/* ================================================================
   EDUTRACK V5 — COMPONENTS
================================================================ */
.card {
  background: var(--c-surface); border: 1px solid var(--c-border);
  border-radius: var(--radius-l); overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
}
.card:hover { border-color: var(--c-border-2); }
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 28px; border-bottom: 1px solid var(--c-border);
}
.card-header h3 { font-size: 1.05rem; font-weight: 800; letter-spacing: -.2px; }
.card-badge { font-size: .8rem; font-weight: 700; padding: 5px 12px; border-radius: 20px; background: var(--c-surface-2); color: var(--c-muted); }

/* Buttons */
.btn-cta {
  width: 100%; margin-top: 10px; background: var(--c-primary); color: #fff;
  font-size: 1.05rem; font-weight: 700; padding: 18px; border-radius: var(--radius-m);
  transition: transform var(--t), opacity var(--t), background var(--t);
}
.btn-cta:hover { transform: translateY(-2px); background: #1d4ed8; }
.btn-cta:active { transform: scale(.97); }
.btn-cta:disabled { opacity: .6; transform: none; cursor: not-allowed; }

.btn-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.btn-pill {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px;
  border-radius: var(--radius-m); border: 1.5px solid var(--c-border);
  color: var(--c-muted); font-size: .95rem; font-weight: 700; background: var(--c-surface);
  transition: all var(--t); -webkit-tap-highlight-color: transparent;
}
.btn-pill:hover { border-color: var(--c-border-2); color: var(--c-text); background: var(--c-surface-2); transform: translateY(-1px); }
.btn-pill.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* Form Fields */
.field-group { margin-bottom: 20px; }
.field-label { display: block; font-size: .88rem; font-weight: 700; color: var(--c-muted); margin-bottom: 8px; letter-spacing: .4px; text-transform: uppercase; }
.field-wrap { position: relative; display: flex; align-items: center; }
.field-ico { position: absolute; left: 18px; color: var(--c-muted); font-size: 1.1rem; pointer-events: none; }
.field-input {
  width: 100%; background: var(--c-surface-2); border: 1.5px solid var(--c-border);
  color: var(--c-text); font-family: inherit; font-size: 1.1rem; padding: 16px 18px 16px 48px;
  border-radius: var(--radius-m); outline: none; transition: all var(--t); font-weight: 500;
}
.field-input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 4px var(--c-primary-l); background: var(--c-surface-3); }
.field-eye { position: absolute; right: 16px; color: var(--c-muted); font-size: 1.2rem; cursor: pointer; padding: 8px; }
.field-eye:hover { color: var(--c-text); }

.select-wrap { position: relative; display: flex; align-items: center; }
.select-wrap i { position: absolute; left: 16px; color: var(--c-muted); font-size: .95rem; pointer-events: none; z-index: 1; }
.styled-select {
  appearance: none; background: var(--c-surface); border: 1.5px solid var(--c-border);
  color: var(--c-text); font-family: inherit; font-size: .95rem; font-weight: 600;
  padding: 12px 42px; border-radius: var(--radius-m); outline: none; cursor: pointer; transition: all var(--t);
}
.styled-select:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px var(--c-primary-l); }

/* KPI Cards */
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.kpi-card {
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius-xl);
  padding: 26px 24px; display: flex; align-items: center; gap: 20px; box-shadow: var(--shadow-card);
  position: relative; overflow: hidden; transition: transform var(--t), box-shadow var(--t);
}
.kpi-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--c-primary); }
.kpi-card.accent-warn::before { background: var(--c-warn); }
.kpi-card.accent-danger::before { background: var(--c-danger); }
.kpi-card.accent-ok::before { background: var(--c-ok); }
.kpi-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-float); }

.kpi-icon { width: 56px; height: 56px; border-radius: 16px; background: var(--c-primary-l); color: var(--c-primary); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; flex-shrink: 0; }
.kpi-card.accent-warn .kpi-icon { background: var(--c-warn-l); color: var(--c-warn); }
.kpi-card.accent-danger .kpi-icon { background: var(--c-danger-l); color: var(--c-danger); }

/* ================================================================
   AI ASSISTANT CHAT
================================================================ */
.ai-fab {
  position: fixed; bottom: calc(var(--safe-bottom) + 24px); right: 24px; width: 60px; height: 60px;
  background: var(--c-primary); border-radius: 50%; color: #fff;
  font-size: 1.5rem; display: none; align-items: center; justify-content: center;
  box-shadow: var(--shadow-card); cursor: pointer; border: none;
  transition: transform var(--t) var(--ease-spring), opacity 0.3s; z-index: 990;
  opacity: 0;
}
.ai-fab.visible { display: flex; opacity: 1; }
.ai-fab:hover { transform: scale(1.1); background: #1d4ed8; }
.ai-fab:active { transform: scale(0.95); }

