/* ============================================================
   SEMESTRE FILTRO — Design accademico editoriale
   Palette:
     - crema #FAF7F2 (sfondo)
     - inchiostro #1A1A1A (testo)
     - blu profondo #2A4759 (primario / istituzionale)
     - ambra #C68B59 (accento)
     - rosso #B83A2B (warning)
     - verde #4A7A3E (successo)
   Typography:
     - Fraunces (serif moderno, display)
     - IBM Plex Sans (corpo)
============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --crema: #FAF7F2;
  --crema-scuro: #F0EBE0;
  --inchiostro: #1A1A1A;
  --inchiostro-soft: #4A4A4A;
  --primario: #2A4759;
  --primario-soft: #5B7689;
  --ambra: #C68B59;
  --ambra-scuro: #A26F40;
  --rosso: #B83A2B;
  --verde: #4A7A3E;
  --grigio-100: #EFEAE0;
  --grigio-200: #D9D2C2;
  --grigio-300: #BAB1A0;
  --grigio-500: #7A7163;
  --bordo: rgba(26, 26, 26, 0.12);
  --ombra-piccola: 0 1px 2px rgba(26,26,26,0.04), 0 2px 6px rgba(26,26,26,0.06);
  --ombra-media: 0 4px 12px rgba(26,26,26,0.08), 0 12px 32px rgba(26,26,26,0.06);
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

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

html, body {
  font-family: var(--sans);
  background: var(--crema);
  color: var(--inchiostro);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primario); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 { font-size: 2.5rem; font-weight: 600; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; font-weight: 600; }

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ====================== LAYOUT ====================== */

.contenitore {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.contenitore-stretto {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.intestazione {
  background: var(--crema);
  border-bottom: 1px solid var(--bordo);
  padding: 1rem 0;
}

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

.logo {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--primario);
}

.logo-piccolo {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--grigio-500);
  display: block;
  margin-bottom: 0.25rem;
}

/* ====================== LOGIN ====================== */

.login-wrap {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 800px) {
  .login-wrap { grid-template-columns: 1fr; }
  .login-side { display: none; }
}

.login-side {
  background: var(--primario);
  color: var(--crema);
  padding: 4rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(198,139,89,0.18) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255,255,255,0.05) 0%, transparent 60%);
}

.login-side h1 {
  font-size: 3rem;
  font-weight: 400;
  font-style: italic;
  margin-bottom: 1rem;
}

.login-side p { opacity: 0.85; max-width: 380px; }

.login-side-footer {
  font-family: var(--mono);
  font-size: 0.75rem;
  opacity: 0.6;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.login-form-side {
  padding: 4rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 500px;
  width: 100%;
}

.login-logo {
  width: 150px;
  height: auto;
  margin: 0 0 1.75rem;
  align-self: flex-start;
}

@media (max-width: 800px) {
  .login-logo {
    align-self: center;
    width: 130px;
  }
}

.login-form-side h2 {
  margin-bottom: 0.5rem;
  font-size: 2rem;
}

.login-form-side .subheading {
  color: var(--grigio-500);
  margin-bottom: 2.5rem;
}

.campo {
  margin-bottom: 1.25rem;
}

.campo label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  color: var(--inchiostro-soft);
  margin-bottom: 0.5rem;
}

.campo input,
.campo textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 2px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.campo input:focus,
.campo textarea:focus {
  outline: none;
  border-color: var(--primario);
  box-shadow: 0 0 0 3px rgba(42, 71, 89, 0.1);
}

.errori {
  color: var(--rosso);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

/* ====================== BOTTONI ====================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  background: var(--primario);
  color: white;
  border: none;
  border-radius: 2px;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}

.btn:hover { background: #1F3645; text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { background: var(--grigio-300); cursor: not-allowed; }

.btn-ambra { background: var(--ambra); }
.btn-ambra:hover { background: var(--ambra-scuro); }

.btn-rosso { background: var(--rosso); }
.btn-rosso:hover { background: #962E20; }

.btn-ghost {
  background: transparent;
  color: var(--inchiostro);
  border: 1px solid var(--bordo);
}
.btn-ghost:hover { background: var(--grigio-100); }

.btn-largo { width: 100%; }

/* ====================== DASHBOARD CANDIDATO ====================== */

.dashboard-wrap {
  padding: 3rem 0;
}

.dashboard-titolo {
  margin-bottom: 0.5rem;
}

.dashboard-sottotitolo {
  color: var(--grigio-500);
  margin-bottom: 3rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 800px) {
  .cards-grid { grid-template-columns: 1fr; }
}

.card-materia {
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
  padding: 2rem;
  position: relative;
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}

.card-materia.sbloccata:hover {
  transform: translateY(-2px);
  box-shadow: var(--ombra-media);
}

.card-materia.bloccata {
  opacity: 0.5;
  background: var(--grigio-100);
}

.card-materia.completata {
  background: var(--crema-scuro);
}

.card-numero {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--ambra);
  margin-bottom: 1rem;
}

