/* ── App CSS — Auth pages, Dashboard, Campaigns ── */
/* Extends theme.css design tokens (--bg, --surface, --fg, --fg-dim, --accent, --accent-dim, --border) */

/* ── Nav actions ── */
.nav-actions { display: flex; align-items: center; gap: 1rem; }
.nav-link {
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.15s;
}
.nav-link:hover { color: var(--accent); }

/* ── Auth Pages ── */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 80px);
  padding: 2rem;
  background: var(--surface);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
}

.auth-header { margin-bottom: 2rem; }

.auth-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  font-size: 0.9rem;
  color: var(--fg-dim);
}

.auth-error {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #DC2626;
  font-size: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
}

.auth-form { display: flex; flex-direction: column; gap: 1.25rem; }

.auth-footer-text {
  text-align: center;
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-top: 1.5rem;
}

.auth-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.auth-link:hover { text-decoration: underline; }

/* ── Form Elements ── */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }

.form-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.form-input, .form-textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-input::placeholder, .form-textarea::placeholder {
  color: var(--fg-dim);
  opacity: 0.5;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--fg-dim);
  opacity: 0.7;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #FFFFFF;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  letter-spacing: -0.01em;
}
.btn-primary:hover { background: #4338CA; transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--fg-dim);
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.7rem 1.25rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--fg); }

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #FFFFFF;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}
.btn-accent:hover { background: #4338CA; }

.btn-danger {
  display: inline-flex;
  align-items: center;
  background: #FEF2F2;
  color: #DC2626;
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 0.85rem;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  border: 1px solid #FECACA;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-danger:hover { background: #FEE2E2; }

/* ── App Layout (Sidebar + Main) ── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  width: 240px;
  min-width: 240px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem 0;
}

.sidebar-top { display: flex; flex-direction: column; }

.sidebar-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--fg);
  text-decoration: none;
  padding: 0 1.5rem;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.5rem;
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.15s, background 0.15s;
}
.sidebar-link:hover { color: var(--fg); background: var(--border-light); }
.sidebar-link.active {
  color: var(--accent);
  background: var(--accent-dim);
  font-weight: 500;
}

.sidebar-icon { font-size: 1rem; width: 1.25rem; text-align: center; }

.sidebar-bottom { padding: 0 1.5rem; }

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--border);
  margin-bottom: 0.5rem;
}

.sidebar-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
}

.sidebar-username {
  font-size: 0.85rem;
  color: var(--fg);
  font-weight: 500;
}

.sidebar-logout {
  font-size: 0.8rem;
  padding-left: 0;
  padding-right: 0;
}

/* ── Main Content ── */
.main-content {
  flex: 1;
  padding: 2rem 3rem;
  max-width: 960px;
}

.content-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  gap: 1rem;
}

.page-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--fg-dim);
}

.back-link {
  font-size: 0.8rem;
  color: var(--fg-dim);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 0.5rem;
  transition: color 0.15s;
}
.back-link:hover { color: var(--accent); }

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

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 5rem 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.empty-icon {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.6;
}

.empty-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.empty-desc {
  font-size: 0.9rem;
  color: var(--fg-dim);
  margin-bottom: 2rem;
  max-width: 380px;
  margin-left: auto;
  margin-right: auto;
}

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

.campaign-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.1s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.campaign-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.08);
}

.campaign-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.campaign-name {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.campaign-audience {
  font-size: 0.85rem;
  color: var(--fg-dim);
  line-height: 1.5;
}

.campaign-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: auto;
}

.campaign-date {
  font-size: 0.78rem;
  color: var(--fg-dim);
  opacity: 0.7;
}

/* ── Status Badges ── */
.status-badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  white-space: nowrap;
}

.status-draft { background: #F3F4F6; color: var(--fg-dim); }
.status-running { background: rgba(16, 185, 129, 0.1); color: #059669; }
.status-paused { background: rgba(245, 158, 11, 0.1); color: #D97706; }

.status-lg { font-size: 0.85rem; padding: 0.35rem 0.85rem; }

/* ── Detail Page ── */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}

.detail-label {
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  margin-bottom: 0.5rem;
}

.detail-value {
  font-size: 0.95rem;
  color: var(--fg);
  font-weight: 500;
}

.detail-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.detail-section-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.detail-section-body {
  font-size: 0.95rem;
  color: var(--fg);
  line-height: 1.65;
}

.detail-code {
  font-family: 'DM Sans', monospace;
  font-size: 0.9rem;
  color: var(--fg);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.danger-zone {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

/* ── AI Email Generation ── */
.generate-section {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.generate-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.generate-desc {
  font-size: 0.85rem;
  color: var(--fg-dim);
  line-height: 1.5;
}

.generate-error {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #DC2626;
  font-size: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1.25rem;
}

.email-variants {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.email-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  transition: border-color 0.15s;
}
.email-card:hover { border-color: var(--accent); }

.email-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.email-variant-badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: var(--accent-dim);
  color: var(--accent);
}

.email-date {
  font-size: 0.75rem;
  color: var(--fg-dim);
  opacity: 0.7;
}

.email-subject {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.65rem;
  letter-spacing: -0.01em;
}

.email-body-preview, .email-body-full {
  font-size: 0.9rem;
  color: var(--fg-dim);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.email-toggle {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  margin-top: 0.5rem;
  font-family: 'DM Sans', sans-serif;
}
.email-toggle:hover { text-decoration: underline; }

.email-empty {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 10px;
}

.email-empty-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.75rem;
  opacity: 0.5;
}

.email-empty p {
  font-size: 0.9rem;
  color: var(--fg-dim);
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ── Campaign Form ── */
.campaign-form {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .app-layout { flex-direction: column; }

  .sidebar {
    width: 100%;
    min-width: 100%;
    flex-direction: row;
    padding: 1rem;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .sidebar-top {
    flex-direction: row;
    align-items: center;
    gap: 1.5rem;
    flex: 1;
  }

  .sidebar-logo { margin-bottom: 0; padding: 0; }

  .sidebar-nav { flex-direction: row; }

  .sidebar-link { padding: 0.5rem 0.75rem; font-size: 0.85rem; }

  .sidebar-bottom {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0;
  }

  .sidebar-user { border-top: none; margin-bottom: 0; padding: 0; }

  .main-content { padding: 1.5rem; }

  .content-header { flex-direction: column; }

  .campaign-grid { grid-template-columns: 1fr; }

  .detail-grid { grid-template-columns: 1fr; }
}