/*
  SHELL — sidebar (granatowy gradient + sylwetka gór), topbar, szuflada mobilna, zwijanie sidebaru.
  Używa wyłącznie tokenów z tokens.css.
*/

/* ===================== UKŁAD ===================== */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: 100vh;
  transition: grid-template-columns var(--dur-slow) var(--ease-standard);
}
.app-main-col { min-width: 0; }

html[data-sidebar="collapsed"] .app-shell { --sidebar-w: var(--sidebar-w-collapsed); }

/* ===================== SIDEBAR / SZUFLADA ===================== */
.sidebar,
.drawer {
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  isolation: isolate;
}
.drawer { overflow: hidden; }
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  border-right: 0;
  padding: var(--space-6) var(--space-4) var(--space-5);
  box-shadow: 8px 0 32px -18px rgba(20, 18, 70, 0.55);
}
.sidebar::before,
.drawer::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: min(52%, 420px);
  background: url("../img/sidebar-mountains.svg") center bottom / 100% auto no-repeat;
  z-index: -1;
  pointer-events: none;
}
.sidebar::after,
.drawer::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 300px;
  background: radial-gradient(circle at 100% 0, rgba(128, 98, 247, 0.34), transparent 62%);
  z-index: -1;
  pointer-events: none;
}

.brand { padding: var(--space-1) var(--space-2) var(--space-6); gap: var(--space-3); }
.brand-mark {
  width: 42px; height: 42px;
  border-radius: 13px;
  background: var(--accent-gradient);
  font-size: var(--fs-base);
  letter-spacing: 0.02em;
  box-shadow: 0 10px 22px -6px rgba(109, 74, 238, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}
.brand-title { font-weight: var(--fw-semibold); font-size: var(--fs-md); letter-spacing: -0.015em; color: var(--sidebar-text-strong); }
.brand-sub { font-size: var(--fs-xs); color: var(--sidebar-text-muted); }
.sidebar .brand-text, .drawer .brand-text { min-width: 0; }
.sidebar .brand-title { white-space: nowrap; }

.sidebar .nav-list, .drawer .nav-list { gap: 4px; }
.sidebar .nav-group-label, .drawer .nav-group-label {
  font-size: var(--fs-2xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.1em;
  color: var(--sidebar-text-muted);
  padding: var(--space-6) var(--space-3) var(--space-2);
}
.sidebar .nav-list > .nav-group-label:first-child,
.drawer .nav-list > .nav-group-label:first-child { padding-top: var(--space-1); }

.sidebar .nav-item, .drawer .nav-item {
  position: relative;
  gap: var(--space-3);
  padding: 0.7rem var(--space-3);
  border-radius: 12px;
  color: var(--sidebar-text);
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  letter-spacing: -0.005em;
  transition: background var(--dur-fast) var(--ease-standard), color var(--dur-fast) var(--ease-standard);
}
.sidebar .nav-item .icon, .drawer .nav-item .icon {
  width: 20px; height: 20px;
  color: var(--sidebar-text);
  opacity: 0.9;
  transition: color var(--dur-fast) var(--ease-standard), opacity var(--dur-fast);
}
.sidebar .nav-item:hover, .drawer .nav-item:hover { background: var(--sidebar-hover); color: var(--sidebar-text-strong); }
.sidebar .nav-item:hover .icon, .drawer .nav-item:hover .icon { color: var(--sidebar-text-strong); opacity: 1; }
.sidebar .nav-item[aria-current="page"], .drawer .nav-item[aria-current="page"] {
  background: var(--sidebar-active-gradient);
  color: var(--sidebar-text-strong);
  font-weight: var(--fw-semibold);
  box-shadow: var(--sidebar-active-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.sidebar .nav-item[aria-current="page"] .icon, .drawer .nav-item[aria-current="page"] .icon { color: #fff; opacity: 1; }

.sidebar :focus-visible, .drawer :focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
  box-shadow: 0 0 0 5px rgba(138, 108, 249, 0.55);
}

.drawer {
  width: min(86vw, 320px);
  padding: var(--space-5) var(--space-4) var(--space-4);
  box-shadow: 24px 0 60px -12px rgba(10, 8, 40, 0.6);
}
.drawer .shell-inline-between { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-2); }
.drawer .btn-ghost { color: var(--sidebar-text); }
.drawer .btn-ghost:hover { background: var(--sidebar-hover); color: #fff; }
.drawer .sidebar-foot { border-top-color: var(--sidebar-border); }
.drawer .sidebar-foot .btn {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--sidebar-border);
  color: #fff;
  box-shadow: none;
}
.drawer .sidebar-foot .btn:hover { background: rgba(255, 255, 255, 0.14); }
.drawer-backdrop { background: rgba(14, 12, 48, 0.55); -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px); }

