/* ==========================================================================
   ARCHITETTO AGENTE · SETUP STUDIO
   Design System: Bootstrap Minimal / Swiss Architectural Grid
   ========================================================================== */

:root {
  color-scheme: light;
  --bg: #FFFFFF;
  --fg: #111111;
  --fg-muted: #333333;
  --fg-subtle: #666666;
  --surface: #F8F8F8;
  --surface-subtle: #EEEEEE;
  --surface-hover: #E4E4E4;
  --border: #111111;
  --border-subtle: #CCCCCC;
  --accent: #CCFF00; /* Lime neon BDC */
  --accent-soft: rgba(204, 255, 0, 0.25);
  --danger: #D32F2F;
  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 8px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
  --container-max: 1200px;
}

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

html {
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
  color: var(--fg);
  padding-bottom: env(safe-area-inset-bottom, 24px);
}

/* Numeri e cifre tabulari ovunque */
.tabular, .metric-value, .stat-num, .step-badge, table td {
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}

/* Accessibilità e Focus */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--fg);
  outline-offset: 2px;
}

/* ==========================================================================
   Header & Top Bar
   ========================================================================== */

header.top-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: #FFFFFF;
  border-bottom: 2px solid var(--border);
  padding: 14px max(20px, calc((100vw - var(--container-max)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--fg);
}

.brand-badge {
  background-color: var(--fg);
  color: #FFFFFF;
  font-weight: 900;
  font-size: 17px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: -0.04em;
  line-height: 1;
}

.brand-title {
  font-size: 19px;
  font-weight: 850;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-sub {
  font-size: 15px;
  font-weight: 800;
  color: var(--fg);
  background: var(--accent);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 16px;
  font-weight: 850;
  color: var(--fg);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 52px;
  transition: transform 0.1s ease, background-color 0.15s ease;
}

.icon-btn:hover {
  background-color: var(--surface-hover);
}

.icon-btn:active {
  transform: scale(0.97);
}

/* ==========================================================================
   Main Layout & Stepper
   ========================================================================== */

main.app-shell {
  flex: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  padding: 24px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Banner Preset Rapidi */
.preset-bar {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.preset-title {
  font-size: 16px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

.preset-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-chip {
  background: #FFFFFF;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  color: var(--fg);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

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

.btn-chip:active {
  transform: scale(0.96);
}

/* Stepper Progress Header */
.stepper-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 16px;
}

.step-tab {
  background: var(--surface);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 12px 14px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
  min-height: 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.step-tab.active {
  border-color: var(--border);
  background: #FFFFFF;
  box-shadow: 3px 3px 0 var(--fg);
}

.step-tab.completed {
  border-color: var(--border);
  background: var(--accent-soft);
}

.step-num {
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
}

.step-tab.active .step-num {
  color: var(--fg);
}

.step-name {
  font-size: 17px;
  font-weight: 850;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   Step Sections & Forms
   ========================================================================== */

.step-content {
  display: none;
  animation: fadeIn 0.2s ease forwards;
}

.step-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.card-frame {
  background: #FFFFFF;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 4px 4px 0 var(--border);
}

.section-head {
  margin-bottom: 20px;
  border-bottom: 2px solid var(--surface-subtle);
  padding-bottom: 12px;
}

.section-title {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.section-desc {
  font-size: 16px;
  font-weight: 600;
  color: var(--fg-muted);
  margin-top: 4px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

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

label.form-label {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.label-hint {
  font-size: 15px;
  font-weight: 700;
  color: var(--fg-muted);
}

input.form-control, select.form-control, textarea.form-control {
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--fg);
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  width: 100%;
  transition: background-color 0.15s, border-color 0.15s;
}

input.form-control:focus, select.form-control:focus, textarea.form-control:focus {
  background: #FFFFFF;
  border-color: var(--fg);
}

textarea.form-control {
  min-height: 90px;
  resize: vertical;
  line-height: 1.4;
}

/* Tag / Chip Selectors */
.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.chip-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 15px;
  font-weight: 750;
  cursor: pointer;
  user-select: none;
  transition: all 0.12s ease;
}

.chip-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--fg);
  cursor: pointer;
}

.chip-item.checked {
  background: var(--accent);
}

/* ==========================================================================
   Live Metric HUD (Calcolatore Parametrico)
   ========================================================================== */

