/* AlfaCiclo 5.1.6 — menu lateral isolado, tema claro/escuro simplificado e fonte direta. */
:root {
  --rail-expanded: 286px;
  --rail-collapsed: 82px;
  --rail-bg: #f7f9fc;
  --rail-bg-soft: #ffffff;
  --rail-border: rgba(71, 91, 126, .14);
  --rail-line: rgba(71, 91, 126, .11);
  --rail-text: #213049;
  --rail-muted: #75839a;
  --rail-hover: rgba(24, 113, 187, .065);
  --rail-active-a: #0e77c8;
  --rail-active-b: #15528e;
  --rail-shadow: 18px 0 46px rgba(39, 58, 91, .10);
  --rail-control-bg: #ffffff;
  --rail-control-hover: #f1f6fb;
  --rail-control-border: rgba(77, 100, 139, .15);
  --rail-account-bg: #ffffff;
  --rail-radius: 18px;
}

html[data-theme="dark"] {
  --rail-bg: #0c1730;
  --rail-bg-soft: rgba(255,255,255,.035);
  --rail-border: rgba(146, 173, 219, .16);
  --rail-line: rgba(143, 168, 207, .14);
  --rail-text: #dce8fb;
  --rail-muted: #91a6c6;
  --rail-hover: rgba(255,255,255,.055);
  --rail-active-a: #0f77ca;
  --rail-active-b: #174a82;
  --rail-shadow: 22px 0 46px rgba(2,7,20,.22);
  --rail-control-bg: rgba(255,255,255,.045);
  --rail-control-hover: rgba(255,255,255,.075);
  --rail-control-border: rgba(149,174,214,.14);
  --rail-account-bg: rgba(255,255,255,.04);
}

html, body, #app { max-width: 100%; overflow-x: hidden; }
.rail-shell { min-height: 100vh; }
.rail-workspace {
  min-height: 100vh;
  margin-left: var(--rail-expanded);
  transition: margin-left .24s cubic-bezier(.2,.75,.25,1);
}
.rail-page-content { min-width: 0; }

.app-rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 55;
  width: var(--rail-expanded);
  height: 100dvh;
  box-sizing: border-box;
  display: grid;
  grid-template-rows: auto minmax(0,1fr) auto;
  padding: 14px 12px 12px;
  overflow: visible;
  color: var(--rail-text);
  background: var(--rail-bg);
  border-right: 1px solid var(--rail-border);
  box-shadow: var(--rail-shadow);
  transition: width .24s cubic-bezier(.2,.75,.25,1), transform .24s cubic-bezier(.2,.75,.25,1), background .18s ease;
}
html[data-theme="dark"] .app-rail {
  background:
    radial-gradient(circle at 20% 0%, rgba(25,111,169,.15), transparent 30%),
    linear-gradient(180deg, #0c1730, #0a142a);
}

/* Header */
.rail-header { position: relative; min-width: 0; padding-bottom: 12px; }
.rail-brand {
  min-width: 0;
  min-height: 70px;
  display: grid;
  grid-template-columns: 48px minmax(0,1fr);
  align-items: center;
  gap: 12px;
  padding: 9px 13px;
  border: 1px solid var(--rail-border);
  border-radius: 21px;
  background: var(--rail-bg-soft);
  color: inherit;
  text-decoration: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 9px 24px rgba(46,67,102,.045);
}
html[data-theme="dark"] .rail-brand { box-shadow: inset 0 1px 0 rgba(255,255,255,.05); }
.rail-brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: linear-gradient(135deg, rgba(18,105,150,.20), rgba(17,117,184,.08));
  border: 1px solid rgba(29,151,177,.17);
}
html[data-theme="dark"] .rail-brand-mark { background: linear-gradient(135deg, rgba(18,105,150,.5), rgba(10,34,65,.82)); }
.rail-brand-mark img { width: 38px; height: 38px; object-fit: contain; }
.rail-brand-text { min-width: 0; }
.rail-brand-text strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--rail-text);
  font-size: 1rem;
  font-weight: 850;
  letter-spacing: -.025em;
}
.rail-brand-text small {
  display: block;
  margin-top: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--rail-muted);
  font-size: .69rem;
  font-weight: 600;
}
.rail-collapse,
.rail-close {
  position: absolute;
  top: 16px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  padding: 0;
  border-radius: 999px;
  border: 4px solid #f7faf9;
  background: #11616a;
  color: white;
  box-shadow: 0 10px 20px rgba(0,0,0,.18);
  cursor: pointer;
}
html[data-theme="dark"] .rail-collapse,
html[data-theme="dark"] .rail-close { border-color: #eef4f2; }
.rail-collapse { right: -31px; }
.rail-close { right: 12px; display: none; }
.rail-collapse:hover,
.rail-close:hover { background: #147681; }

