/* ============================================================================
   RadarPersonal · Dark Premium Stylesheet
   Paleta: True Black + Electric Blue + Neon Violet
   Tipografías: Inter (UI), Montserrat ExtraBold (brand), Playfair Display (titulares)
   ============================================================================ */

:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #141414;
  --bg-card: rgba(20, 20, 20, 0.6);
  --border: #1f1f1f;
  --border-hover: #333;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #6b6b6b;
  --accent-blue: #3b82f6;
  --accent-violet: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --critical: #ef4444;
  --relevant: #f59e0b;
  --signal: #10b981;
  --ignore: #6b6b6b;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

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

html, body {
  height: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#app {
  min-height: 100vh;
}

.brand {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 24px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

/* ============================================================================
   LOGIN VIEW
   ============================================================================ */
.login-view {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-view .brand {
  font-size: 48px;
}

.tagline {
  color: var(--text-secondary);
  margin-bottom: 48px;
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  font-style: italic;
}

.login-form {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-form input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
}

.login-form input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.login-form button {
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.login-form button:hover:not(:disabled) {
  opacity: 0.9;
}

.login-form button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.msg {
  margin-top: 16px;
  color: var(--accent-blue);
  font-size: 13px;
}

/* ============================================================================
   MAIN APP
   ============================================================================ */
.main-app {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
}

.sidebar .brand {
  font-size: 22px;
  margin-bottom: 32px;
  padding: 0 8px;
}

.sidebar ul {
  list-style: none;
  flex: 1;
}

.sidebar li {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  margin-bottom: 4px;
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.15s;
}

.sidebar li:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.sidebar li.active {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 500;
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
}

.logout-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.content {
  padding: 32px 40px;
  max-width: 1200px;
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}

.content-header h2 {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  font-weight: 700;
}

.content-header button,
.content-header select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}

.content-header button:hover {
  border-color: var(--accent-blue);
}

.filters {
  display: flex;
  gap: 8px;
}

/* ============================================================================
   ITEM CARDS
   ============================================================================ */
.items-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.item-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  cursor: pointer;
  transition: border-color 0.15s;
  backdrop-filter: blur(8px);
}

.item-card:hover {
  border-color: var(--border-hover);
}

.item-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 12px;
}

.item-relevance {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.item-relevance.r-crítico { background: var(--critical); color: white; }
.item-relevance.r-relevante { background: var(--relevant); color: black; }
.item-relevance.r-señal { background: var(--signal); color: black; }
.item-relevance.r-ignorar { background: var(--ignore); color: white; }

.item-source {
  color: var(--text-muted);
}

.item-date {
  margin-left: auto;
  color: var(--text-muted);
}

.item-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.item-card p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.6;
}

.item-meta {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.projects {
  color: var(--accent-violet);
  font-weight: 500;
}

/* ============================================================================
   DIGESTS
   ============================================================================ */
.digests-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.digest-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  cursor: pointer;
}

.digest-card h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.digest-card p {
  color: var(--text-secondary);
  font-size: 13px;
  text-transform: capitalize;
}

.digest-card .cost {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
  font-family: 'Inter', monospace;
}

.digest-detail {
  margin-top: 24px;
}

.digest-detail article {
  background: var(--bg-secondary);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  line-height: 1.7;
}

.digest-detail article h1 {
  font-family: 'Playfair Display', serif;
  font-size: 32px;
  margin-bottom: 24px;
}

.digest-detail article h2 {
  font-family: 'Inter', sans-serif;
  font-size: 20px;
  margin-top: 32px;
  margin-bottom: 16px;
  color: var(--accent-blue);
}

.digest-detail article h3 {
  font-size: 16px;
  margin-top: 20px;
  margin-bottom: 8px;
}

/* ============================================================================
   SOURCES, APPLIED, PROJECTS, COST
   ============================================================================ */
.sources-list, .applied-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.source-card, .applied-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.source-type {
  display: inline-block;
  background: var(--accent-violet);
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.add-source-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  background: var(--bg-secondary);
  padding: 16px;
  border-radius: var(--radius-md);
  flex-wrap: wrap;
}

.add-source-form input,
.add-source-form select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
}

.project-card h3 {
  font-size: 15px;
  margin-bottom: 10px;
}

.project-card .focus {
  color: var(--accent-blue);
  font-size: 13px;
  margin-bottom: 12px;
}

.project-card .topics, .project-card .blocked {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
}

.project-card .blocked {
  color: var(--critical);
}

.cost-table {
  width: 100%;
  border-collapse: collapse;
}

.cost-table th, .cost-table td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.cost-table th {
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.05em;
}

.empty {
  color: var(--text-muted);
  text-align: center;
  padding: 48px;
}

/* Mobile */
@media (max-width: 768px) {
  .main-app {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: none; /* simplified for mobile; mejorar en Sprint 4+ */
  }
  .content {
    padding: 16px;
  }
}