/* ============================================================
   LIFE CLUB GESTIONALE — Design System Premium
   Palette: black & white elegance — nessun verde eccetto badge online
   Font: system-ui offline
   ============================================================ */

/* --- CSS Variables ----------------------------------------- */
:root {
  --nero:          #0A0A0A;
  --nero-soft:     #111111;
  --nero-card:     #1A1A1A;
  --grigio-scuro:  #2A2A2A;
  --grigio:        #6B6B6B;
  --grigio-medio:  #D0D0D0;
  --grigio-chiaro: #F0F0F0;
  --grigio-bg:     #F5F5F5;
  --bianco:        #FFFFFF;
  --accent:        #FFFFFF;
  --online:        #22C55E;

  --sidebar-w:     260px;

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

/* --- Reset -------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  color: var(--nero);
  background: var(--grigio-bg);
}

/* --- Layout root -------------------------------------------- */
#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
#sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--nero);
  color: var(--bianco);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  z-index: 200;
  transition: transform .25s ease;
}

/* --- Logo area --------------------------------------------- */
#sidebar-logo {
  padding: 32px 24px 24px;
  border-bottom: 1px solid #1F1F1F;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

#sidebar-logo .logo-img {
  height: 80px;
  width: auto;
  display: block;
  margin-bottom: 14px;
  filter: brightness(0) invert(1);
}

#sidebar-logo .logo-text {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--bianco);
  line-height: 1.2;
}

#sidebar-logo .logo-sub {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--grigio);
  margin-top: 4px;
}

/* --- Nav ---------------------------------------------------- */
#sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
  scrollbar-width: thin;
  scrollbar-color: #1F1F1F transparent;
}

#sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  color: #9A9A9A;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  transition: background .15s, color .15s;
  cursor: pointer;
}

#sidebar-nav a:hover {
  background: var(--nero-card);
  color: var(--bianco);
}

#sidebar-nav a:hover .nav-icon {
  opacity: 1;
}

#sidebar-nav a.active {
  background: var(--bianco);
  color: var(--nero);
  font-weight: 700;
}

#sidebar-nav a.active .nav-icon {
  opacity: 1;
}

#sidebar-nav a .nav-icon {
  font-size: 16px;
  line-height: 1;
  flex-shrink: 0;
  width: 20px;
  text-align: center;
  opacity: 0.6;
}

/* --- Staff footer ------------------------------------------ */
#sidebar-footer {
  padding: 20px 24px;
  border-top: 1px solid #1F1F1F;
  display: flex;
  align-items: center;
  gap: 10px;
}

#sidebar-footer .staff-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #1F1F1F;
  border: 1px solid #3A3A3A;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--bianco);
  flex-shrink: 0;
  position: relative;
}

/* Badge online */
#sidebar-footer .staff-avatar::after {
  content: '';
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--online);
  border: 1.5px solid var(--nero);
}

#sidebar-footer .staff-info {
  flex: 1;
  min-width: 0;
}

#sidebar-footer .staff-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--bianco);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#sidebar-footer .staff-role {
  font-size: 11px;
  color: var(--grigio);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#btn-logout {
  background: none;
  border: none;
  color: #5A5A5A;
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
  line-height: 1;
  flex-shrink: 0;
  transition: color .15s;
}
#btn-logout:hover { color: var(--bianco); }

/* ============================================================
   CONTENT AREA
   ============================================================ */
#content {
  flex: 1;
  overflow-y: auto;
  background: var(--grigio-bg);
  min-width: 0;
}

/* --- Section wrapper --------------------------------------- */
.section {
  display: none;
  min-height: 100%;
}
.section.active { display: block; }

/* --- Page header ------------------------------------------- */
.page-header {
  background: var(--bianco);
  padding: 32px 40px;
  border-bottom: 1px solid #E8E8E8;
  margin-bottom: 32px;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--nero);
  letter-spacing: -0.01em;
}

.page-header p {
  color: var(--grigio);
  font-size: 14px;
  margin-top: 4px;
}

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

/* --- Section inner padding ---------------------------------- */
.section-body {
  padding: 0 40px 40px;
}

/* Compatibilità: sezioni che non usano section-body */
.section.active > .stats-grid,
.section.active > .card,
.section.active > .placeholder-box,
.section.active > .table-wrap {
  margin-left: 40px;
  margin-right: 40px;
}

