/* ================================================
   AI AGENTS MONITOR — STYLESHEET
   Tema: Dark Editorial / Corporate Intelligence
   ================================================ */

:root {
  /* Palette */
  --bg-base:       #0d0f14;
  --bg-surface:    #131720;
  --bg-card:       #181d28;
  --bg-card-hover: #1e2435;
  --border:        #252c3d;
  --border-subtle: #1c2232;

  /* Testo */
  --text-primary:  #e8eaf0;
  --text-secondary:#8892aa;
  --text-muted:    #4d5870;
  --text-accent:   #c9a84c;

  /* Accenti */
  --amber:         #c9a84c;
  --amber-bright:  #f0c96a;
  --amber-dim:     #5a4820;
  --teal:          #3aafa9;
  --red-soft:      #c45c5c;

  /* Badge colori */
  --badge-official:    #1a3a5c;
  --badge-official-t:  #5ab0f0;
  --badge-media:       #1a2e1a;
  --badge-media-t:     #5ac47a;
  --badge-energy:      #3a2800;
  --badge-energy-t:    #f0c96a;
  --badge-regulation:  #2e1a3a;
  --badge-regulation-t:#c084f5;

  /* Categoria chip */
  --cat-interno:     #0e3a3a;
  --cat-interno-t:   #3aafa9;
  --cat-customer:    #1a2e1a;
  --cat-customer-t:  #5ac47a;
  --cat-enterprise:  #1a2040;
  --cat-enterprise-t:#6b8cf0;
  --cat-energy:      #3a2800;
  --cat-energy-t:    #f0c96a;
  --cat-regulation:  #2e1a3a;
  --cat-regulation-t:#c084f5;

  /* Tipografia */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'IBM Plex Sans', system-ui, sans-serif;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;

  /* Spacing */
  --radius:  6px;
  --radius-lg: 10px;
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ================================================
   HEADER
   ================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 32px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  font-size: 28px;
  color: var(--amber);
  line-height: 1;
  filter: drop-shadow(0 0 8px rgba(201,168,76,0.4));
  flex-shrink: 0;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 300;
  letter-spacing: 0.04em;
  margin-top: 2px;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.live-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

.header-date,
.news-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.news-count {
  color: var(--amber);
  font-weight: 500;
}

/* Ticker */
.header-ticker {
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 0;
  overflow: hidden;
  height: 30px;
  background: rgba(201,168,76,0.04);
}

.ticker-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--bg-base);
  background: var(--amber);
  padding: 0 14px;
  height: 100%;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.ticker-track {
  overflow: hidden;
  flex: 1;
  height: 100%;
  display: flex;
  align-items: center;
  mask-image: linear-gradient(to right, transparent 0%, black 4%, black 96%, transparent 100%);
}

.ticker-items {
  white-space: nowrap;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.05em;
  animation: ticker 28s linear infinite;
  padding-left: 24px;
}

@keyframes ticker {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ================================================
   LAYOUT PRINCIPALE
   ================================================ */
.main-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 32px 48px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: start;
}

/* ================================================
   SIDEBAR
   ================================================ */
.sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sidebar-section {
  padding: 20px 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-section:last-child {
  border-bottom: none;
}

.sidebar-heading {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* Filtri */
.filter-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.filter-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 10px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-secondary);
  text-align: left;
  transition: background 0.15s, color 0.15s;
  position: relative;
}

.filter-btn:hover {
  background: var(--border-subtle);
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(201,168,76,0.1);
  color: var(--amber-bright);
}

.filter-btn.active .filter-icon {
  color: var(--amber);
}

.filter-icon {
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  background: var(--border);
  color: var(--text-muted);
  padding: 1px 6px;
  border-radius: 100px;
  min-width: 22px;
  text-align: center;
}

.filter-btn.active .filter-count {
  background: var(--amber-dim);
  color: var(--amber-bright);
}

/* Legenda badge */
.source-legend {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.legend-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.legend-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
  padding-top: 1px;
}

/* Sidebar about */
.sidebar-about p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

