/* ============ UI ELEMENTS ============ */

/* ---- Button variants (extends .btn from _components) ---- */
.btn--secondary {
  background: var(--bg-muted);
  color: var(--t-base);
  border-color: var(--border);
}
.btn--secondary:hover { background: var(--bg-hover); border-color: var(--t-light); }

.btn--success { background: var(--success); color: #fff; }
.btn--success:hover { background: color-mix(in oklab, var(--success) 90%, black); }
.btn--danger  { background: var(--danger); color: #fff; }
.btn--danger:hover { background: color-mix(in oklab, var(--danger) 90%, black); }
.btn--warning { background: var(--warning); color: #fff; }
.btn--warning:hover { background: color-mix(in oklab, var(--warning) 90%, black); }
.btn--info    { background: var(--info); color: #fff; }
.btn--info:hover { background: color-mix(in oklab, var(--info) 90%, black); }

.btn--soft-primary { background: var(--primary-soft); color: var(--primary); }
.btn--soft-primary:hover { background: color-mix(in oklab, var(--primary-soft) 80%, var(--primary) 8%); }
.btn--soft-success { background: var(--success-soft); color: var(--success); }
.btn--soft-danger  { background: var(--danger-soft);  color: var(--danger); }
.btn--soft-warning { background: var(--warning-soft); color: var(--warning); }
.btn--soft-info    { background: var(--info-soft);    color: var(--info); }

.btn--outline-primary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--outline-primary:hover { background: var(--primary-soft); }
.btn--outline-danger  { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn--outline-danger:hover { background: var(--danger-soft); }
.btn--outline-success { background: transparent; color: var(--success); border-color: var(--success); }
.btn--outline-success:hover { background: var(--success-soft); }

.btn--lg { padding: 12px 18px; font-size: 14px; }
.btn--sm { padding: 6px 10px; font-size: 11.5px; }
.btn--icon { padding: 9px; }
.btn--icon svg { margin: 0; }

.btn-group {
  display: inline-flex;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 0 1px var(--border);
}
.btn-group .btn {
  border-radius: 0;
  border: 0;
  box-shadow: none;
  border-right: 1px solid var(--border);
}
.btn-group .btn:last-child { border-right: 0; }
.btn-group .btn.is-active {
  background: var(--primary-soft);
  color: var(--primary);
}

/* ---- Alert ---- */
.alert {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.5;
  background: var(--bg-muted);
  color: var(--t-base);
  border-left: 3px solid var(--t-muted);
}
.alert + .alert { margin-top: 10px; }
.alert .ico {
  width: 20px; height: 20px;
  display: grid; place-items: center;
  border-radius: 6px;
  color: var(--t-muted);
  flex-shrink: 0;
}
.alert .ico svg { width: 14px; height: 14px; stroke: currentColor; stroke-width: 2; fill: none; }
.alert .body { min-width: 0; }
.alert .title { font-weight: 600; color: var(--t-base); margin-bottom: 2px; }
.alert .close {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 5px;
  color: var(--t-light);
  transition: background 160ms, color 160ms;
}
.alert .close:hover { background: var(--bg-hover); color: var(--t-base); }
.alert .close svg { width: 12px; height: 12px; stroke: currentColor; stroke-width: 2; fill: none; }

.alert.success { background: var(--success-soft); border-left-color: var(--success); }
.alert.success .ico { background: color-mix(in oklab, var(--success) 14%, transparent); color: var(--success); }
.alert.danger  { background: var(--danger-soft);  border-left-color: var(--danger); }
.alert.danger  .ico { background: color-mix(in oklab, var(--danger) 14%, transparent); color: var(--danger); }
.alert.warning { background: var(--warning-soft); border-left-color: var(--warning); }
.alert.warning .ico { background: color-mix(in oklab, var(--warning) 14%, transparent); color: var(--warning); }
.alert.info    { background: var(--info-soft);    border-left-color: var(--info); }
.alert.info    .ico { background: color-mix(in oklab, var(--info) 14%, transparent); color: var(--info); }
.alert.primary { background: var(--primary-soft); border-left-color: var(--primary); }
.alert.primary .ico { background: color-mix(in oklab, var(--primary) 14%, transparent); color: var(--primary); }