.ai-chat-panel {
  position: fixed; bottom: calc(var(--safe-bottom) + 100px); right: 24px; width: 360px; height: 500px; max-height: calc(100dvh - 120px);
  background: var(--c-surface); border: 1px solid var(--c-border);
  box-shadow: var(--shadow-float); border-radius: var(--radius-m); display: flex; flex-direction: column;
  z-index: 991; transform: translateY(20px) scale(0.95); opacity: 0; pointer-events: none;
  transform-origin: bottom right; transition: transform 0.35s var(--ease-spring), opacity 0.25s;
}
.ai-chat-panel.active { transform: translateY(0) scale(1); opacity: 1; pointer-events: auto; }

.ai-header { padding: 16px 20px; background: var(--c-surface-2); border-bottom: 1px solid var(--c-border); display: flex; justify-content: space-between; align-items: center; border-radius: var(--radius-m) var(--radius-m) 0 0; }
.ai-header-actions { display: flex; gap: 8px; }
.ai-title { font-size: 1.05rem; font-weight: 800; color: var(--c-text); display: flex; align-items: center; gap: 8px; }
.ai-hd-btn { background: transparent; color: var(--c-muted); font-size: 1.1rem; padding: 6px; border-radius: 8px; transition: color var(--t), background var(--t); cursor: pointer; border: none; }
.ai-hd-btn:hover { color: var(--c-text); background: var(--c-surface-3); }

.ai-chat-panel.fullscreen { top: 0; left: 0; right: 0; bottom: 0; width: 100vw; height: 100dvh; max-height: 100dvh; border-radius: 0; z-index: 10000; transform: translateY(0) scale(1); border: none; }
.ai-chat-panel.fullscreen .ai-header { border-radius: 0; }

.ai-chat-body { flex: 1; padding: 16px; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; }
.ai-msg { display: flex; width: 100%; font-size: 0.95rem; line-height: 1.5; }
.ai-msg.ai-user { justify-content: flex-end; }
.ai-msg.ai-bot { justify-content: flex-start; }
.ai-msg-content { padding: 12px 16px; border-radius: 16px; max-width: 85%; word-wrap: break-word; }
.ai-msg.ai-user .ai-msg-content { background: var(--c-primary); color: #fff; border-bottom-right-radius: 4px; }
.ai-msg.ai-bot .ai-msg-content { background: var(--c-surface-2); color: var(--c-text); border: 1px solid var(--c-border); border-bottom-left-radius: 4px; }
.ai-msg.ai-bot .ai-msg-content strong { color: var(--c-text); font-weight: 800; }
.ai-msg.ai-bot .ai-msg-content p { margin-bottom: 8px; }
.ai-msg.ai-bot .ai-msg-content p:last-child { margin-bottom: 0; }
.ai-msg.ai-err .ai-msg-content { background: var(--c-danger-l); color: var(--c-danger); border-color: var(--c-danger); }

.ai-chat-input { padding: 16px; border-top: 1px solid var(--c-border); display: flex; gap: 10px; background: var(--c-surface); border-radius: 0 0 var(--radius-m) var(--radius-m); }
#ai-input { flex: 1; min-width: 0; background: var(--c-surface-2); border: 1px solid var(--c-border); padding: 12px 16px; font-size: 0.95rem; color: var(--c-text); border-radius: 20px; outline: none; transition: border-color var(--t); }
#ai-input:focus { border-color: var(--c-primary); }
#ai-send-btn { width: 44px; height: 44px; flex-shrink: 0; border-radius: 50%; background: var(--c-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; transition: transform var(--t); }
#ai-send-btn:disabled { opacity: .5; pointer-events: none; }

@media (max-width: 768px) {
  .ai-fab { bottom: calc(var(--bottom-h) + var(--safe-bottom) + 16px); right: 16px; }
  .ai-chat-panel { 
    right: 0; bottom: 0; width: 100%; height: 100dvh; max-height: 100dvh; border-radius: 0; transform: translateY(100%); 
    transition: transform 0.35s var(--ease-spring);
  }
  .ai-chat-panel.active { transform: translateY(0); border:none; z-index: 10000; }
  .ai-header { border-radius: 0; padding: 24px 20px 16px 20px; }
  .ai-chat-input { padding-bottom: calc(var(--safe-bottom) + 16px); }
}
.kpi-card.accent-ok .kpi-icon { background: var(--c-ok-l); color: var(--c-ok); }

