/* ── AI Copywriting Studio · BrandSnap AI ──────────────────────────────────── */

/* ── Variables ───────────────────────────────────────────────────────────── */
:root {
  --cs-bg:         #f9fafb;
  --cs-surface:    #ffffff;
  --cs-border:     #e5e7eb;
  --cs-text:       #111827;
  --cs-text-muted: #6b7280;
  --cs-accent:     #6366f1;
  --cs-accent2:    #8b5cf6;
  --cs-success:    #22c55e;
  --cs-warning:    #f59e0b;
  --cs-error:      #ef4444;
  --cs-pro:        #f59e0b;
  --cs-radius:     12px;
  --cs-shadow:     0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --cs-shadow-lg:  0 4px 24px rgba(0,0,0,.1);
}

/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--cs-bg);
  color: var(--cs-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ────────────────────────────────────────────────────────────────── */
.cs-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--cs-border);
}
.cs-nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cs-logo {
  font-size: 1.2rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--cs-text);
  letter-spacing: -0.02em;
}
.cs-nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}
.cs-nav-links a {
  text-decoration: none;
  color: var(--cs-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color .15s;
}
.cs-nav-links a:hover,
.cs-nav-links a.cs-nav-active { color: var(--cs-text); }

/* ── Hero ───────────────────────────────────────────────────────────────── */
.cs-hero {
  background: var(--cs-surface);
  border-bottom: 1px solid var(--cs-border);
  padding: 56px 24px 48px;
}
.cs-hero-inner {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.cs-badge {
  display: inline-block;
  background: linear-gradient(135deg, #eef2ff, #f5f3ff);
  color: var(--cs-accent);
  border: 1px solid #c7d2fe;
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 20px;
}
.cs-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.cs-gradient-text {
  background: linear-gradient(135deg, var(--cs-accent) 0%, var(--cs-accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cs-hero-sub {
  font-size: 1.05rem;
  color: var(--cs-text-muted);
  max-width: 580px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.cs-kit-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: 10px 18px;
  font-size: 0.875rem;
  box-shadow: var(--cs-shadow);
}
.cs-kit-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.cs-kit-industry {
  background: #f3f4f6;
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.75rem;
  color: var(--cs-text-muted);
}
.cs-kit-voice {
  color: var(--cs-text-muted);
  font-size: 0.8rem;
  max-width: 220px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cs-connect-banner {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--cs-radius);
  padding: 12px 20px;
  font-size: 0.875rem;
  color: #92400e;
}
.cs-btn-sm {
  background: var(--cs-accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: opacity .15s;
}
.cs-btn-sm:hover { opacity: 0.85; }

/* ── Layout ──────────────────────────────────────────────────────────────── */
.cs-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - 180px);
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.cs-sidebar {
  border-right: 1px solid var(--cs-border);
  background: var(--cs-surface);
  position: sticky;
  top: 61px;
  height: calc(100vh - 61px);
  overflow-y: auto;
}
.cs-sidebar-inner {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.cs-section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cs-text-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cs-pro-link {
  font-weight: 700;
  color: var(--cs-pro);
  text-decoration: none;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}
.cs-format-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.cs-format-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--cs-bg);
  border: 1.5px solid var(--cs-border);
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  transition: all .15s;
  width: 100%;
  position: relative;
}
.cs-format-btn:hover {
  border-color: var(--cs-accent);
  background: #f0f0ff;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(99,102,241,.12);
}
.cs-format-btn.active {
  border-color: var(--cs-accent);
  background: #eef2ff;
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}
.cs-format-locked {
  opacity: 0.7;
}
.cs-format-locked:hover { opacity: 0.9; }
.cs-format-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}
.cs-format-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.cs-format-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cs-text);
}
.cs-format-desc {
  font-size: 0.75rem;
  color: var(--cs-text-muted);
  line-height: 1.4;
}
.cs-lock-icon {
  font-size: 0.8rem;
  flex-shrink: 0;
}
.cs-brand-context {
  background: linear-gradient(135deg, #f9fafb, #f0f0ff);
  border: 1px solid var(--cs-border);
  border-radius: 10px;
  padding: 14px;
}
.cs-context-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
}
.cs-chip {
  background: white;
  border: 1px solid var(--cs-border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--cs-text);
}
.cs-context-detail {
  font-size: 0.75rem;
  color: var(--cs-text-muted);
  margin-top: 4px;
}
.cs-color-strip {
  display: flex;
  gap: 4px;
  margin-top: 8px;
}
.cs-color-dot {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 1px solid rgba(0,0,0,.1);
}