.sidebar-about strong {
  color: var(--text-secondary);
  font-weight: 500;
}

/* ================================================
   BADGE
   ================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 3px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge--Official {
  background: var(--badge-official);
  color: var(--badge-official-t);
  border: 1px solid rgba(90,176,240,0.25);
}

.badge--Media {
  background: var(--badge-media);
  color: var(--badge-media-t);
  border: 1px solid rgba(90,196,122,0.2);
}

.badge--Energy {
  background: var(--badge-energy);
  color: var(--badge-energy-t);
  border: 1px solid rgba(240,201,106,0.25);
}

.badge--Regulation {
  background: var(--badge-regulation);
  color: var(--badge-regulation-t);
  border: 1px solid rgba(192,132,245,0.25);
}

/* ================================================
   AREA NEWS
   ================================================ */
.news-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.toolbar-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sort-label {
  font-size: 11px;
  color: var(--text-muted);
}

.sort-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.15s;
}

.sort-btn:hover,
.sort-btn.active {
  border-color: var(--amber-dim);
  color: var(--amber);
  background: rgba(201,168,76,0.06);
}

/* GRID NEWS */
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* ================================================
   CARD NEWS
   ================================================ */
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
  cursor: default;
  position: relative;
  overflow: hidden;
  animation: cardIn 0.35s ease both;
}

.news-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--card-accent, var(--amber-dim));
  border-radius: 0;
  transition: background 0.2s;
}

.news-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(201,168,76,0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}

.news-card:hover::before {
  background: var(--amber);
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Card header */
.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.card-meta-top {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.card-date {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.card-source {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 400;
}

.card-sep {
  color: var(--text-muted);
  font-size: 10px;
}

/* Card categoria chip */
.cat-chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 3px;
  white-space: nowrap;
}

.cat-chip--interno {
  background: var(--cat-interno);
  color: var(--cat-interno-t);
}

.cat-chip--customer {
  background: var(--cat-customer);
  color: var(--cat-customer-t);
}

.cat-chip--enterprise {
  background: var(--cat-enterprise);
  color: var(--cat-enterprise-t);
}

.cat-chip--energy {
  background: var(--cat-energy);
  color: var(--cat-energy-t);
}

.cat-chip--regulation {
  background: var(--cat-regulation);
  color: var(--cat-regulation-t);
}

/* Card titolo */
.card-title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

/* Card summary */
.card-summary {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: 300;
}

/* Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  background: var(--border-subtle);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: 0.04em;
  transition: color 0.15s, border-color 0.15s;
}

.news-card:hover .tag {
  color: var(--text-secondary);
  border-color: rgba(201,168,76,0.2);
}

/* Card footer */
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  gap: 12px;
}

.card-footer-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Bottone approfondisci */
.btn-approfondisci {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.18s;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-approfondisci:hover {
  background: var(--amber);
  color: var(--bg-base);
  border-color: var(--amber);
  box-shadow: 0 0 16px rgba(201,168,76,0.3);
}

.btn-approfondisci .arrow {
  transition: transform 0.18s;
  font-size: 12px;
}

.btn-approfondisci:hover .arrow {
  transform: translateX(3px);
}

/* ================================================
   EMPTY STATE
   ================================================ */
.empty-state {
  text-align: center;
  padding: 80px 32px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 40px;
  display: block;
  margin-bottom: 16px;
  opacity: 0.3;
}

.empty-state p {
  font-size: 14px;
  font-family: var(--font-mono);
}

/* ================================================
   FOOTER
   ================================================ */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
  margin-top: auto;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  flex-wrap: wrap;
}

.footer-inner span:first-child {
  color: var(--amber);
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 220px 1fr;
    padding: 24px 24px 40px;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 20px 14px;
  }

  .header-meta {
    gap: 12px;
  }

  .main-layout {
    grid-template-columns: 1fr;
    padding: 20px 16px 40px;
    gap: 20px;
  }

  .sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar-section {
    flex: 1 1 200px;
  }

  .brand-title {
    font-size: 20px;
  }

  .card-title {
    font-size: 17px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 6px;
    padding: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .header-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

  .sort-controls {
    display: none;
  }

  .news-card {
    padding: 18px;
  }
}