/* BrandFlow AI — Smarter Content for Bolder Brands */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  /* Primary Brand Palette */
  --navy: #0B1020;
  --brand-blue: #2563EB;
  --electric-blue: #3B82F6;
  --cyan: #06B6D4;
  --brand-purple: #6D4AFF;
  --ai-violet: #7C3AED;

  /* UI Palette (70% neutral + navy, 20% blue/cyan, 10% purple/gradient) */
  --bg: #F8FAFC;
  --panel: #FFFFFF;
  --panel2: #F1F5F9;
  --line: #E2E8F0;
  --text: #111827;
  --muted: #64748B;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;

  /* Brand Signature Gradient */
  --gradient-ai: linear-gradient(135deg, #2563EB 0%, #06B6D4 50%, #6D4AFF 100%);
  --gradient-btn: linear-gradient(135deg, #2563EB, #1D4ED8);
  --gradient-btn-hover: linear-gradient(135deg, #1D4ED8, #1E40AF);
  
  --shadow: 0 4px 20px rgba(11, 16, 32, 0.05);
  --shadow-lg: 0 16px 40px rgba(37, 99, 235, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  background-image: 
    radial-gradient(1200px 600px at 80% -10%, rgba(37, 99, 235, 0.04) 0%, transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(6, 182, 212, 0.04) 0%, transparent 55%),
    radial-gradient(800px 400px at 50% 100%, #F8FAFC 0%, transparent 80%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.55;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a {
  color: var(--brand-blue);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--electric-blue);
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.studio-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, h4, h5 {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text);
}

.gradient-text {
  background: var(--gradient-ai);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--brand-blue);
  color: #ffffff !important;
  font-weight: 600;
  font-size: 14px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.22);
  transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.32);
  background: #1D4ED8;
}

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

.btn-secondary {
  background: #ffffff;
  color: var(--text) !important;
  border: 1px solid var(--line);
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

.btn-secondary:hover {
  background: var(--panel2);
  border-color: #CBD5E1;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.btn-accent {
  background: var(--gradient-ai);
  color: #ffffff !important;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.25);
}

.btn-accent:hover {
  opacity: 0.95;
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--muted) !important;
  border: 1px solid transparent;
  box-shadow: none;
}

.btn-ghost:hover {
  background: rgba(37, 99, 235, 0.06);
  color: var(--brand-blue) !important;
}

.btn-mini {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 26px;
  margin-bottom: 24px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  border-color: rgba(37, 99, 235, 0.25);
}

.sub-section {
  background: #F8FAFC;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 12px;
  color: var(--text);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  background: #ffffff;
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
  line-height: 1.5;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(37, 99, 235, 0.08);
  color: var(--brand-blue);
  border: 1px solid rgba(37, 99, 235, 0.15);
}

.badge-accent {
  background: rgba(6, 182, 212, 0.1);
  color: var(--cyan);
  border-color: rgba(6, 182, 212, 0.2);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.2);
}

.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 8px 16px;
  border-radius: 20px;
  background: var(--panel2);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.chip:hover {
  background: #E2E8F0;
  color: var(--text);
}

.chip.active {
  background: var(--brand-blue);
  color: #ffffff;
  border-color: var(--brand-blue);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--navy);
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 10px 30px rgba(11, 16, 32, 0.3);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideUp 0.25s cubic-bezier(0, 0, 0.2, 1);
}

.toast-success {
  border-left: 4px solid var(--success);
}

.toast-error {
  border-left: 4px solid var(--danger);
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 16, 32, 0.85);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 20px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 820px) {
  html, body {
    overflow-x: hidden;
  }
  .container {
    padding: 0 16px;
  }
  .studio-container {
    padding: 0 14px;
  }
  .form-grid, .form-grid-3 {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .card {
    padding: 18px 16px;
    border-radius: var(--radius-md);
  }
  .btn {
    min-height: 44px;
    font-size: 14px;
  }
  .btn-lg {
    padding: 14px 20px;
    font-size: 15px;
  }
  .form-input, .form-select, .form-textarea {
    font-size: 16px; /* Prevents iOS Safari auto-zoom on focus */
    padding: 12px 14px;
  }
  .toast {
    font-size: 13px;
    padding: 12px 16px;
  }
  .toast-container {
    right: 16px;
    left: 16px;
    bottom: 16px;
  }
}