/* CSS Variables for Color Scheme: White 60%, Black 30%, Red 10% */
:root {
  --color-white: #ffffff;
  --color-black: #000000;
  --color-red: #dc2626;
  --color-red-light: #fef2f2;
  --color-red-dark: #991b1b;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --border-radius: 0.75rem;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --transition: all 0.2s ease-in-out;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-gray-50);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Loading Spinner */
.loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-white);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-gray-200);
  border-top: 4px solid var(--color-red);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Header */
.header {
  background: var(--color-white);
  box-shadow: var(--shadow-lg);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-red);
  border-radius: var(--border-radius);
  color: var(--color-white);
}

.logo-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-black);
}

.logo-text p {
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.nav-desktop {
  display: none;
  gap: 2rem;
}

.nav-link {
  color: var(--color-black);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--color-red);
}

.auth-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.auth-buttons {
  display: flex;
  gap: 0.5rem;
}

.user-menu {
  position: relative;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.user-info:hover {
  background: var(--color-gray-100);
}

.user-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
}

.user-name {
  font-weight: 500;
  color: var(--color-black);
}

.dropdown-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-gray-500);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: 1000;
  display: none;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  color: var(--color-black);
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
}

.dropdown-item:hover {
  background: var(--color-gray-100);
}

.mobile-menu-btn {
  display: flex;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-black);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.mobile-menu.show {
  display: block;
}

.mobile-menu-content {
  padding: 1rem;
}

.mobile-nav-link {
  display: block;
  padding: 0.75rem 0;
  color: var(--color-black);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid var(--color-gray-200);
}

.mobile-nav-link:last-child {
  border-bottom: none;
}

/* Buttons */
.btn-primary {
  background: var(--color-red);
  color: var(--color-white);
  border: none;
  padding: 0.75rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary:hover {
  background: var(--color-red-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-black);
  border: 2px solid var(--color-black);
  padding: 0.75rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-secondary:hover {
  background: var(--color-black);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--color-white);
  border-radius: var(--border-radius);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.admin-modal-content {
  max-width: 800px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.modal-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-black);
}

.close-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-gray-500);
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.close-btn:hover {
  background: var(--color-gray-100);
}

.modal-body {
  padding: 1.5rem;
}

.google-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1.5rem;
  background: var(--color-white);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 1rem;
}

.google-login-btn:hover {
  border-color: var(--color-gray-400);
  box-shadow: var(--shadow-md);
}

.google-icon {
  width: 1.5rem;
  height: 1.5rem;
}

.auth-disclaimer {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  text-align: center;
}


/* Additional CSS for Email/Password Authentication */
/* Add this to your styles.css file */

.auth-form {
  margin-bottom: 1.5rem;
}

.auth-form .form-group {
  margin-bottom: 1rem;
}

.auth-form label {
  display: block;
  font-weight: 500;
  color: var(--color-black);
  margin-bottom: 0.5rem;
}

.auth-form input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
}

.auth-form input:focus {
  outline: none;
  border-color: var(--color-red);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.auth-divider {
  position: relative;
  text-align: center;
  margin: 1.5rem 0;
}

.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-gray-300);
}

.auth-divider span {
  background: var(--color-white);
  color: var(--color-gray-500);
  padding: 0 1rem;
  font-size: 0.875rem;
}

.auth-toggle {
  text-align: center;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.auth-toggle p {
  color: var(--color-gray-600);
  font-size: 0.875rem;
}

.toggle-btn {
  background: none;
  border: none;
  color: var(--color-red);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  transition: var(--transition);
  font-size: 0.875rem;
}

.toggle-btn:hover {
  color: var(--color-red-dark);
}

/* Enhanced form validation styles */
.auth-form input:invalid {
  border-color: var(--color-red);
}

.auth-form input:valid {
  border-color: var(--color-gray-300);
}

/* Loading state for submit button */
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--color-gray-400);
}

/* Error message styling */
.error-message {
  color: var(--color-red);
  font-size: 0.875rem;
  margin-top: 0.25rem;
  display: none;
}

.error-message.show {
  display: block;
}
/* Admin Panel */
.admin-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.admin-tab {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  font-weight: 500;
  color: var(--color-gray-600);
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.admin-tab.active {
  color: var(--color-red);
  border-bottom-color: var(--color-red);
}

