/* =========================================================
   STYLE.CSS – TUTOR INTELIGENTE (global + dashboard)
   Secciones:
   0) Variables / Reset / Utilidades
   1) Componentes compartidos (botones, mensajes, tarjetas)
   2) DASHBOARD / MENÚ PRINCIPAL (menu.html)
   3) Responsivo
   ========================================================= */

/* =============== 0) Variables / Reset / Utilidades =============== */
:root {
  --p-azul: #4A90E2;
  --p-naranja: #F5A623;
  --p-verde: #7ED321;
  --p-rojo: #D0021B;
  --p-claro: #F5F7FA;
  --p-oscuro: #333333;
  --white: #FFFFFF;

  --muted: #8A8A8A;
  --line: #E7EBF3;
  --shadow: 0 6px 20px rgba(0,0,0,.08);
  --radius: 14px;

  --sb-expanded: 280px;
  --sb-collapsed: 76px;
  --sb-current: var(--sb-expanded);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin:0; }
body {
  font-family: Inter, system-ui, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--p-oscuro);
  background: var(--p-claro);
}
a { color: var(--p-azul); text-decoration: none; }

.hidden { display: none !important; }
.text-center { text-align: center; }

/* =============== 1) Componentes compartidos =============== */
.btn-primary {
  width: 100%;
  padding: 0.8rem;
  background: var(--p-azul);
  border: none;
  color: var(--white);
  font-size: 1rem;
  border-radius: 10px;
  cursor: pointer;
  transition: background .2s ease, opacity .2s ease;
}
.btn-primary:hover { background: #357ABD; }
.btn-primary:disabled { opacity: 0.7; cursor: default; }

.msg { min-height: 1.1em; margin-bottom: .8rem; font-size: .92rem; }
.msg-error { color: var(--p-rojo); }
.msg-ok { color: var(--p-verde); }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
}

/* === Formularios genéricos (para todas las vistas) === */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}
.input-group label {
  font-size: 0.9rem;
  color: var(--p-oscuro);
}
.input-group input,
.input-group select,
.input-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: 10px;
  outline: none;
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  border-color: var(--p-azul);
  box-shadow: 0 0 0 3px rgba(74,144,226,0.12);
}

.icon-btn {
  border: none;
  background: transparent;
  color: var(--p-oscuro);
  font-size: 18px;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 8px;
}
.icon-btn:hover { background: var(--p-claro); }

/* Utilidades para layouts de formularios en vistas */
.form-grid-2 {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}
.form-grid-1 {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

/* Listas tipo selección (usadas en Asignar) */
.list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: auto;
}
.list .row {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.list .row:last-child { border-bottom: none; }
.list-muted {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  min-height: 260px;
  border: 1px dashed var(--line);
  border-radius: 10px;
}

/* Responsivo para grids de formularios */
@media (max-width: 768px) {
  .form-grid-2 { grid-template-columns: 1fr; }
}

/* =============== 2) DASHBOARD / MENÚ PRINCIPAL =============== */
body.dashboard {
  display: grid;
  grid-template-columns: var(--sb-current) 1fr;
  grid-template-rows: 64px 1fr;
  grid-template-areas:
    "header header"
    "sidebar main";
  height: 100vh;
  overflow: hidden;
}
body.dashboard:has(.ti-sidebar.collapsed){
  --sb-current: var(--sb-collapsed);
}

/* Navbar */
.ti-navbar {
  grid-area: header;
  position: sticky; top: 0; z-index: 10;
  height: 64px;
  padding: 0 16px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.icon-btn {
  border: none; background: transparent; color: var(--p-oscuro);
  font-size: 20px; cursor: pointer; padding: 6px 8px; border-radius: 8px;
}
.icon-btn:hover { background: var(--p-claro); }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--p-azul); color: var(--white);
  font-weight: 700; font-size: 18px;
}
.brand-text { font-weight: 500; }

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

/* Dropdown usuario */
.avatar { border: none; background: transparent; padding: 0; cursor: pointer; }
.avatar img { width: 36px; height: 36px; border-radius: 50%; display: block; }
.user-menu { position: relative; }
.dropdown {
  position: absolute; right: 0; top: 48px;
  min-width: 200px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  list-style: none;
  padding: 8px; margin: 0;
}
.dropdown li a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px;
  color: inherit; text-decoration: none;
}
.dropdown li a:hover { background: var(--p-claro); }

/* Sidebar */
.ti-sidebar {
  grid-area: sidebar;
  background: var(--white);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 16px;
  padding: 16px;
  width: var(--sb-expanded);
  transition: width .25s ease, transform .25s ease;
}
.ti-sidebar.collapsed { width: var(--sb-collapsed); }

.sidebar-top .search {
  display: flex; align-items: center; gap: 10px;
  background: var(--p-claro);
  border: 1px solid var(--line);
  padding: 10px 12px;
  border-radius: 12px;
}
.sidebar-top .search input {
  border: none; outline: none; background: transparent; width: 100%;
}

.side-nav { display: flex; flex-direction: column; gap: 6px; }
.side-nav .item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 10px;
  color: inherit; text-decoration: none;
  cursor: pointer;
}
.side-nav .item:hover { background: var(--p-claro); }
.side-nav .item.active { background: rgba(74,144,226,.12); color: #1E5CB8; }

.ti-sidebar.collapsed .item span,
.ti-sidebar.collapsed .search input,
.ti-sidebar.collapsed .pill span { display: none; }

.ti-sidebar .pill {
  width: 100%;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--white);
  cursor: pointer;
}

.ti-sidebar .side-nav,
.ti-sidebar .side-nav .item,
.ti-sidebar .side-nav .item *:not(input):not(textarea) {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
.ti-sidebar .side-nav .item i { pointer-events: none; }
.ti-sidebar .side-nav .item { -webkit-tap-highlight-color: transparent; }

/* Main */
.ti-main {
  grid-area: main;
  padding: 20px;
  overflow: auto;
  min-width: 0;
}
.page-title h2 { margin: 4px 0 2px; }
.page-title p  { margin: 0; color: var(--muted); }

.card-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(3, minmax(220px, 1fr));
  margin: 16px 0;
}
.card-grid.wide { grid-template-columns: repeat(2, minmax(260px, 1fr)); }

.kpi h3 { margin: 0 0 10px; }
.kpi-num { font-size: 36px; font-weight: 800; color: #1E5CB8; }
.kpi-num.danger { color: var(--p-rojo); }
.kpi-note { color: var(--muted); }

.placeholder {
  height: 220px;
  border: 2px dashed var(--line);
  border-radius: 12px;
  display: grid; place-items: center;
  color: var(--muted);
}

.events { list-style: none; margin: 0; padding: 0; }
.events li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}
.events li:last-child { border-bottom: none; }

/* =============== 3) Responsivo =============== */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, minmax(220px, 1fr)); }
  .card-grid.wide { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  body.dashboard {
    grid-template-columns: 0 1fr;
    grid-template-rows: 64px 1fr;
  }
  .ti-sidebar{
    position: fixed; left: 12px; right: 12px; top: 80px; bottom: 12px; z-index: 9;
    width: var(--sb-expanded);
    border-radius: 16px;
    transform: translateX(-120%);
    box-shadow: var(--shadow);
    background: var(--white);
  }
  .ti-sidebar.show { transform: translateX(0); }
  .ti-sidebar.hidden { display: none !important; }
}