/* Navigation: the only scrollable area */
.rail-scroll {
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px 4px 10px;
  scrollbar-width: thin;
  scrollbar-color: rgba(119,143,180,.30) transparent;
}
.rail-scroll::-webkit-scrollbar { width: 6px; }
.rail-scroll::-webkit-scrollbar-thumb { border-radius: 999px; background: rgba(119,143,180,.30); }
.rail-section { margin: 0 0 12px; }
.rail-section-title {
  padding: 8px 10px 7px;
  color: var(--rail-muted);
  font-size: .67rem;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.rail-nav-list { display: grid; gap: 4px; }
.rail-nav-link {
  --rail-tone: #3e8ee8;
  position: relative;
  min-width: 0;
  min-height: 48px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 38px minmax(0,1fr);
  align-items: center;
  gap: 10px;
  padding: 6px 11px 6px 9px;
  border-radius: var(--rail-radius);
  color: var(--rail-text);
  text-decoration: none;
  transition: background .14s ease, color .14s ease, transform .14s ease, box-shadow .14s ease;
}
.rail-nav-link[data-section="application"] { --rail-tone: #e85476; }
.rail-nav-link[data-section="school"] { --rail-tone: #17ad78; }
.rail-nav-link[data-section="admin"] { --rail-tone: #8d68e8; }
.rail-nav-link[data-section="support"] { --rail-tone: #d8992d; }
.rail-nav-link:hover { background: var(--rail-hover); }
.rail-nav-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: var(--rail-tone);
  background: color-mix(in srgb, var(--rail-tone) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--rail-tone) 17%, transparent);
}
.rail-nav-icon svg { width: 19px; height: 19px; }
.rail-nav-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: normal;
  line-height: 1.12;
  color: inherit;
  font-size: .83rem;
  font-weight: 760;
}
.rail-nav-link.active {
  background: linear-gradient(135deg, var(--rail-active-a), var(--rail-active-b));
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 13px 25px rgba(1,27,62,.20);
}
.rail-nav-link.active .rail-nav-icon {
  color: #fff;
  background: rgba(255,255,255,.09);
  border-color: rgba(255,255,255,.14);
}
.rail-nav-link.active::after {
  content: "";
  position: absolute;
  right: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255,255,255,.10);
}

/* Footer: theme + direct text size controls; no shortcut */
.rail-footer {
  min-width: 0;
  padding: 10px 4px 0;
  border-top: 1px solid var(--rail-line);
  background: var(--rail-bg);
}
html[data-theme="dark"] .rail-footer {
  background: linear-gradient(180deg, rgba(10,20,42,0), rgba(10,20,42,.95) 16%);
}
.rail-preferences {
  display: grid;
  grid-template-columns: 46px minmax(0,1fr);
  gap: 8px;
  margin-bottom: 10px;
}
.app-rail .theme-menu-rail { min-width: 0; }
.app-rail .theme-menu-rail .theme-trigger {
  width: 46px;
  height: 44px;
  min-width: 46px;
  min-height: 44px;
  padding: 0 !important;
  display: grid;
  place-items: center;
  border: 1px solid var(--rail-control-border) !important;
  border-radius: 14px !important;
  background: var(--rail-control-bg) !important;
  color: var(--rail-text) !important;
  box-shadow: none !important;
}
.app-rail .theme-menu-rail .theme-trigger:hover { background: var(--rail-control-hover) !important; }
.app-rail .theme-menu-rail .theme-trigger-icon { width: 22px; height: 22px; display: grid; place-items: center; }
.app-rail .theme-menu-rail .theme-trigger-icon svg { width: 20px; height: 20px; }
.rail-font-stepper {
  min-width: 0;
  height: 44px;
  display: grid;
  grid-template-columns: 46px minmax(52px,1fr) 46px;
  overflow: hidden;
  border: 1px solid var(--rail-control-border);
  border-radius: 14px;
  background: var(--rail-control-bg);
}
.rail-font-button,
.rail-font-reset {
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--rail-text);
  cursor: pointer;
  font: inherit;
}
.rail-font-button { font-size: .82rem; font-weight: 850; }
.rail-font-reset {
  border-inline: 1px solid var(--rail-control-border);
  color: var(--rail-muted);
  font-size: .68rem;
  font-weight: 800;
}
.rail-font-button:hover:not(:disabled),
.rail-font-reset:hover { background: var(--rail-control-hover); color: var(--rail-text); }
.rail-font-button:disabled { opacity: .32; cursor: not-allowed; }