/* --- Sidebar zwinięty (tylko desktop) --- */
@media (min-width: 861px) {
  html[data-sidebar="collapsed"] .sidebar { padding-left: var(--space-3); padding-right: var(--space-3); }
  html[data-sidebar="collapsed"] .sidebar .brand { justify-content: center; padding-left: 0; padding-right: 0; }
  html[data-sidebar="collapsed"] .sidebar .brand-text,
  html[data-sidebar="collapsed"] .sidebar .nav-item > span {
    position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden;
    clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
  }
  html[data-sidebar="collapsed"] .sidebar .nav-group-label {
    height: 1px; padding: 0; margin: var(--space-4) var(--space-3);
    background: var(--sidebar-border); font-size: 0; overflow: hidden;
  }
  html[data-sidebar="collapsed"] .sidebar .nav-list > .nav-group-label:first-child { display: none; }
  html[data-sidebar="collapsed"] .sidebar .nav-item { justify-content: center; padding-left: 0; padding-right: 0; }
  html[data-sidebar="collapsed"] .sidebar::before { opacity: 0.55; }
  html[data-sidebar="collapsed"] .sidebar .nav-list { overflow: visible; }
  /* podpowiedź z nazwą pozycji (a11y: nazwa jest nadal w DOM, tylko ukryta wizualnie) */
  html[data-sidebar="collapsed"] .sidebar .nav-item::after {
    content: attr(data-label);
    position: absolute;
    left: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%);
    background: #14163A;
    color: #fff;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    padding: 0.4rem 0.7rem;
    border-radius: 8px;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-fast) var(--ease-standard);
    z-index: var(--z-tooltip);
  }
  html[data-sidebar="collapsed"] .sidebar .nav-item:hover::after,
  html[data-sidebar="collapsed"] .sidebar .nav-item:focus-visible::after { opacity: 1; }
}

/* ===================== TOPBAR ===================== */
.topbar {
  height: var(--topbar-h);
  padding: 0 var(--space-8);
  gap: var(--space-3);
  background: rgba(244, 243, 251, 0.82);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 0;
}
.topbar-title {
  display: none;
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.sidebar-toggle,
.menu-btn {
  width: 42px; height: 42px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-xs);
  align-items: center; justify-content: center;
  cursor: pointer;
  transition: background var(--dur-fast), color var(--dur-fast), box-shadow var(--dur-fast), border-color var(--dur-fast);
}
.sidebar-toggle { display: inline-flex; }
.sidebar-toggle:hover, .menu-btn:hover { color: var(--color-accent); border-color: var(--color-border-strong); box-shadow: var(--shadow-sm); }
.sidebar-toggle .icon { transition: transform var(--dur-base) var(--ease-standard); }
html[data-sidebar="collapsed"] .sidebar-toggle .icon { transform: scaleX(-1); }

.user-menu-btn {
  gap: var(--space-2);
  padding: 0.3rem 0.8rem 0.3rem 0.3rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  transition: box-shadow var(--dur-fast), border-color var(--dur-fast);
}
.user-menu-btn:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-sm); }
.user-avatar {
  width: 34px; height: 34px;
  background: var(--accent-gradient);
  color: #fff;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.user-menu-name { font-size: var(--fs-sm); }
.user-menu-panel { border-radius: var(--radius-md); box-shadow: var(--shadow-md); }

/* ===================== TREŚĆ ===================== */
.view-container {
  padding: var(--space-2) var(--space-8) var(--space-12);
  max-width: var(--content-max);
}

/* ===================== MOBILE ===================== */
@media (max-width: 860px) {
  .app-shell { grid-template-columns: minmax(0, 1fr); }
  .sidebar-toggle { display: none; }
  .topbar { padding: 0 var(--space-4); }
  .topbar-title { display: block; max-width: 48vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .view-container { padding: var(--space-2) var(--space-4) calc(var(--space-16) + var(--space-6)); }
  .fab { background: var(--accent-gradient); box-shadow: 0 16px 28px -8px rgba(109, 74, 238, 0.6); }
}

/* zamknięta szuflada nie rzuca cienia na lewą krawędź ekranu */
.drawer:not(.is-open) { box-shadow: none; }