.card-titolo {
  font-family: var(--serif);
  font-size: 2.25rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.card-desc {
  color: var(--grigio-500);
  font-size: 0.9rem;
  margin-bottom: auto;
  padding-bottom: 1.5rem;
}

.card-stato {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.7rem;
  display: inline-block;
  border-radius: 2px;
  align-self: flex-start;
  margin-bottom: 1rem;
}

.stato-non_iniziato { background: var(--grigio-100); color: var(--grigio-500); }
.stato-in_corso     { background: rgba(198,139,89,0.18); color: var(--ambra-scuro); }
.stato-completato   { background: rgba(74,122,62,0.18); color: var(--verde); }
.stato-scaduto      { background: rgba(184,58,43,0.15); color: var(--rosso); }
.stato-espulso      { background: var(--rosso); color: white; }

.lock-icon {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 24px;
  height: 24px;
  opacity: 0.5;
}

/* ====================== TEST ====================== */

.test-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--crema);
  border-bottom: 1px solid var(--bordo);
  padding: 1rem 0;
  backdrop-filter: blur(8px);
  background-color: rgba(250, 247, 242, 0.95);
}

.test-header-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}

.materia-corrente {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
}

.materia-corrente span {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--grigio-500);
  display: block;
  margin-bottom: 0.25rem;
}

.timer {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 2px;
  letter-spacing: 0.05em;
  min-width: 130px;
  text-align: center;
}

.timer.warning { color: var(--ambra-scuro); border-color: var(--ambra); }
.timer.critico { color: var(--rosso); border-color: var(--rosso); animation: pulse 1s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.azioni-test {
  justify-self: end;
  display: flex;
  gap: 0.5rem;
}

.test-body {
  padding: 2rem 0 6rem;
}

.test-intro {
  background: white;
  border-left: 3px solid var(--ambra);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
  font-size: 0.9rem;
  color: var(--inchiostro-soft);
}

.test-intro strong { color: var(--inchiostro); }

.domanda {
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
  padding: 2rem;
  margin-bottom: 1.25rem;
  scroll-margin-top: 100px;
}

.domanda-numero {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ambra);
  margin-bottom: 0.75rem;
}

.domanda-numero .tipo {
  color: var(--grigio-500);
  margin-left: 0.5rem;
}

.domanda-testo {
  font-family: var(--serif);
  font-size: 1.2rem;
  line-height: 1.45;
  margin-bottom: 1.5rem;
  color: var(--inchiostro);
}

.opzioni {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.opzione {
  display: flex;
  align-items: flex-start;
  padding: 0.875rem 1rem;
  border: 1px solid var(--bordo);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
  user-select: none;
}

.opzione:hover { background: var(--crema-scuro); }
.opzione input[type=radio] { margin-right: 0.75rem; margin-top: 0.3rem; accent-color: var(--primario); }
.opzione.selezionata { border-color: var(--primario); background: rgba(42,71,89,0.04); }

.opzione-lettera {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--ambra);
  margin-right: 0.5rem;
}

.completamento-input {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--sans);
  font-size: 1rem;
  background: var(--crema);
  border: 1px solid var(--bordo);
  border-bottom: 2px solid var(--primario);
  border-radius: 2px 2px 0 0;
}

.completamento-input:focus {
  outline: none;
  background: white;
  border-bottom-color: var(--ambra);
}

.salvato-indicator {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--verde);
  margin-top: 0.5rem;
  opacity: 0;
  transition: opacity 0.3s;
}
.salvato-indicator.visible { opacity: 1; }

/* Mini-navigatore laterale */
.navigatore-mini {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
  padding: 0.75rem;
  box-shadow: var(--ombra-media);
  max-height: 70vh;
  overflow-y: auto;
}

@media (max-width: 1100px) { .navigatore-mini { display: none; } }

.nav-mini-titolo {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--grigio-500);
  margin-bottom: 0.5rem;
  text-align: center;
}

.nav-mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.nav-mini-cell {
  width: 28px;
  height: 28px;
  font-family: var(--mono);
  font-size: 0.7rem;
  border: 1px solid var(--bordo);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.1s;
  text-decoration: none;
  color: var(--inchiostro);
  border-radius: 2px;
}

.nav-mini-cell:hover { border-color: var(--primario); text-decoration: none; }
.nav-mini-cell.risposta-data { background: var(--primario); color: white; border-color: var(--primario); }

/* Submit finale */
.azione-finale {
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
  padding: 2rem;
  margin-top: 2rem;
  text-align: center;
}

.azione-finale h3 { margin-bottom: 0.5rem; }
.azione-finale p { color: var(--grigio-500); margin-bottom: 1.5rem; }

/* ====================== WARNING MODALE ====================== */

.modale-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 26, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modale-overlay.visibile { display: flex; }

.modale {
  background: white;
  border-radius: 4px;
  max-width: 500px;
  width: 100%;
  padding: 2.5rem;
  box-shadow: var(--ombra-media);
  border-top: 4px solid var(--rosso);
}

.modale-titolo {
  font-family: var(--serif);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--rosso);
}

.modale-tentativi {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--grigio-500);
  margin-bottom: 1rem;
}

