/* ============================================
   UNIFIED THEME - MAK-AI MODEL HUB
   ============================================ */

/* COLOR PALETTE */
:root {
  /* Primary Colors */
  --primary: #222B45; /* Indigo 900 */
  --secondary: #00BFAE; /* Teal A400 */
  --accent: #FFB300; /* Amber 600 */
  --accent-alt: #7C4DFF; /* Deep Purple A200 */
  
  /* Neutral Colors */
  --background: #F5F7FA; /* Light Gray */
  --surface: #FFFFFF; /* White */
  --text-primary: #222B45; /* Very dark blue-gray */
  --text-secondary: #6B778C; /* Cool gray */
  --text-light: #9EAAB7; /* Light gray text */
  --border: #E0E7EF; /* Light border */
  
  /* Status Colors */
  --success: #4CAF50;
  --error: #F44336;
  --warning: #FF9800;
  --info: #2196F3;
  
  /* Component Colors */
  --tag-bg: #E0F7FA;
  --tag-text: #222B45;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Typography */
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

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

html, body {
  font-family: var(--font-family);
  background-color: var(--background);
  color: var(--text-primary);
}

body {
  line-height: 1.6;
  font-size: var(--font-size-base);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

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

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

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* ============================================
   BUTTONS - UNIFIED STYLING
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  font-family: var(--font-family);
  line-height: 1.5;
}

/* Button Sizes */
.btn-sm {
  padding: 6px 12px;
  font-size: var(--font-size-sm);
}

.btn-md {
  padding: 10px 24px;
  font-size: var(--font-size-base);
}

.btn-lg {
  padding: 12px 32px;
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
  display: flex;
}

/* Button Variants */
.btn-primary {
  background-color: var(--primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: #1a1f33;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

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

.btn-secondary:hover {
  background-color: #009b8a;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

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

.btn-accent:hover {
  background-color: #e0a300;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-danger:hover {
  background-color: #da190b;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

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

.btn-disabled,
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================
   FORMS - UNIFIED STYLING
   ============================================ */

form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

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

.form-group label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-base);
}

.form-group label.required::after {
  content: " *";
  color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  transition: all 0.3s ease;
  background-color: var(--surface);
  color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(0, 191, 174, 0.1);
}

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

.form-group small {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.form-group small.error {
  color: var(--error);
  font-weight: 500;
}

.form-group small.hint {
  color: var(--text-secondary);
  font-style: italic;
}

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

/* ============================================
   FIELDSET & LEGEND
   ============================================ */

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  background: var(--surface);
}

fieldset legend {
  padding: 0 var(--spacing-md);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================
   CARDS & CONTAINERS
   ============================================ */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  flex: 1;
}

.card-footer {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--spacing-md);
}

/* ============================================
   ALERTS & MESSAGES
   ============================================ */

.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-base);
  border-left: 4px solid;
}

.alert-success {
  background-color: #e8f5e9;
  color: #2e7d32;
  border-color: var(--success);
}

.alert-error,
.alert-danger {
  background-color: #ffebee;
  color: #c62828;
  border-color: var(--error);
}

.alert-warning {
  background-color: #fff3e0;
  color: #e65100;
  border-color: var(--warning);
}

.alert-info {
  background-color: #e3f2fd;
  color: #0d47a1;
  border-color: var(--info);
}

.messages {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   BADGES & TAGS
   ============================================ */

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  white-space: nowrap;
  background-color: var(--tag-bg);
  color: var(--tag-text);
}

.badge-primary {
  background-color: #e3f2fd;
  color: #1565c0;
}

.badge-secondary {
  background-color: #e0f2f1;
  color: #00695c;
}

.badge-accent {
  background-color: #fff3e0;
  color: #ef6c00;
}

.badge-success {
  background-color: #e8f5e9;
  color: #2e7d32;
}

.badge-error {
  background-color: #ffebee;
  color: #c62828;
}

/* ============================================
   NAVIGATION
   ============================================ */

nav a, .nav-link {
  color: var(--text-primary);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  font-size: var(--font-size-base);
  font-weight: 500;
}

nav a:hover, .nav-link:hover {
  background-color: var(--background);
  color: var(--secondary);
}

nav a.active, .nav-link.active {
  color: var(--secondary);
  font-weight: 600;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-light { color: var(--text-light); }

.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-light { background-color: var(--background); }

.border { border: 1px solid var(--border); }
.border-top { border-top: 1px solid var(--border); }
.border-bottom { border-bottom: 1px solid var(--border); }

.rounded { border-radius: var(--radius-lg); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Spacing Utilities */
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }

/* Display Utilities */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-gap { gap: var(--spacing-md); }

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

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

/* ============================================
   FOOTER STYLES
   ============================================ */

.footer {
  background: var(--primary);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

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

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: white;
  margin-bottom: var(--spacing-sm);
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links li a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-socials {
  display: flex;
  gap: var(--spacing-md);
}

.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  text-decoration: none;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.footer-socials a:hover {
  background: var(--secondary);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  max-width: 100%;
  overflow: hidden;
}

.footer-copy {
  flex: 1;
  text-align: left;
  min-width: 0;
}

.footer-legal {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-shrink: 0;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: var(--font-size-sm);
  white-space: nowrap;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer-legal a:hover {
  color: var(--secondary);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .btn {
    width: 100%;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
  
  .footer-sections {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-content {
    padding: 0 var(--spacing-md);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
    max-width: 100%;
  }

  .footer-copy {
    text-align: center;
    min-width: auto;
  }

  .footer-legal {
    justify-content: center;
    flex-wrap: wrap;
    max-width: 100%;
  }

  .footer-legal a {
    max-width: 100px;
    font-size: 0.75rem;
  }
}