/* Belbotika design system — components.
 * Everything reads tokens.css. Every interactive target is at least
 * --bel-tap-target tall, every focus state is visible, and nothing assumes a
 * mouse. Class prefix bel- so Bootstrap 4 can stay loaded during the migration.
 */

/* ---- base ---------------------------------------------------------------- */
.bel-root {
  background: var(--bel-bg);
  color: var(--bel-text);
  font-family: var(--bel-font-sans);
  font-size: var(--bel-text-base);
  line-height: var(--bel-leading-normal);
  -webkit-font-smoothing: antialiased;
}
.bel-root *, .bel-root *::before, .bel-root *::after { box-sizing: border-box; }
.bel-root img, .bel-root video { max-width: 100%; height: auto; }

.bel-container { width: 100%; max-width: var(--bel-container); margin-inline: auto; padding-inline: var(--bel-gutter); }
.bel-container--narrow { max-width: var(--bel-container-narrow); }
.bel-stack > * + * { margin-top: var(--bel-space-4); }
.bel-row { display: flex; flex-wrap: wrap; gap: var(--bel-space-3); align-items: center; }
.bel-row--between { justify-content: space-between; }
.bel-grid { display: grid; gap: var(--bel-space-4); grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); }

/* ---- type ---------------------------------------------------------------- */
.bel-display { font-family: var(--bel-font-serif); font-size: var(--bel-text-4xl); line-height: var(--bel-leading-tight); letter-spacing: var(--bel-tracking-tight); font-weight: var(--bel-weight-regular); margin: 0; }
.bel-h1 { font-size: var(--bel-text-3xl); line-height: var(--bel-leading-tight); letter-spacing: var(--bel-tracking-tight); font-weight: var(--bel-weight-semibold); margin: 0; }
.bel-h2 { font-size: var(--bel-text-2xl); line-height: var(--bel-leading-snug); font-weight: var(--bel-weight-semibold); margin: 0; }
.bel-h3 { font-size: var(--bel-text-xl); line-height: var(--bel-leading-snug); font-weight: var(--bel-weight-semibold); margin: 0; }
.bel-lead { font-size: var(--bel-text-lg); color: var(--bel-text-muted); margin: 0; }
.bel-muted { color: var(--bel-text-muted); }
.bel-small { font-size: var(--bel-text-sm); }
.bel-serif-accent { font-family: var(--bel-font-serif); font-style: italic; }
.bel-link { color: var(--bel-link); text-underline-offset: 3px; }
.bel-link:hover { text-decoration: underline; }

/* ---- focus --------------------------------------------------------------- */
.bel-root :focus-visible { outline: 2px solid var(--bel-focus-ring); outline-offset: 2px; border-radius: var(--bel-radius-sm); }
.bel-skip-link { position: absolute; left: -9999px; top: 0; background: var(--bel-bg-raised); color: var(--bel-text); padding: var(--bel-space-3) var(--bel-space-4); border-radius: var(--bel-radius-md); z-index: var(--bel-z-toast); }
.bel-skip-link:focus { left: var(--bel-space-4); top: var(--bel-space-4); }

/* ---- button -------------------------------------------------------------- */
.bel-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--bel-space-2);
  min-height: var(--bel-tap-target); padding: var(--bel-space-3) var(--bel-space-5);
  border: var(--bel-border-width) solid transparent; border-radius: var(--bel-radius-pill);
  font: inherit; font-weight: var(--bel-weight-medium); line-height: 1;
  background: var(--bel-brand); color: var(--bel-on-brand);
  cursor: pointer; text-decoration: none; text-align: center;
  transition: background var(--bel-duration) var(--bel-ease), transform var(--bel-duration-fast) var(--bel-ease), box-shadow var(--bel-duration) var(--bel-ease);
}
.bel-btn:hover { background: var(--bel-brand-strong); color: var(--bel-on-brand); }
.bel-btn:active { transform: translateY(1px); }
.bel-btn[disabled], .bel-btn[aria-disabled='true'] { opacity: 0.55; cursor: not-allowed; transform: none; }
.bel-btn--secondary { background: var(--bel-bg-raised); color: var(--bel-text); border-color: var(--bel-border-strong); }
.bel-btn--secondary:hover { background: var(--bel-surface-hover); color: var(--bel-text); }
.bel-btn--ghost { background: transparent; color: var(--bel-text); }
.bel-btn--ghost:hover { background: var(--bel-surface-hover); color: var(--bel-text); }
.bel-btn--danger { background: var(--bel-danger); color: var(--bel-white); }
.bel-btn--danger:hover { background: var(--bel-danger); filter: brightness(0.92); }
.bel-btn--sm { min-height: 36px; padding: var(--bel-space-2) var(--bel-space-4); font-size: var(--bel-text-sm); }
.bel-btn--lg { min-height: 52px; padding: var(--bel-space-4) var(--bel-space-8); font-size: var(--bel-text-lg); }
.bel-btn--block { width: 100%; }
.bel-btn--icon { padding: var(--bel-space-3); min-width: var(--bel-tap-target); border-radius: var(--bel-radius-md); }