/* --- Card -------------------------------------------------- */
.card {
  background: var(--bianco);
  border: 1px solid #E8E8E8;
  border-radius: 0;
  padding: 24px;
}

.card + .card { margin-top: 16px; }

.card-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--nero);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

/* --- Placeholder ------------------------------------------- */
.placeholder-box {
  background: var(--bianco);
  border: 1px dashed var(--grigio-medio);
  padding: 80px 40px;
  text-align: center;
  color: var(--grigio);
  margin: 0 40px;
}

.placeholder-box .placeholder-icon {
  font-size: 36px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.placeholder-box h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--nero);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.placeholder-box p {
  font-size: 14px;
  color: var(--grigio);
}

/* --- Buttons ----------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  border-radius: 0;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: background .15s, color .15s, border-color .15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: var(--nero);
  color: var(--bianco);
  border: 1px solid var(--nero);
}
.btn-primary:hover:not(:disabled) {
  background: var(--grigio-scuro);
  border-color: var(--grigio-scuro);
}

.btn-secondary {
  background: var(--bianco);
  color: var(--nero);
  border: 1px solid var(--nero);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--grigio-chiaro);
}

.btn-ghost {
  background: transparent;
  color: var(--grigio);
  border: 1px solid var(--grigio-medio);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--grigio-chiaro);
  color: var(--nero);
  border-color: var(--nero);
}

/* --- Impostazioni tab nav ----------------------------------- */
.impost-tabs {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid #E8E8E8;
  gap: 0;
}
.impost-tab {
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 14px 22px;
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  color: var(--grigio);
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
  border-radius: 0;
  white-space: nowrap;
  flex-shrink: 0;
}
.impost-tab:hover {
  color: var(--nero);
  background: var(--grigio-chiaro);
}
.impost-tab.active {
  color: var(--nero);
  font-weight: 700;
  border-bottom-color: var(--nero);
}

/* --- Form -------------------------------------------------- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--grigio);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--grigio-medio);
  border-radius: 0;
  font-family: var(--font);
  font-size: 14px;
  color: var(--nero);
  background: var(--bianco);
  outline: none;
  transition: border-color .15s;
}

.form-input:focus {
  border-color: var(--nero);
}

.form-input::placeholder { color: #BBBBBB; }

/* --- Table ------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bianco);
}

thead th {
  background: var(--nero);
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--bianco);
  white-space: nowrap;
}

tbody td {
  padding: 13px 16px;
  border-bottom: 1px solid #F0F0F0;
  font-size: 13.5px;
  color: var(--nero);
}

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

tbody tr:nth-child(even) td { background: #F9F9F9; }

tbody tr:hover td { background: var(--grigio-chiaro); }

/* --- Badge ------------------------------------------------- */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 0;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.badge-dark   { background: var(--nero); color: var(--bianco); }
.badge-light  { background: var(--grigio-chiaro); color: var(--grigio); border: 1px solid var(--grigio-medio); }
.badge-outline{ background: transparent; border: 1px solid var(--grigio-medio); color: var(--grigio); }

/* --- Alert / Error ----------------------------------------- */
.alert {
  padding: 12px 16px;
  font-size: 13.5px;
  margin-bottom: 20px;
}

.alert-error {
  background: #FFF5F5;
  border-left: 3px solid #C0392B;
  color: #C0392B;
}

.alert-success {
  background: #F0FFF4;
  border-left: 3px solid #1A6B52;
  color: #1A6B52;
}

/* --- Stat card (dashboard) --------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  margin: 0 40px 32px;
  background: #E8E8E8;
  border: 1px solid #E8E8E8;
}

.stat-card {
  background: var(--bianco);
  padding: 28px 24px;
  border-left: 3px solid var(--nero);
}

.stat-card .stat-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--grigio);
  margin-bottom: 10px;
}

.stat-card .stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--nero);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-card .stat-sub {
  font-size: 12px;
  color: var(--grigio);
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Cards nella sezione dashboard */
#section-dashboard .card {
  margin: 0 40px;
}

#section-dashboard .card + .card {
  margin-top: 1px;
}

/* Abbonamenti, Contratti, Corsi, Schede, Agenda — placeholder */
#section-abbonamenti .placeholder-box,
#section-contratti .placeholder-box,
#section-corsi .placeholder-box,
#section-schede .placeholder-box,
#section-agenda .placeholder-box {
  margin: 0 40px;
}