/* ── Main panel ──────────────────────────────────────────────────────────── */
.cs-main {
  padding: 32px 40px;
  min-height: 100%;
}

/* ── Empty state ─────────────────────────────────────────────────────────── */
.cs-empty-state {
  text-align: center;
  padding: 80px 24px;
  max-width: 480px;
  margin: 0 auto;
}
.cs-empty-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
  display: block;
}
.cs-empty-state h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.cs-empty-state > p {
  color: var(--cs-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 28px;
}
.cs-empty-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  display: inline-block;
}
.cs-empty-feature {
  font-size: 0.875rem;
  color: var(--cs-text-muted);
}

/* ── Format panel ─────────────────────────────────────────────────────────── */
.cs-format-panel {
  max-width: 820px;
}
.cs-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}
.cs-format-selected {
  display: flex;
  align-items: center;
  gap: 14px;
}
.cs-panel-icon {
  font-size: 2rem;
}
.cs-format-selected h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2px;
}
.cs-format-selected p {
  font-size: 0.85rem;
  color: var(--cs-text-muted);
}
.cs-panel-actions {
  display: flex;
  gap: 10px;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.cs-btn-primary {
  background: linear-gradient(135deg, var(--cs-accent) 0%, var(--cs-accent2) 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s, transform .15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cs-btn-primary:hover:not(:disabled) { opacity: 0.9; transform: translateY(-1px); }
.cs-btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.cs-btn-secondary {
  background: var(--cs-surface);
  color: var(--cs-text);
  border: 1.5px solid var(--cs-border);
  border-radius: 10px;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cs-btn-secondary:hover { border-color: var(--cs-accent); color: var(--cs-accent); }

.cs-btn-sm {
  background: var(--cs-accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 7px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s;
}
.cs-btn-sm:hover { opacity: 0.85; }
.cs-btn-cancel {
  background: transparent;
  color: var(--cs-text-muted);
  border: 1px solid var(--cs-border);
}

/* ── Context form ────────────────────────────────────────────────────────── */
.cs-context-form {
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--cs-shadow);
}
.cs-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.cs-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.cs-form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--cs-text);
  letter-spacing: 0.01em;
}
.cs-optional {
  font-weight: 400;
  color: var(--cs-text-muted);
}
.cs-form-group input,
.cs-form-group select,
.cs-form-group textarea {
  border: 1.5px solid var(--cs-border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--cs-bg);
  color: var(--cs-text);
  transition: border-color .15s;
  width: 100%;
}
.cs-form-group input:focus,
.cs-form-group select:focus,
.cs-form-group textarea:focus {
  outline: none;
  border-color: var(--cs-accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,.1);
}
.cs-form-group select { cursor: pointer; }
.cs-form-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.cs-remaining-hint {
  font-size: 0.8rem;
  color: var(--cs-text-muted);
}

/* ── Loading state ───────────────────────────────────────────────────────── */
.cs-loading-state {
  text-align: center;
  padding: 80px 24px;
}
.cs-loading-inner { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.cs-loading-inner p { font-size: 1rem; font-weight: 600; color: var(--cs-text); }
.cs-loading-sub { font-size: 0.85rem; color: var(--cs-text-muted); font-weight: 400 !important; }

.cs-generation-animation {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  margin-bottom: 8px;
}
.cs-wave {
  display: flex;
  gap: 6px;
  align-items: flex-end;
}
.cs-wave span {
  width: 8px;
  border-radius: 4px;
  background: var(--cs-accent);
  animation: wave 0.8s ease-in-out infinite;
}
.cs-wave span:nth-child(1) { animation-delay: 0s;    height: 20px; }
.cs-wave span:nth-child(2) { animation-delay: 0.1s;  height: 36px; }
.cs-wave span:nth-child(3) { animation-delay: 0.2s;  height: 48px; }
.cs-wave span:nth-child(4) { animation-delay: 0.1s;  height: 36px; }
.cs-wave span:nth-child(5) { animation-delay: 0s;    height: 20px; }

@keyframes wave {
  0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
  50%       { transform: scaleY(1);   opacity: 1;   }
}

.cs-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Results ─────────────────────────────────────────────────────────────── */
.cs-results { }
.cs-results-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.85rem;
  color: var(--cs-text-muted);
}
.cs-results-format {
  background: #f3f4f6;
  border-radius: 6px;
  padding: 3px 10px;
}
.cs-copies-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}
.cs-results-footer {
  border-top: 1px solid var(--cs-border);
  padding-top: 20px;
  display: flex;
  justify-content: center;
}