/* ---- card ---------------------------------------------------------------- */
.bel-card {
  background: var(--bel-bg-raised); border: var(--bel-border-width) solid var(--bel-border);
  border-radius: var(--bel-radius-lg); padding: var(--bel-space-5); box-shadow: var(--bel-shadow-sm);
}
.bel-card--flat { box-shadow: none; }
.bel-card--interactive { transition: box-shadow var(--bel-duration) var(--bel-ease), transform var(--bel-duration) var(--bel-ease); }
@media (hover: hover) and (pointer: fine) {
  .bel-card--interactive:hover { box-shadow: var(--bel-shadow-md); transform: translateY(-2px); }
}
.bel-card__title { font-size: var(--bel-text-lg); font-weight: var(--bel-weight-semibold); margin: 0 0 var(--bel-space-2); }
.bel-card__meta { color: var(--bel-text-muted); font-size: var(--bel-text-sm); }

/* ---- stat ---------------------------------------------------------------- */
.bel-stat { display: flex; flex-direction: column; gap: var(--bel-space-1); }
.bel-stat__value { font-size: var(--bel-text-2xl); font-weight: var(--bel-weight-semibold); letter-spacing: var(--bel-tracking-tight); }
.bel-stat__label { color: var(--bel-text-muted); font-size: var(--bel-text-sm); }
.bel-stat__delta { font-size: var(--bel-text-sm); font-weight: var(--bel-weight-medium); }
.bel-stat__delta--up { color: var(--bel-success); }
.bel-stat__delta--down { color: var(--bel-danger); }

/* ---- badge / pill -------------------------------------------------------- */
.bel-badge {
  display: inline-flex; align-items: center; gap: var(--bel-space-1);
  padding: 2px var(--bel-space-3); border-radius: var(--bel-radius-pill);
  font-size: var(--bel-text-xs); font-weight: var(--bel-weight-medium);
  background: var(--bel-bg-sunken); color: var(--bel-text-muted);
}
.bel-badge--brand { background: var(--bel-brand-soft); color: var(--bel-brand-strong); }
.bel-badge--success { background: var(--bel-success-soft); color: var(--bel-success); }
.bel-badge--warning { background: var(--bel-warning-soft); color: var(--bel-warning); }
.bel-badge--danger { background: var(--bel-danger-soft); color: var(--bel-danger); }

/* ---- form ---------------------------------------------------------------- */
.bel-field { display: flex; flex-direction: column; gap: var(--bel-space-2); }
.bel-label { font-size: var(--bel-text-sm); font-weight: var(--bel-weight-medium); }
.bel-input, .bel-select, .bel-textarea {
  width: 100%; min-height: var(--bel-tap-target);
  padding: var(--bel-space-3) var(--bel-space-4);
  font: inherit; font-size: var(--bel-text-base); /* 16px: iOS must not zoom on focus */
  color: var(--bel-text); background: var(--bel-bg-raised);
  border: var(--bel-border-width) solid var(--bel-border-strong); border-radius: var(--bel-radius-md);
  transition: border-color var(--bel-duration) var(--bel-ease), box-shadow var(--bel-duration) var(--bel-ease);
}
.bel-textarea { min-height: 120px; resize: vertical; }
.bel-input:focus, .bel-select:focus, .bel-textarea:focus { outline: none; border-color: var(--bel-brand); box-shadow: var(--bel-shadow-focus); }
.bel-input::placeholder, .bel-textarea::placeholder { color: var(--bel-text-subtle); }
.bel-input[aria-invalid='true'], .bel-textarea[aria-invalid='true'] { border-color: var(--bel-danger); }
.bel-help { font-size: var(--bel-text-sm); color: var(--bel-text-muted); }
.bel-error { font-size: var(--bel-text-sm); color: var(--bel-danger); }
.bel-check { display: flex; align-items: flex-start; gap: var(--bel-space-3); min-height: var(--bel-tap-target); }
.bel-check input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--bel-brand); }
.bel-switch { position: relative; display: inline-flex; align-items: center; width: 48px; height: 28px; border-radius: var(--bel-radius-pill); background: var(--bel-border-strong); cursor: pointer; transition: background var(--bel-duration) var(--bel-ease); }
.bel-switch[aria-checked='true'] { background: var(--bel-brand); }
.bel-switch::after { content: ''; position: absolute; left: 3px; width: 22px; height: 22px; border-radius: 50%; background: var(--bel-white); transition: transform var(--bel-duration) var(--bel-ease); }
.bel-switch[aria-checked='true']::after { transform: translateX(20px); }