/* ---- Badge ---- */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 10.5px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 999px;
  letter-spacing: 0.02em;
  line-height: 1.4;
  background: var(--bg-muted);
  color: var(--t-muted);
}
.badge.primary { background: var(--primary-soft); color: var(--primary); }
.badge.success { background: var(--success-soft); color: var(--success); }
.badge.danger  { background: var(--danger-soft);  color: var(--danger); }
.badge.warning { background: var(--warning-soft); color: var(--warning); }
.badge.info    { background: var(--info-soft);    color: var(--info); }
.badge.purple  { background: var(--purple-soft);  color: var(--purple); }
.badge.solid {
  background: var(--primary); color: #fff;
}
.badge.dot::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ---- Progress ---- */
.progress {
  width: 100%;
  height: 8px;
  background: var(--bg-muted);
  border-radius: 999px;
  overflow: hidden;
}
.progress.thin { height: 4px; }
.progress.tall { height: 14px; }
.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 999px;
  transform-origin: left;
  animation: bar-in 900ms cubic-bezier(.2,.7,.2,1) both;
}
.progress-fill.success { background: var(--success); }
.progress-fill.danger  { background: var(--danger); }
.progress-fill.warning { background: var(--warning); }
.progress-fill.info    { background: var(--info); }
.progress-fill.gradient { background: linear-gradient(90deg, var(--primary), var(--purple)); }
.progress-fill.striped {
  background-image: linear-gradient(45deg,
    rgba(255,255,255,.16) 25%, transparent 25%,
    transparent 50%, rgba(255,255,255,.16) 50%,
    rgba(255,255,255,.16) 75%, transparent 75%, transparent);
  background-size: 12px 12px;
}

/* ---- Spinner ---- */
.spinner {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 2.5px solid var(--bg-muted);
  border-top-color: var(--primary);
  animation: spin 700ms linear infinite;
  display: inline-block;
}
.spinner.sm { width: 14px; height: 14px; border-width: 2px; }
.spinner.lg { width: 36px; height: 36px; border-width: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
}
.tab {
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--t-muted);
  border-bottom: 2px solid transparent;
  transition: color 160ms, border-color 160ms;
  position: relative;
  top: 1px;
  cursor: pointer;
}
.tab:hover { color: var(--t-base); }
.tab.is-active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}
.tab .badge { margin-left: 6px; }

.tabs.pills {
  border-bottom: 0;
  background: var(--bg-muted);
  border-radius: 9px;
  padding: 3px;
  display: inline-flex;
}
.tabs.pills .tab {
  border-radius: 7px;
  border-bottom: 0;
  top: 0;
  padding: 7px 12px;
  font-size: 12.5px;
}
.tabs.pills .tab.is-active {
  background: var(--bg-card);
  color: var(--t-base);
  box-shadow: var(--shadow-sm);
}

.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: rise-in 320ms ease both; }

/* ---- Accordion ---- */
.accordion { display: flex; flex-direction: column; gap: 8px; }
.accordion-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-card);
}
.accordion-trigger {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%;
  padding: 14px 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--t-base);
  text-align: left;
  transition: background 160ms;
}
.accordion-trigger:hover { background: var(--bg-hover); }
.accordion-trigger .chev {
  width: 13px; height: 13px;
  transition: transform 240ms ease;
  color: var(--t-muted);
}
.accordion-trigger .chev svg { width: 100%; height: 100%; stroke: currentColor; stroke-width: 2; fill: none; }
.accordion-item.is-open .accordion-trigger .chev { transform: rotate(180deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 320ms cubic-bezier(.4,0,.2,1);
  font-size: 13px;
  color: var(--t-muted);
  line-height: 1.6;
}
.accordion-body-inner { padding: 0 16px 14px; }
.accordion-item.is-open .accordion-body { max-height: 400px; }

/* ---- Modal (static demo) ---- */
.modal-demo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-width: 480px;
}
.modal-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-soft);
}
.modal-title {
  font-family: 'Inter Tight', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--t-base);
  letter-spacing: -0.012em;
}
.modal-body {
  padding: 18px 20px;
  font-size: 13.5px;
  color: var(--t-muted);
  line-height: 1.6;
}
.modal-foot {
  display: flex; justify-content: flex-end; gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border-soft);
  background: var(--bg-card);
}

/* ---- Tooltip / Popover (static demo positioning) ---- */
.popover-demo {
  position: relative;
  display: inline-block;
}
.popover-demo .pop {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--t-base);
  color: var(--bg-card);
  font-size: 11.5px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
}
.popover-demo .pop::after {
  content: '';
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--t-base);
}

/* ---- Avatar group ---- */
.avatar-group {
  display: inline-flex;
  align-items: center;
}
.avatar-group .av {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  color: #fff;
  font-size: 11.5px;
  font-weight: 600;
  border: 2px solid var(--bg-card);
  margin-left: -8px;
  flex-shrink: 0;
}
.avatar-group .av:first-child { margin-left: 0; }
.avatar-group .av.more {
  background: var(--bg-muted);
  color: var(--t-muted);
  font-size: 10.5px;
}

/* ---- Section heading helper ---- */
.section-h {
  display: flex; align-items: baseline; gap: 12px;
  font-family: 'Inter Tight', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--t-base);
  letter-spacing: -0.012em;
  margin: 0 0 14px;
}
.section-h .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--t-light);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.demo-row {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
}