.rail-account-menu { position: relative; }
.rail-account {
  width: 100%;
  min-width: 0;
  min-height: 64px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 42px minmax(0,1fr) 20px;
  align-items: center;
  gap: 10px;
  padding: 9px 11px !important;
  border: 1px solid var(--rail-control-border) !important;
  border-radius: 18px !important;
  background: var(--rail-account-bg) !important;
  color: var(--rail-text) !important;
  box-shadow: none !important;
}
.rail-account:hover { background: var(--rail-control-hover) !important; }
.rail-account-avatar {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg,#168ce4,#17487f);
  color: white;
  font-size: .79rem;
  font-weight: 900;
}
.rail-account-copy { min-width: 0; text-align: left; }
.rail-account-copy strong,
.rail-account-copy span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rail-account-copy strong { color: var(--rail-text); font-size: .85rem; }
.rail-account-copy span { margin-top: 3px; color: var(--rail-muted); font-size: .68rem; }
.rail-account-chevron { display: grid; place-items: center; color: var(--rail-muted); }
.rail-account-dropdown { right: 0; left: auto; bottom: calc(100% + 8px); top: auto; }

/* Collapsed mode: icons only; text controls remain usable without labels. */
.sidebar-collapsed .app-rail { width: var(--rail-collapsed); padding-inline: 10px; }
.sidebar-collapsed .rail-workspace { margin-left: var(--rail-collapsed); }
.sidebar-collapsed .rail-brand { grid-template-columns: 1fr; min-height: 62px; padding: 8px; place-items: center; }
.sidebar-collapsed .rail-brand-mark { width: 44px; height: 44px; border-radius: 15px; }
.sidebar-collapsed .rail-brand-mark img { width: 35px; height: 35px; }
.sidebar-collapsed .rail-brand-text,
.sidebar-collapsed .rail-section-title,
.sidebar-collapsed .rail-nav-label,
.sidebar-collapsed .rail-nav-link.active::after,
.sidebar-collapsed .rail-account-copy,
.sidebar-collapsed .rail-account-chevron { display: none !important; }
.sidebar-collapsed .rail-collapse { right: -28px; }
.sidebar-collapsed .rail-scroll { padding-inline: 0; }
.sidebar-collapsed .rail-section { margin-bottom: 7px; }
.sidebar-collapsed .rail-nav-list { gap: 5px; }
.sidebar-collapsed .rail-nav-link { grid-template-columns: 1fr; min-height: 48px; padding: 6px; place-items: center; border-radius: 16px; }
.sidebar-collapsed .rail-nav-icon { width: 36px; height: 36px; }
.sidebar-collapsed .rail-footer { padding-inline: 0; }
.sidebar-collapsed .rail-preferences { grid-template-columns: 1fr; gap: 7px; }
.sidebar-collapsed .app-rail .theme-menu-rail .theme-trigger { width: 100%; min-width: 0; }
.sidebar-collapsed .rail-font-stepper { height: auto; grid-template-columns: 1fr; border-radius: 14px; }
.sidebar-collapsed .rail-font-button { min-height: 40px; }
.sidebar-collapsed .rail-font-reset { display: none; }
.sidebar-collapsed .rail-font-button + .rail-font-button { border-top: 1px solid var(--rail-control-border); }
.sidebar-collapsed .rail-account { grid-template-columns: 1fr; min-height: 56px; padding: 7px !important; place-items: center; }
.sidebar-collapsed .rail-account-avatar { width: 40px; height: 40px; }
.sidebar-collapsed .rail-account-dropdown { left: calc(100% + 12px); right: auto; bottom: 0; }