.kpi-val { font-size: 2.3rem; font-weight: 800; line-height: 1; letter-spacing: -1.5px; }
.kpi-label { font-size: .9rem; color: var(--c-muted); font-weight: 600; margin-top: 6px; }
.kpi-sub { font-size: .8rem; font-weight: 700; color: var(--c-muted); margin-top: 10px; align-self: flex-end; margin-left: auto; text-transform: uppercase; letter-spacing: .5px; }
.kpi-sparkline { position: absolute; right: 0; bottom: 0; width: 100px; height: 50px; opacity: .5; }

/* Badges & Chips */
.badge { display: inline-flex; align-items: center; padding: 6px 12px; border-radius: 20px; font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .5px; }
.badge-ok { background: var(--c-ok-l); color: var(--c-ok); }
.badge-danger { background: var(--c-danger-l); color: var(--c-danger); }
.badge-warn { background: var(--c-warn-l); color: var(--c-warn); }
.badge-muted { background: var(--c-surface-3); color: var(--c-muted); }
.badge-primary { background: var(--c-primary-l); color: var(--c-primary); }

.chip { padding: 6px 14px; border-radius: 20px; font-size: .82rem; font-weight: 700; border: 1.5px solid var(--c-border); color: var(--c-muted); background: transparent; cursor: pointer; transition: all var(--t); }
.chip:hover { border-color: var(--c-border-2); color: var(--c-text); background: var(--c-surface-2); }
.chip.active { background: var(--c-primary-l); color: var(--c-primary); border-color: var(--c-primary); }

.ore-chip { display: inline-flex; align-items: center; gap: 5px; font-size: .85rem; font-weight: 800; padding: 5px 12px; border-radius: 20px; background: var(--c-surface-2); color: var(--c-text); box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.ore-chip.full { background: var(--c-danger-l); color: var(--c-danger); }
.ore-chip.part { background: var(--c-warn-l); color: var(--c-warn); }

/* Data Table */
.card-table { padding: 0; }
.data-table { width: 100%; border-collapse: collapse; text-align: left; }
.data-table th { padding: 18px 24px; font-size: .82rem; font-weight: 800; color: var(--c-muted); text-transform: uppercase; letter-spacing: .6px; border-bottom: 1px solid var(--c-border); white-space: nowrap; }
.data-table td { padding: 18px 24px; font-size: .95rem; font-weight: 600; border-bottom: 1px solid var(--c-border); }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background var(--t); }
.data-table tbody tr:hover td { background: var(--c-surface-2); }

/* Voto Chip */
.voto-chip { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 14px; font-weight: 800; font-size: 1.1rem; box-shadow: 0 4px 12px rgba(0,0,0,.15); }
.voto-chip.excel { background: rgba(14, 165, 233, 0.15); color: #0ea5e9; border: 1px solid rgba(14, 165, 233, 0.3); } /* Azzurro 9-10 */
.voto-chip.good { background: rgba(34, 197, 94, 0.15); color: #22c55e; border: 1px solid rgba(34, 197, 94, 0.3); } /* Verde Vivo 7-8 */
.voto-chip.ok { background: rgba(132, 204, 22, 0.15); color: #84cc16; border: 1px solid rgba(132, 204, 22, 0.3); } /* Verde Lime 6 */
.voto-chip.warn { background: rgba(245, 158, 11, 0.15); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.3); } /* Arancio 5 */
.voto-chip.danger { background: rgba(239, 68, 68, 0.15); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.3); } /* Rosso < 5 */
.voto-chip.muted { background: var(--c-surface-3); color: var(--c-muted); border: 1px solid var(--c-border); } /* Grigio N/D */

/* Responsive adjustments */
@media (max-width: 900px) {
  .kpi-row { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .card-header { padding: 18px 20px; }
}
@media (max-width: 600px) {
  .kpi-row { grid-template-columns: 1fr 1fr; gap: 10px; }
  .kpi-card { padding: 18px 16px; gap: 14px; border-radius: var(--radius-m); }
  .kpi-val { font-size: 1.8rem; }
  .kpi-icon { width: 44px; height: 44px; font-size: 1.25rem; border-radius: 12px; }
  .btn-pill { width: 100%; justify-content: center; } /* full width buttons on mobile */
  .data-table th, .data-table td { padding: 14px 16px; font-size: .9rem; }
}