
  }
}