.metric-hud {
  background: var(--fg);
  color: #FFFFFF;
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.metric-box {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 15px;
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #FFFFFF;
}

.metric-value {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1.2;
}

.metric-sub {
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
}

/* ==========================================================================
   Agent Cards & Orchestration Grid
   ========================================================================== */

.agent-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.agent-card {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  background: var(--surface);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.agent-card:hover {
  background: #FFFFFF;
  box-shadow: 3px 3px 0 var(--fg);
}

.agent-card.selected {
  border-color: var(--border);
  background: #FFFFFF;
  box-shadow: 4px 4px 0 var(--border);
}

.agent-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.agent-role {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.agent-tag {
  font-size: 15px;
  font-weight: 900;
  text-transform: uppercase;
  background: var(--fg);
  color: #FFFFFF;
  padding: 4px 10px;
  border-radius: 4px;
}

.agent-desc {
  font-size: 16px;
  font-weight: 650;
  color: var(--fg);
  line-height: 1.4;
}

.agent-skills-list {
  font-size: 15px;
  font-weight: 800;
  color: var(--fg);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 4px;
}

/* ==========================================================================
   Step 4: Output Viewer & Code Preview
   ========================================================================== */

.output-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tabs-bar {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  border-bottom: 2px solid var(--border);
  padding-bottom: 8px;
}

.tab-btn {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
}

.tab-btn.active {
  background: var(--fg);
  color: #FFFFFF;
}

.code-viewer {
  background: #111111;
  color: #F0F0F0;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  max-height: 480px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.tree-list {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
}

/* Monumental Actions */
.action-hero-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 10px;
}

.btn-monumental {
  background: var(--fg);
  color: #FFFFFF;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 24px;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 64px;
  box-shadow: 4px 4px 0 #888888;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.btn-monumental.accent {
  background: var(--accent);
  color: var(--fg);
  box-shadow: 4px 4px 0 var(--border);
}

.btn-monumental:hover {
  filter: brightness(1.05);
}

.btn-monumental:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--border);
}

/* ==========================================================================
   Bottom Action Bar (Navigation Sticky)
   ========================================================================== */

.bottom-nav {
  position: sticky;
  bottom: 0;
  background: #FFFFFF;
  border-top: 2px solid var(--border);
  padding: 16px max(20px, calc((100vw - var(--container-max)) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  z-index: 40;
}

.nav-btn {
  background: #FFFFFF;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  font-size: 17px;
  font-weight: 850;
  cursor: pointer;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.nav-btn.primary {
  background: var(--fg);
  color: #FFFFFF;
  box-shadow: 3px 3px 0 #666666;
}

.nav-btn.primary:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 #666666;
}

/* ==========================================================================
   Drawer / Modale Commesse Salvate
   ========================================================================== */

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 100;
  display: none;
  align-items: flex-start;
  justify-content: flex-end;
}

.drawer-overlay.active {
  display: flex;
}

.drawer-panel {
  background: #FFFFFF;
  width: 100%;
  max-width: 500px;
  height: 100%;
  border-left: 2px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px;
  gap: 18px;
  overflow-y: auto;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--border);
  padding-bottom: 14px;
}

.drawer-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.saved-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.saved-item {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.saved-item-title {
  font-size: 17px;
  font-weight: 850;
}

.saved-item-meta {
  font-size: 15px;
  color: var(--fg);
  font-weight: 750;
}

.saved-item-actions {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

/* Toast Notifications */
.toast-notice {
  position: fixed;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--fg);
  color: var(--accent);
  border: 2px solid #FFFFFF;
  border-radius: var(--radius);
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 850;
  letter-spacing: -0.01em;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 150;
}

.toast-notice.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 860px) {
  .stepper-nav {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-grid-2, .form-grid-3 {
    grid-template-columns: 1fr;
  }
  .metric-hud {
    grid-template-columns: repeat(2, 1fr);
  }
  .agent-grid {
    grid-template-columns: 1fr;
  }
  .action-hero-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 17px;
  }
  .metric-hud {
    grid-template-columns: 1fr;
  }
  .stepper-nav {
    grid-template-columns: 1fr;
  }
  .brand-sub {
    display: none;
  }
}