.admin-panel {
  display: none;
}

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

.tool-form {
  display: grid;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  color: var(--color-black);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.75rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-red);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.checkbox-group {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-black) 0%, var(--color-gray-900) 50%, var(--color-gray-800) 100%);
  color: var(--color-white);
  padding: 4rem 0;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  display: block;
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 400;
  color: var(--color-red);
  margin-top: 0.5rem;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--color-gray-300);
  margin-bottom: 2rem;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-gray-600);
  max-width: 32rem;
  margin: 0 auto 2rem;
}

/* Search */
.search-container {
  max-width: 36rem;
  margin: 0 auto 2rem;
}

.search-input-wrapper {
  position: relative;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-400);
  width: 1.25rem;
  height: 1.25rem;
}

.search-input {
  width: 100%;
  padding: 0.75rem 0.75rem 0.75rem 2.5rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-red);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* Category Filters */
.category-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.category-filter {
  padding: 0.5rem 1rem;
  background: var(--color-white);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-300);
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.category-filter:hover {
  background: var(--color-gray-100);
}

.category-filter.active {
  background: var(--color-red);
  color: var(--color-white);
  border-color: var(--color-red);
  box-shadow: var(--shadow-lg);
}

/* Sections */
.featured-section {
  padding: 4rem 0;
  background: var(--color-white);
}

.categories-section {
  padding: 4rem 0;
  background: var(--color-gray-100);
}

.tools-section {
  padding: 4rem 0;
  background: var(--color-gray-100);
}

.about-section {
  padding: 4rem 0;
  background: var(--color-white);
  text-align: center;
}

.about-section h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 3rem;
}

.about-description {
  font-size: 1.125rem;
  color: var(--color-gray-600);
  max-width: 48rem;
  margin: 2rem auto 0;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.feature {
  text-align: center;
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  margin: 0 auto 1rem;
}

.feature-icon.primary {
  background: var(--color-red-light);
  color: var(--color-red);
}

.feature-icon.dark {
  background: var(--color-black);
  color: var(--color-white);
}

.feature h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: 0.5rem;
}

.feature p {
  color: var(--color-gray-600);
}

/* Categories Grid */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.category-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.category-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--color-red);
  transform: translateY(-2px);
}

.category-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: var(--color-red-light);
  color: var(--color-red);
  border-radius: var(--border-radius);
  margin: 0 auto 1rem;
}

.category-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: 0.5rem;
}

.category-count {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

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

.tool-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.tool-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--color-red);
  transform: translateY(-2px);
}

.tool-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.tool-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: var(--color-red-light);
  color: var(--color-red);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.tool-card:hover .tool-icon {
  background: var(--color-red);
  color: var(--color-white);
}

.external-link {
  color: var(--color-gray-400);
  transition: var(--transition);
}

.tool-card:hover .external-link {
  color: var(--color-red);
}

.tool-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: 0.5rem;
}

.tool-card p {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tool-category {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-black);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
}

.featured-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--color-red-light);
  color: var(--color-red);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
}

/* No Results */
.no-results {
  text-align: center;
  padding: 3rem 0;
}

.no-results-icon {
  color: var(--color-gray-400);
  margin-bottom: 1rem;
}

.no-results-icon i {
  width: 4rem;
  height: 4rem;
}

.no-results h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: 0.5rem;
}

.no-results p {
  color: var(--color-gray-600);
}

/* Footer */
.footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.footer-brand .logo-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
}

.footer-brand .logo-text p {
  color: var(--color-gray-400);
}

.footer-description {
  color: var(--color-gray-400);
  margin-top: 1rem;
  max-width: 24rem;
}

.footer-links h4 {
  font-weight: 600;
  margin-bottom: 1rem;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-gray-400);
  text-decoration: none;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: 1.5rem;
  text-align: center;
  color: var(--color-gray-400);
}

/* Responsive Design */
@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }

  .mobile-menu-btn {
    display: none;
  }

  .hero-buttons {
    flex-direction: row;
    justify-content: center;
  }

  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }

  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

@media (max-width: 767px) {
  .footer-brand {
    grid-column: span 1;
  }

  .hero {
    padding: 3rem 0;
  }

  .section-header h2 {
    font-size: 1.875rem;
  }

  .about-section h2 {
    font-size: 1.875rem;
  }
}

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

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

/* Utility Classes */
.hidden {
  display: none !important;
}

.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;
}