.modale-corpo { color: var(--inchiostro-soft); margin-bottom: 1.5rem; line-height: 1.6; }
.modale-corpo strong { color: var(--inchiostro); }

/* ====================== ESPULSO / COMPLETATO ====================== */

.stato-pagina {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.stato-card {
  max-width: 540px;
}

.stato-icona {
  font-family: var(--serif);
  font-style: italic;
  font-size: 6rem;
  color: var(--rosso);
  line-height: 1;
  margin-bottom: 1rem;
}

.stato-icona.successo { color: var(--verde); }

.stato-pagina h1 { font-size: 3rem; margin-bottom: 1rem; }
.stato-pagina p { color: var(--grigio-500); margin-bottom: 2rem; font-size: 1.05rem; }

/* ====================== ADMIN PANEL ====================== */

.admin-wrap { padding: 2rem 0 4rem; }

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.admin-header h1 { margin-bottom: 0.25rem; }
.admin-header p { color: var(--grigio-500); }

.admin-azioni {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.export-intervallo {
  display: flex;
  align-items: flex-end;
  gap: 0.65rem;
  flex-wrap: wrap;
  padding: 0.75rem;
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
}

.export-intervallo label {
  display: grid;
  gap: 0.25rem;
  font-family: var(--mono);
  color: var(--grigio-500);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.export-intervallo input,
.ricerca-admin input {
  border: 1px solid var(--bordo);
  background: var(--crema);
  color: var(--inchiostro);
  border-radius: 3px;
  padding: 0.72rem 0.8rem;
  font: inherit;
}

.ricerca-admin {
  margin-bottom: 2rem;
  padding: 1.25rem;
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
}

.ricerca-admin > label {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--grigio-500);
}

.ricerca-admin-riga {
  display: flex;
  gap: 0.65rem;
}

.ricerca-admin-riga input {
  flex: 1;
  min-width: 12rem;
}

.btn-piccolo {
  padding: 0.45rem 0.75rem;
  font-size: 0.72rem;
}

.link-indietro {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--primario);
  font-size: 0.85rem;
}

.risultato-materia-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.risultato-materia-header h2 { margin: 0.2rem 0 0; }

.punteggio-evidenza {
  color: var(--primario);
  font-family: var(--serif);
  font-size: 2.3rem;
  line-height: 1;
}

.punteggio-evidenza span {
  margin-left: 0.2rem;
  color: var(--grigio-500);
  font-size: 1rem;
}

.tabella-dettaglio {
  min-width: 980px;
}

.tabella-dettaglio th:first-child,
.tabella-dettaglio td:first-child,
.tabella-dettaglio th:last-child,
.tabella-dettaglio td:last-child {
  width: 4rem;
  text-align: center;
}

.tabella-dettaglio td {
  vertical-align: top;
  line-height: 1.45;
}

.punteggio-positivo { color: var(--verde); font-weight: 600; }
.punteggio-negativo { color: var(--rosso); font-weight: 600; }

.stato-vuoto {
  padding: 1.5rem;
  background: white;
  border: 1px solid var(--bordo);
  color: var(--grigio-500);
}

@media (max-width: 700px) {
  .ricerca-admin-riga { flex-wrap: wrap; }
  .ricerca-admin-riga input { flex-basis: 100%; }
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}

@media (max-width: 800px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }

.kpi-card {
  background: white;
  border: 1px solid var(--bordo);
  padding: 1.5rem;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--ambra);
}

.kpi-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--grigio-500);
  margin-bottom: 0.5rem;
}

.kpi-valore {
  font-family: var(--serif);
  font-size: 2.5rem;
  font-weight: 500;
  color: var(--primario);
  line-height: 1;
}

.kpi-suffisso { font-size: 1.2rem; color: var(--grigio-500); margin-left: 0.25rem; }

.sezione {
  margin-bottom: 3rem;
}

.sezione-titolo {
  font-family: var(--serif);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--bordo);
}

.sezione-titolo .num {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 500;
  color: var(--ambra);
  margin-right: 0.5rem;
}

.grafici-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 900px) { .grafici-grid { grid-template-columns: 1fr; } }

.grafici-grid.tre { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 1000px) { .grafici-grid.tre { grid-template-columns: 1fr; } }

.grafico-box {
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
  padding: 1.5rem;
}

.grafico-titolo {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--inchiostro);
}

.grafico-canvas {
  position: relative;
  height: 280px;
}

.grafico-canvas.alto { height: 360px; }

.tabella-wrap {
  background: white;
  border: 1px solid var(--bordo);
  border-radius: 4px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--bordo);
}

th {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--grigio-500);
  background: var(--crema);
  font-weight: 500;
}

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

td.numerico { font-family: var(--mono); }
td.tag-espulso { color: var(--rosso); font-weight: 600; }

/* ====================== UTILS ====================== */

.spazio-sopra { margin-top: 2rem; }
.testo-piccolo { font-size: 0.85rem; color: var(--grigio-500); }

/* Disabilitazione selezione testo durante il test */
.no-select {
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.no-select input,
.no-select textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}