/* Mobile / tablet: drawer always expanded. */
.rail-overlay { display: none; }
.rail-mobile-open { display: none; }
@media (max-width: 1180px) {
  .app-rail,
  .sidebar-collapsed .app-rail {
    width: min(306px, calc(100vw - 20px));
    max-width: calc(100vw - 20px);
    padding: 12px 11px;
    transform: translateX(-105%);
    box-shadow: 25px 0 55px rgba(1,6,18,.30);
  }
  .app-rail.open,
  .sidebar-collapsed .app-rail.open { transform: translateX(0); }
  .rail-workspace,
  .sidebar-collapsed .rail-workspace { margin-left: 0; }
  .rail-collapse { display: none; }
  .rail-close { display: grid; }
  .rail-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: block;
    border: 0;
    background: rgba(2,8,20,.48);
    opacity: 0;
    pointer-events: none;
    backdrop-filter: blur(3px);
    transition: opacity .18s ease;
  }
  .rail-overlay.open { opacity: 1; pointer-events: auto; }
  .rail-mobile-open {
    position: sticky;
    top: 12px;
    z-index: 35;
    width: 46px;
    height: 46px;
    display: grid;
    place-items: center;
    margin: 12px 0 0 14px;
    padding: 0;
    border: 1px solid var(--rail-control-border);
    border-radius: 15px;
    background: var(--rail-control-bg);
    color: var(--rail-text);
    box-shadow: 0 12px 24px rgba(1,8,24,.14);
  }
  .sidebar-collapsed .rail-brand { grid-template-columns: 48px minmax(0,1fr); min-height: 70px; padding: 9px 13px; place-items: initial; }
  .sidebar-collapsed .rail-brand-mark { width: 48px; height: 48px; }
  .sidebar-collapsed .rail-brand-mark img { width: 38px; height: 38px; }
  .sidebar-collapsed .rail-brand-text,
  .sidebar-collapsed .rail-section-title,
  .sidebar-collapsed .rail-nav-label,
  .sidebar-collapsed .rail-account-copy,
  .sidebar-collapsed .rail-account-chevron { display: block !important; }
  .sidebar-collapsed .rail-nav-link { grid-template-columns: 38px minmax(0,1fr); min-height: 48px; padding: 6px 11px 6px 9px; place-items: initial; }
  .sidebar-collapsed .rail-preferences { grid-template-columns: 46px minmax(0,1fr); }
  .sidebar-collapsed .rail-font-stepper { height: 44px; grid-template-columns: 46px minmax(52px,1fr) 46px; }
  .sidebar-collapsed .rail-font-reset { display: block; border-inline: 1px solid var(--rail-control-border); }
  .sidebar-collapsed .rail-font-button + .rail-font-button { border-top: 0; }
  .sidebar-collapsed .rail-account { grid-template-columns: 42px minmax(0,1fr) 20px; min-height: 64px; padding: 9px 11px !important; place-items: initial; }
  .sidebar-collapsed .rail-account-dropdown { left: auto; right: 0; bottom: calc(100% + 8px); }
}

@media (max-width: 560px) {
  .rail-page-content { padding: 16px 12px 30px !important; }
  .app-rail,
  .sidebar-collapsed .app-rail { width: min(294px, calc(100vw - 12px)); max-width: calc(100vw - 12px); }
  .rail-brand-text small { font-size: .66rem; }
  .rail-nav-label { font-size: .81rem; }
}

/* Light mode polish for page background and floating menu. */
html[data-theme="light"] body {
  background: linear-gradient(180deg, #f6f9fc 0%, #f1f5f9 100%);
}
html[data-theme="light"] .rail-workspace,
html[data-theme="light"] .rail-page-content { background: transparent; }

/* Dark mode polish. */
html[data-theme="dark"] body {
  background: linear-gradient(180deg, #08131f 0%, #0a1723 100%);
}
html[data-theme="dark"] .rail-workspace,
html[data-theme="dark"] .rail-page-content { background: transparent; }

@media (prefers-reduced-motion: reduce) {
  .app-rail,
  .rail-workspace,
  .rail-overlay,
  .rail-nav-link { transition: none !important; }
}

@media print {
  .app-rail,
  .rail-overlay,
  .rail-mobile-open { display: none !important; }
  .rail-workspace { margin-left: 0 !important; }
}