/* ---- tabs / segmented ---------------------------------------------------- */
.bel-tabs { display: flex; gap: var(--bel-space-1); overflow-x: auto; scrollbar-width: none; border-bottom: var(--bel-border-width) solid var(--bel-border); }
.bel-tabs::-webkit-scrollbar { display: none; }
.bel-tab { flex: 0 0 auto; min-height: var(--bel-tap-target); padding: var(--bel-space-3) var(--bel-space-4); background: none; border: 0; border-bottom: 2px solid transparent; color: var(--bel-text-muted); font: inherit; font-weight: var(--bel-weight-medium); cursor: pointer; }
.bel-tab[aria-selected='true'] { color: var(--bel-text); border-bottom-color: var(--bel-brand); }
.bel-segmented { display: inline-flex; padding: var(--bel-space-1); gap: var(--bel-space-1); background: var(--bel-bg-sunken); border-radius: var(--bel-radius-pill); }
.bel-segmented__item { min-height: 36px; padding: 0 var(--bel-space-4); border: 0; border-radius: var(--bel-radius-pill); background: transparent; color: var(--bel-text-muted); font: inherit; font-size: var(--bel-text-sm); cursor: pointer; }
.bel-segmented__item[aria-pressed='true'] { background: var(--bel-bg-raised); color: var(--bel-text); box-shadow: var(--bel-shadow-sm); }

/* ---- table (scrolls, never squashes) ------------------------------------- */
.bel-table-wrap { overflow-x: auto; border: var(--bel-border-width) solid var(--bel-border); border-radius: var(--bel-radius-lg); background: var(--bel-bg-raised); }
.bel-table { width: 100%; border-collapse: collapse; font-size: var(--bel-text-sm); }
.bel-table th, .bel-table td { padding: var(--bel-space-3) var(--bel-space-4); text-align: left; white-space: nowrap; }
.bel-table thead th { position: sticky; top: 0; background: var(--bel-bg-sunken); color: var(--bel-text-muted); font-weight: var(--bel-weight-medium); }
.bel-table tbody tr + tr td { border-top: var(--bel-border-width) solid var(--bel-border); }
.bel-table tbody tr:hover td { background: var(--bel-surface-hover); }

/* ---- alert / toast ------------------------------------------------------- */
.bel-alert { display: flex; gap: var(--bel-space-3); padding: var(--bel-space-4); border-radius: var(--bel-radius-md); background: var(--bel-info-soft); color: var(--bel-text); border-left: 3px solid var(--bel-info); }
.bel-alert--success { background: var(--bel-success-soft); border-left-color: var(--bel-success); }
.bel-alert--warning { background: var(--bel-warning-soft); border-left-color: var(--bel-warning); }
.bel-alert--danger { background: var(--bel-danger-soft); border-left-color: var(--bel-danger); }
.bel-toast-region { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(var(--bel-space-4) + env(safe-area-inset-bottom, 0px)); z-index: var(--bel-z-toast); display: flex; flex-direction: column; gap: var(--bel-space-2); width: min(420px, calc(100vw - 2 * var(--bel-space-4))); }
.bel-toast { padding: var(--bel-space-3) var(--bel-space-4); border-radius: var(--bel-radius-md); background: var(--bel-bg-inverse); color: var(--bel-text-on-inverse); box-shadow: var(--bel-shadow-md); }

/* ---- empty state / skeleton ---------------------------------------------- */
.bel-empty { text-align: center; padding: var(--bel-space-10) var(--bel-space-4); border: 1px dashed var(--bel-border-strong); border-radius: var(--bel-radius-lg); }
.bel-empty__title { font-size: var(--bel-text-lg); font-weight: var(--bel-weight-semibold); margin: 0 0 var(--bel-space-2); }
.bel-skeleton { border-radius: var(--bel-radius-sm); background: linear-gradient(90deg, var(--bel-bg-sunken) 25%, var(--bel-surface-hover) 37%, var(--bel-bg-sunken) 63%); background-size: 400% 100%; animation: bel-shimmer 1.4s ease infinite; min-height: 1em; }
@keyframes bel-shimmer { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }
@media (prefers-reduced-motion: reduce) { .bel-skeleton { animation: none; } }

