/* app.css — Briefly app shell, input form, and brief result display */

/* ── App Shell ──────────────────────────────────────────────────────── */

.app-body {
  min-height: 100vh;
  background: var(--bg-primary);
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(12px);
}

.app-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--fg-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

.app-header-tag {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.app-main {
  padding: 48px 24px 80px;
}

.app-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ── Panels ─────────────────────────────────────────────────────────── */

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.panel-header {
  padding: 44px 48px 32px;
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

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

.panel-subtitle {
  color: var(--fg-secondary);
  font-size: 16px;
  line-height: 1.6;
  max-width: 560px;
}

/* ── Form ───────────────────────────────────────────────────────────── */

.brief-form {
  padding: 36px 48px 44px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.label-icon {
  color: var(--accent);
  font-size: 15px;
  font-weight: 400;
}

.label-hint {
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--fg-muted);
  margin-left: auto;
}

.form-input {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--fg-primary);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
}

.form-input::placeholder {
  color: var(--fg-muted);
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input.input-error {
  border-color: #ff4d6d;
  box-shadow: 0 0 0 3px rgba(255, 77, 109, 0.12);
}

.competitor-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ── Buttons ────────────────────────────────────────────────────────── */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 32px rgba(124, 106, 255, 0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-generate {
  align-self: flex-start;
  min-width: 200px;
}

.btn-arrow {
  font-size: 18px;
  transition: transform 0.2s ease;
}
.btn-primary:hover .btn-arrow { transform: translateX(4px); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-secondary);
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--fg-primary); }

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}
.btn-outline:hover { background: var(--accent); color: #fff; }

.btn-sm { padding: 8px 16px; font-size: 13px; }

.form-error {
  color: #ff4d6d;
  font-size: 14px;
  line-height: 1.5;
  padding: 12px 16px;
  background: rgba(255, 77, 109, 0.08);
  border: 1px solid rgba(255, 77, 109, 0.2);
  border-radius: 8px;
}

/* ── Status View ────────────────────────────────────────────────────── */

.status-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 72px 48px;
  gap: 20px;
}

.status-spinner {
  width: 56px;
  height: 56px;
  margin-bottom: 8px;
}

.spinner-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}

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

.status-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.status-desc {
  color: var(--fg-secondary);
  font-size: 15px;
  max-width: 400px;
  line-height: 1.6;
}

.status-steps {
  display: flex;
  gap: 32px;
  margin-top: 16px;
}

.step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-muted);
  transition: color 0.3s ease;
}

.step[data-state="active"] { color: var(--accent-bright); }
.step[data-state="done"] { color: #4ade80; }

.step-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fg-muted);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.step[data-state="active"] .step-dot {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 1.5s ease-in-out infinite;
}

.step[data-state="done"] .step-dot {
  background: #4ade80;
  box-shadow: 0 0 8px rgba(74, 222, 128, 0.5);
}

/* ── Brief View ─────────────────────────────────────────────────────── */

.brief-view {
  display: flex;
  flex-direction: column;
}

.brief-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  flex-wrap: wrap;
  gap: 12px;
}

.brief-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brief-tag {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid rgba(124, 106, 255, 0.25);
}

.brief-url {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 12px;
  color: var(--fg-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 300px;
}

.brief-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Markdown rendering ─────────────────────────────────────────────── */

.brief-content {
  padding: 48px 52px;
  overflow-y: auto;
  color: var(--fg-primary);
  font-size: 15px;
  line-height: 1.75;
}

.brief-content h1 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brief-content h2 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 40px 0 14px;
  color: var(--accent-bright);
}

.brief-content h2:first-of-type { margin-top: 0; }

.brief-content h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  margin: 24px 0 10px;
  color: var(--fg-primary);
}

.brief-content p {
  margin: 0 0 16px;
  color: var(--fg-secondary);
}

.brief-content ul, .brief-content ol {
  padding-left: 24px;
  margin: 0 0 16px;
  color: var(--fg-secondary);
}

.brief-content li { margin-bottom: 6px; }

.brief-content strong { color: var(--fg-primary); font-weight: 600; }
.brief-content em { color: var(--fg-secondary); font-style: italic; }

.brief-content code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--accent-bright);
}

.brief-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 20px 0 28px;
  font-size: 14px;
}

.brief-content th {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: var(--bg-secondary);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.brief-content td {
  padding: 12px 16px;
  color: var(--fg-secondary);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.brief-content tr:last-child td { border-bottom: none; }

.brief-content td:first-child { color: var(--fg-primary); font-weight: 500; }

.brief-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

.brief-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 12px 20px;
  margin: 0 0 16px;
  background: var(--bg-secondary);
  border-radius: 0 8px 8px 0;
  color: var(--fg-secondary);
}

/* ── Error View ─────────────────────────────────────────────────────── */

.error-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 72px 48px;
  gap: 16px;
}

.error-icon {
  font-size: 40px;
  color: #ff4d6d;
  line-height: 1;
}

.error-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
}

.error-message {
  color: var(--fg-secondary);
  font-size: 15px;
  max-width: 440px;
  line-height: 1.6;
}

/* ── History Panel ──────────────────────────────────────────────────── */

.history-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 32px;
}

.history-title {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 20px;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.history-empty {
  font-size: 14px;
  color: var(--fg-muted);
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease;
  gap: 12px;
}

.history-item:hover { background: var(--bg-secondary); }

.history-item-url {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  color: var(--fg-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.history-item-status {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 100px;
  flex-shrink: 0;
}

.status-completed { background: rgba(74, 222, 128, 0.1); color: #4ade80; border: 1px solid rgba(74, 222, 128, 0.2); }
.status-pending   { background: var(--accent-glow); color: var(--accent-bright); border: 1px solid rgba(124, 106, 255, 0.2); }
.status-processing{ background: rgba(251, 191, 36, 0.1); color: #fbbf24; border: 1px solid rgba(251, 191, 36, 0.2); }
.status-failed    { background: rgba(255, 77, 109, 0.1); color: #ff4d6d; border: 1px solid rgba(255, 77, 109, 0.2); }

.history-item-date {
  font-size: 12px;
  color: var(--fg-muted);
  flex-shrink: 0;
}

/* ── Responsive ─────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .app-header { padding: 16px 20px; }
  .app-main { padding: 24px 16px 60px; }
  .panel-header { padding: 28px 24px 20px; }
  .brief-form { padding: 24px 24px 32px; }
  .status-view { padding: 52px 24px; }
  .status-steps { flex-direction: column; gap: 14px; align-items: flex-start; }
  .brief-content { padding: 28px 24px; }
  .brief-toolbar { padding: 16px 20px; }
  .brief-actions { flex-wrap: wrap; }
  .btn-generate { width: 100%; justify-content: center; }
}