/* Impostazioni — cards */
#section-impostazioni .card {
  margin: 0 40px;
}

#section-impostazioni .card + .card,
#section-impostazioni .mt-16 {
  margin-top: 16px;
}

/* Clienti — card e table */
#section-clienti .card {
  margin: 0 40px;
}

/* --- Divider ----------------------------------------------- */
.divider {
  border: none;
  border-top: 1px solid #E8E8E8;
  margin: 24px 0;
}

/* --- Utility ----------------------------------------------- */
.text-muted  { color: var(--grigio); }
.text-small  { font-size: 12px; }
.text-right  { text-align: right; }
.fw-bold     { font-weight: 700; }
.mt-8        { margin-top: 8px; }
.mt-16       { margin-top: 16px; }
.mt-24       { margin-top: 24px; }
.mb-8        { margin-bottom: 8px; }
.mb-16       { margin-bottom: 16px; }
.mb-24       { margin-bottom: 24px; }
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.gap-8       { gap: 8px; }
.gap-12      { gap: 12px; }
.gap-16      { gap: 16px; }

/* ============================================================
   LOGIN SCREEN
   ============================================================ */
#login-screen {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--nero);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  /* Texture pattern sottile */
  background-image: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 28px 28px;
}

#login-screen.visible { display: flex; }

#cambia-password-screen {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--nero);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  background-image: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 28px 28px;
}

#cambia-password-screen.visible { display: flex; }

/* Wrapper centrato: logo sopra + card */
.login-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 420px;
  padding: 0 20px;
}

/* Logo e titolo sopra la card */
.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header .login-logo-img {
  height: 100px;
  width: auto;
  display: block;
  margin: 0 auto 16px;
  filter: brightness(0) invert(1);
}

.login-header .login-brand {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--bianco);
  line-height: 1.1;
}

.login-header .login-subtitle {
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--grigio);
  margin-top: 6px;
}

/* Card bianca */
.login-box {
  background: var(--bianco);
  border-radius: 0;
  padding: 48px;
  width: 100%;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 8px 24px rgba(0,0,0,0.4);
}

/* Nasconde il vecchio login-logo se presente (compatibilità) */
.login-logo {
  display: none;
}

.login-box h2 {
  display: none; /* Il titolo è nel login-header ora */
}

/* Form specifico login: input underline-only */
.login-box .form-input {
  border: none;
  border-bottom: 2px solid var(--grigio-medio);
  background: transparent;
  padding: 10px 0;
  font-size: 16px;
  color: var(--nero);
  border-radius: 0;
}

.login-box .form-input:focus {
  border-bottom-color: var(--nero);
}

.login-box .form-input::placeholder {
  color: #CCCCCC;
}

/* Bottone accedi */
.login-box .btn-primary {
  background: var(--nero);
  color: var(--bianco);
  border: none;
  border-radius: 0;
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 12px;
  letter-spacing: 0.2em;
  font-weight: 700;
  margin-top: 8px;
}

.login-box .btn-primary:hover:not(:disabled) {
  background: var(--grigio-scuro);
}

/* ============================================================
   HAMBURGER / OVERLAY (mobile ≤ 768px)
   ============================================================ */
#hamburger {
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 300;
  background: var(--bianco);
  color: var(--nero);
  border: 1px solid #E8E8E8;
  border-radius: 0;
  width: 42px;
  height: 42px;
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

#sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 150;
}

@media (max-width: 768px) {
  #hamburger { display: flex; }

  #sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    transform: translateX(-100%);
  }

  #sidebar.open {
    transform: translateX(0);
  }

  #sidebar-overlay.open { display: block; }

  .section {
    padding-top: 64px;
  }

  .page-header {
    padding: 24px 20px;
    padding-top: 72px;
  }

  .stats-grid {
    margin: 0 16px 24px;
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-card {
    padding: 20px 16px;
  }

  #section-dashboard .card,
  #section-clienti .card,
  #section-impostazioni .card,
  #section-abbonamenti .placeholder-box,
  #section-contratti .placeholder-box,
  #section-corsi .placeholder-box,
  #section-schede .placeholder-box,
  #section-agenda .placeholder-box {
    margin: 0 16px;
  }

  .placeholder-box {
    margin: 0 16px;
    padding: 40px 20px;
  }

  .login-box {
    padding: 32px 24px;
  }
}