/* ===== APP UI STYLES =====
   Extends theme.css with app-specific components.
   Design language: dark cinematic, gold accent, Syne + DM Sans.
*/

/* ===== HEADER ===== */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0 24px;
}

.app-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.app-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.app-logo:hover {
  color: var(--accent);
}

.app-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 0.9rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--fg);
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  padding: 9px 20px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  border-radius: 2px;
}

.btn-primary:hover {
  background: var(--accent-warm);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary.btn-lg {
  font-size: 0.85rem;
  padding: 12px 28px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 16px;
  cursor: pointer;
  border-radius: 2px;
  transition: border-color 0.15s, color 0.15s;
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--fg);
}

.btn-approve {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #0a0a0f;
  background: var(--accent);
  border: none;
  padding: 10px 24px;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.15s;
}

.btn-approve:hover {
  background: var(--accent-warm);
}

.btn-annotate {
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 9px 20px;
  cursor: pointer;
  border-radius: 2px;
  transition: border-color 0.15s, color 0.15s;
}

.btn-annotate:hover {
  border-color: rgba(201, 168, 76, 0.4);
  color: var(--accent);
}

/* ===== MAIN LAYOUT ===== */
.app-main {
  min-height: calc(100vh - 60px);
}

/* ===== PAGE HEADER ===== */
.page-header {
  padding: 48px 24px 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: var(--bg-elevated);
}

.page-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.page-badge {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 8px;
}

.page-subtitle {
  font-size: 0.95rem;
  color: var(--fg-muted);
}

/* ===== BRIEFS LIST ===== */
.briefs-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px;
}

.briefs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.brief-card {
  display: block;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
}

.brief-card:hover {
  border-color: rgba(201, 168, 76, 0.3);
  transform: translateY(-2px);
}

.brief-card-status {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.brief-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.brief-card-scene {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.brief-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.meta-tag {
  font-size: 0.75rem;
  color: var(--fg-dim);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 3px 8px;
  border-radius: 2px;
}

.brief-card-date {
  font-size: 0.75rem;
  color: var(--fg-dim);
  margin-left: auto;
}

/* Status colors */
.status-pending { color: var(--fg-muted); }
.status-generating { color: var(--accent); }
.status-ready { color: #6bbf7a; }
.status-approved { color: #6bbf7a; }
.status-failed { color: var(--red); }

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  max-width: 480px;
  margin: 0 auto;
}

.empty-icon {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 24px;
  opacity: 0.5;
}

.empty-state h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}

.empty-state p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ===== FORM PAGE ===== */
.form-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.form-header {
  margin-bottom: 40px;
}

.back-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--fg-muted);
  text-decoration: none;
  margin-bottom: 20px;
  transition: color 0.15s;
}

.back-link:hover { color: var(--fg); }

.brief-form {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.form-section {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-section-title {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(201, 168, 76, 0.2);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.required {
  color: var(--accent);
}

.field-input {
  background: var(--bg-elevated);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  border-radius: 3px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}

.field-input:focus {
  border-color: rgba(201, 168, 76, 0.5);
}

.field-input::placeholder {
  color: var(--fg-dim);
}

.field-textarea {
  resize: vertical;
  line-height: 1.6;
}

.field-hint {
  font-size: 0.78rem;
  color: var(--fg-dim);
  line-height: 1.5;
}

.form-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.btn-submit {
  font-size: 0.9rem;
  padding: 14px 32px;
}

.form-note {
  font-size: 0.8rem;
  color: var(--fg-dim);
}

/* ===== ALERT ===== */
.alert {
  padding: 14px 18px;
  border-radius: 3px;
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.alert-error {
  background: rgba(196, 77, 62, 0.1);
  border: 1px solid rgba(196, 77, 62, 0.3);
  color: #e07060;
}

/* ===== DETAIL PAGE ===== */
.detail-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.detail-header {
  margin-bottom: 40px;
}

.detail-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.brief-status-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: 2px;
}

.brief-status-badge.status-pending { color: var(--fg-muted); background: rgba(255,255,255,0.04); }
.brief-status-badge.status-generating { color: var(--accent); background: var(--accent-glow); }
.brief-status-badge.status-ready { color: #6bbf7a; background: rgba(107, 191, 122, 0.1); }
.brief-status-badge.status-approved { color: #6bbf7a; background: rgba(107, 191, 122, 0.1); }
.brief-status-badge.status-failed { color: var(--red); background: rgba(196,77,62,0.1); }

.detail-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 8px;
}

.detail-date {
  font-size: 0.85rem;
  color: var(--fg-dim);
}

/* ===== GENERATING STATE ===== */
.generating-state {
  text-align: center;
  padding: 64px 24px;
  background: var(--bg-elevated);
  border: 1px solid rgba(201, 168, 76, 0.1);
  border-radius: 4px;
  margin-bottom: 40px;
}

.generating-animation {
  margin-bottom: 32px;
}

.generating-state h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}

.generating-state p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  max-width: 480px;
  margin: 0 auto 8px;
}

.generating-hint {
  font-size: 0.8rem !important;
  color: var(--fg-dim) !important;
}

/* ===== BRIEF PANEL ===== */
.brief-panel {
  background: var(--bg-elevated);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  padding: 32px;
  margin-bottom: 48px;
}

.panel-title {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.brief-fields {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.brief-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brief-field-row {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.brief-field-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
}

.brief-field-value {
  font-size: 0.93rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== MOCKUPS SECTION ===== */
.mockups-section {
  margin-top: 48px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 0.92rem;
  color: var(--fg-muted);
  margin-bottom: 32px;
}

.mockups-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mockup-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  padding: 36px;
  transition: border-color 0.2s;
}

.mockup-card:hover {
  border-color: rgba(201, 168, 76, 0.2);
}

.mockup-approved {
  border-color: rgba(107, 191, 122, 0.3) !important;
  background: rgba(107, 191, 122, 0.03);
}

.mockup-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.mockup-variation {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.mockup-badge {
  font-family: var(--font-display);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 2px;
}

.badge-approved { color: #6bbf7a; background: rgba(107,191,122,0.12); }
.badge-revision { color: var(--accent); background: var(--accent-glow); }

.mockup-title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin-bottom: 12px;
}

.mockup-description {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.mockup-specs {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 3px;
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.spec-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-dim);
}

.spec-value {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
}

.mockup-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

.mockup-detail {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mockup-detail-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
}

.mockup-detail p {
  font-size: 0.87rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== ANNOTATIONS ===== */
.annotations-list {
  margin-bottom: 24px;
  padding: 20px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 3px;
}

.annotations-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg-dim);
  margin-bottom: 12px;
}

.annotation {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.annotation:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.annotation-revision {
  border-left: 2px solid var(--accent);
  padding-left: 12px;
}

.annotation-revision-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 4px;
}

.annotation p {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.6;
  margin-bottom: 4px;
}

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

/* ===== MOCKUP ACTIONS ===== */
.mockup-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.annotation-form {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 3px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.annotation-form-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--fg-muted);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .page-header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

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

  .field-row {
    grid-template-columns: 1fr;
  }

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

  .mockup-card {
    padding: 24px;
  }

  .brief-panel {
    padding: 24px;
  }

  .detail-header-row {
    flex-direction: column;
  }

  .mockup-actions {
    flex-wrap: wrap;
  }

  .brief-field-row {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .app-nav {
    gap: 12px;
  }

  .detail-page,
  .form-page {
    padding: 24px 16px 60px;
  }
}