/* ==========================================================================
   CoverAI Global Theme & Design System (Industrial Grade)
   ========================================================================== */

:root {
  /* Colors */
  --primary-color: #5c4fc7;
  --primary-hover: #4a3db5;
  --primary-light: #eeedfe;
  --primary-gradient: linear-gradient(135deg, #5c4fc7 0%, #7c3aed 100%);
  --secondary-color: #f59e0b;
  --secondary-hover: #d97706;
  --secondary-light: #fef3c7;
  --secondary-gradient: linear-gradient(135deg, #f59e0b, #d97706);
  
  /* Status Colors */
  --success-color: #22c55e;
  --success-hover: #16a34a;
  --success-light: #e8f5e9;
  --success-border: #a5d6a7;
  --success-text: #166534;
  
  --warning-color: #e65100;
  --warning-light: #fff8e1;
  --warning-border: #fde68a;
  --warning-text: #92400e;
  
  --danger-color: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: #fdf0ef;
  --danger-border: #f5c6c6;
  --danger-text: #c0392b;

  /* Neutrals */
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --input-bg: #fafafa;
  
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-title: 'Outfit', var(--font-sans);
  
  /* Layout & Spacing */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  --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 -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Core Resets & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
}

/* Navigation Bar */
nav {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: var(--shadow-sm);
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-title);
}

.logo span {
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.nav-btn {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

/* Cards */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 14px;
}

/* Forms & Inputs */
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  margin-top: 14px;
}

label:first-of-type {
  margin-top: 0;
}

input, select, textarea {
  width: 100%;
  font-size: 14px;
  color: var(--text-primary);
  background-color: var(--input-bg);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 9px 13px;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: #fff;
  box-shadow: 0 0 0 3px rgba(92, 79, 199, 0.15);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: #fff;
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-color);
  border-color: var(--text-muted);
}

.btn-success {
  background-color: var(--success-color);
  color: #fff;
}

.btn-success:hover:not(:disabled) {
  background-color: var(--success-hover);
}

.btn-danger {
  background-color: var(--danger-color);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--danger-hover);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Footer */
footer {
  text-align: center;
  padding: 2.5rem 1rem;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  background-color: var(--card-bg);
}

footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

/* Toast Notification Styles */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 9999;
  max-width: 420px;
  width: calc(100vw - 48px);
}

.toast {
  background-color: var(--card-bg);
  border-left: 4px solid var(--primary-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transform: translateX(120%);
  transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.35s ease;
  opacity: 0;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.toast-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  word-wrap: break-word;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

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

/* Toast Variants */
.toast-success {
  border-left-color: var(--success-color);
  background-color: #f0fdf4;
}
.toast-success .toast-icon { color: var(--success-color); }

.toast-error {
  border-left-color: var(--danger-color);
  background-color: #fdf2f2;
}
.toast-error .toast-icon { color: var(--danger-color); }

.toast-warning {
  border-left-color: var(--secondary-color);
  background-color: #fffbeb;
}
.toast-warning .toast-icon { color: var(--secondary-color); }

.toast-info {
  border-left-color: var(--primary-color);
  background-color: #f0f9ff;
}
.toast-info .toast-icon { color: var(--primary-color); }