/* ---- avatar -------------------------------------------------------------- */
.bel-avatar { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: var(--bel-brand-soft); color: var(--bel-brand-strong); font-weight: var(--bel-weight-semibold); overflow: hidden; }
.bel-avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ---- modal / sheet (a sheet on phones, a dialog on desktop) -------------- */
.bel-overlay { position: fixed; inset: 0; background: rgba(18, 17, 16, 0.5); z-index: var(--bel-z-overlay); }
.bel-modal { position: fixed; z-index: var(--bel-z-modal); background: var(--bel-bg-raised); color: var(--bel-text); box-shadow: var(--bel-shadow-lg);
  left: 0; right: 0; bottom: 0; border-radius: var(--bel-radius-xl) var(--bel-radius-xl) 0 0;
  padding: var(--bel-space-5); padding-bottom: calc(var(--bel-space-5) + env(safe-area-inset-bottom, 0px));
  max-height: 88vh; overflow-y: auto; }
@media (min-width: 768px) {
  .bel-modal { left: 50%; top: 50%; right: auto; bottom: auto; transform: translate(-50%, -50%); width: min(560px, calc(100vw - 4rem)); border-radius: var(--bel-radius-xl); }
}
.bel-modal__title { font-size: var(--bel-text-xl); font-weight: var(--bel-weight-semibold); margin: 0 0 var(--bel-space-3); }

/* ---- app shell ----------------------------------------------------------- */
.bel-shell { min-height: 100dvh; display: flex; flex-direction: column; background: var(--bel-bg); }
.bel-header { position: sticky; top: 0; z-index: var(--bel-z-header); display: flex; align-items: center; gap: var(--bel-space-3);
  height: calc(var(--bel-header-height) + env(safe-area-inset-top, 0px)); padding: 0 var(--bel-gutter); padding-top: env(safe-area-inset-top, 0px);
  background: color-mix(in srgb, var(--bel-bg) 88%, transparent); backdrop-filter: blur(12px);
  border-bottom: var(--bel-border-width) solid var(--bel-border); }
.bel-brandmark { display: inline-flex; align-items: center; gap: var(--bel-space-2); font-weight: var(--bel-weight-semibold); color: var(--bel-text); text-decoration: none; }
.bel-main { flex: 1; padding-block: var(--bel-space-6); }
.bel-rail { display: none; }
@media (min-width: 1024px) {
  .bel-shell--app { display: grid; grid-template-columns: var(--bel-rail-width) 1fr; grid-template-rows: auto 1fr; }
  .bel-shell--app .bel-header { grid-column: 1 / -1; }
  .bel-rail { display: block; position: sticky; top: var(--bel-header-height); align-self: start; height: calc(100dvh - var(--bel-header-height)); overflow-y: auto; padding: var(--bel-space-4); border-right: var(--bel-border-width) solid var(--bel-border); }
}
.bel-navlink { display: flex; align-items: center; gap: var(--bel-space-3); min-height: var(--bel-tap-target); padding: var(--bel-space-2) var(--bel-space-3); border-radius: var(--bel-radius-md); color: var(--bel-text-muted); text-decoration: none; font-weight: var(--bel-weight-medium); }
.bel-navlink:hover { background: var(--bel-surface-hover); color: var(--bel-text); }
.bel-navlink[aria-current='page'] { background: var(--bel-surface-selected); color: var(--bel-brand-strong); }
/* Phone: the same navigation as a bottom bar, thumb-first. */
.bel-tabbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--bel-z-rail); display: flex; justify-content: space-around;
  padding: var(--bel-space-2) var(--bel-space-2) calc(var(--bel-space-2) + env(safe-area-inset-bottom, 0px));
  background: var(--bel-bg-raised); border-top: var(--bel-border-width) solid var(--bel-border); }
.bel-tabbar__item { display: flex; flex-direction: column; align-items: center; gap: 2px; min-width: var(--bel-tap-target); min-height: var(--bel-tap-target); justify-content: center; color: var(--bel-text-muted); text-decoration: none; font-size: var(--bel-text-xs); }
.bel-tabbar__item[aria-current='page'] { color: var(--bel-brand-strong); }
@media (min-width: 1024px) { .bel-tabbar { display: none; } }
.bel-shell--app .bel-main { padding-bottom: calc(var(--bel-space-16) + env(safe-area-inset-bottom, 0px)); }
@media (min-width: 1024px) { .bel-shell--app .bel-main { padding-bottom: var(--bel-space-10); } }

/* ---- responsive utilities (last, and deliberately forceful) -------------- */
.bel-hide-sm { display: none !important; }
.bel-only-sm { display: revert !important; }
@media (min-width: 768px) {
  .bel-hide-sm { display: revert !important; }
  .bel-only-sm { display: none !important; }
}