/* ── Copy cards ───────────────────────────────────────────────────────────── */
.cs-copy-card {
  background: var(--cs-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  overflow: hidden;
  box-shadow: var(--cs-shadow);
  transition: box-shadow .2s;
}
.cs-copy-card:hover { box-shadow: var(--cs-shadow-lg); }
.cs-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--cs-border);
  background: linear-gradient(to right, #f9fafb, #fff);
}
.cs-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.cs-tone-badge {
  background: linear-gradient(135deg, #eef2ff, #f5f3ff);
  color: var(--cs-accent);
  border: 1px solid #c7d2fe;
  border-radius: 100px;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 600;
}
.cs-platform-badge {
  background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 100px;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 600;
}
.cs-word-count {
  font-size: 0.75rem;
  color: var(--cs-text-muted);
}
.cs-use-case {
  font-size: 0.75rem;
  color: var(--cs-text-muted);
  font-style: italic;
}
.cs-card-actions {
  display: flex;
  gap: 8px;
}
.cs-action-btn {
  background: transparent;
  border: 1px solid var(--cs-border);
  border-radius: 7px;
  padding: 5px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--cs-text-muted);
  transition: all .15s;
  display: flex;
  align-items: center;
  gap: 4px;
}
.cs-action-btn:hover { border-color: var(--cs-accent); color: var(--cs-accent); background: #f0f0ff; }

.cs-copy-text {
  padding: 18px 20px;
  font-size: 0.925rem;
  line-height: 1.75;
  color: var(--cs-text);
  white-space: pre-wrap;
  font-family: 'Merriweather', Georgia, serif;
}
.cs-copy-text br { margin-bottom: 8px; }

/* Email cards */
.cs-email-headers {
  padding: 12px 20px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.cs-email-row {
  font-size: 0.8rem;
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.cs-email-label {
  color: var(--cs-text-muted);
  font-weight: 600;
  min-width: 60px;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Ad cards */
.cs-ad-body {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cs-ad-headline {
  font-weight: 700;
  font-size: 1rem;
  color: var(--cs-text);
  font-family: 'Inter', sans-serif;
}
.cs-ad-text {
  font-size: 0.875rem;
  line-height: 1.65;
  color: #374151;
}
.cs-ad-cta {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--cs-accent);
}

/* FAQ cards */
.cs-faq-body { padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }
.cs-faq-q {
  font-weight: 700;
  font-size: 0.925rem;
  color: var(--cs-text);
  font-family: 'Inter', sans-serif;
}
.cs-faq-a {
  font-size: 0.875rem;
  line-height: 1.7;
  color: #4b5563;
  font-family: 'Merriweather', Georgia, serif;
}

/* Social bio cards */
.cs-social-bio-card .cs-copy-text {
  font-size: 1rem;
  line-height: 1.6;
}

/* ── Edit area ───────────────────────────────────────────────────────────── */
.cs-edit-area {
  padding: 0 20px 18px;
}
.cs-edit-textarea {
  width: 100%;
  min-height: 120px;
  border: 1.5px solid var(--cs-accent);
  border-radius: 8px;
  padding: 12px;
  font-family: 'Merriweather', Georgia, serif;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--cs-text);
  resize: vertical;
  background: #fafafa;
}
.cs-edit-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

/* ── Error state ─────────────────────────────────────────────────────────── */
.cs-error-state {
  text-align: center;
  padding: 64px 24px;
  background: var(--cs-surface);
  border: 1px solid #fee2e2;
  border-radius: var(--cs-radius);
}
.cs-error-icon { font-size: 2.5rem; margin-bottom: 12px; display: block; }
.cs-error-state p { color: #991b1b; font-size: 0.95rem; margin-bottom: 16px; }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .cs-layout { grid-template-columns: 1fr; }
  .cs-sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--cs-border);
  }
  .cs-sidebar-inner { flex-direction: row; flex-wrap: wrap; }
  .cs-format-group { flex-direction: row; overflow-x: auto; }
  .cs-format-btn { flex-shrink: 0; min-width: 200px; }
  .cs-main { padding: 24px 20px; }
  .cs-form-grid { grid-template-columns: 1fr; }
  .cs-hero { padding: 40px 20px 36px; }
  .cs-hero h1 { font-size: 2rem; }
}