/* ==========================================
   ULTRAKIT TABLE OF CONTENTS — Premium
   7 Styles × Numbering × Nested / Flat × Sticky × Progress
   ========================================== */

.ultrakit-toc-wrapper {
    --toc-accent: #6c5ce7;
    --toc-accent2: #fd79a8;
    --toc-text: #4a4a5a;
    --toc-title: #1a1a2e;
    --toc-line: #e6e6f0;
    --toc-top: 100px;
    --toc-max: none;
    position: relative;
    width: 100%;
    box-sizing: border-box;
    font-family: inherit;
    color: var(--toc-text);
    border-radius: 18px;
    overflow: hidden;
}
.ultrakit-toc-wrapper *, .ultrakit-toc-wrapper *::before, .ultrakit-toc-wrapper *::after { box-sizing: border-box; }
.ultrakit-toc-wrapper.toc-sticky { position: sticky; top: var(--toc-top); align-self: flex-start; }
.ultrakit-toc-wrapper.toc-hidden { display: none; }

/* head */
.ultrakit-toc-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 22px 14px; }
.ultrakit-toc-head-main { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.ultrakit-toc-icon { display: inline-flex; align-items: center; color: var(--toc-accent); font-size: 18px; }
.ultrakit-toc-icon i { line-height: 1; }
.ultrakit-toc-icon svg { width: 1em !important; height: 1em !important; fill: currentColor; flex-shrink: 0; }
.ultrakit-toc-title { font-size: 17px; font-weight: 800; line-height: 1.25; color: var(--toc-title); }
.ultrakit-toc-pct { margin-left: auto; font-size: 12px; font-weight: 800; color: var(--toc-accent); font-variant-numeric: tabular-nums; }
.ultrakit-toc-toggle { flex: 0 0 auto; width: 32px; height: 32px; padding: 0 !important; box-sizing: border-box; display: flex; align-items: center; justify-content: center; background: color-mix(in srgb, var(--toc-accent) 12%, transparent); color: var(--toc-accent) !important; border: none; border-radius: 50%; cursor: pointer; transition: transform 0.3s ease; }
.ultrakit-toc-toggle svg { width: 18px !important; height: 18px !important; flex-shrink: 0; }
.is-collapsed .ultrakit-toc-toggle { transform: rotate(-90deg); }

/* progress */
.ultrakit-toc-bar { height: 4px; background: var(--toc-line); }
.ultrakit-toc-bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--toc-accent), var(--toc-accent2)); transition: width 0.15s linear; }

/* body */
.ultrakit-toc-body { padding: 14px 16px 18px; max-height: var(--toc-max); overflow-y: auto; transition: max-height 0.4s ease, padding 0.3s ease, opacity 0.3s ease; }
.is-collapsed .ultrakit-toc-body { max-height: 0 !important; padding-top: 0; padding-bottom: 0; opacity: 0; overflow: hidden; }
.ultrakit-toc-empty { display: none; margin: 0; padding: 6px 8px; font-size: 13.5px; opacity: 0.7; }
.ultrakit-toc-wrapper:not(.toc-has-items) .ultrakit-toc-empty { display: block; }

/* list */
.ultrakit-toc-list { list-style: none; margin: 0; padding: 0; }
.ultrakit-toc-sub { margin-top: 2px; }
.toc-nested .ultrakit-toc-sub { padding-left: 16px; }
.toc-flat .ultrakit-toc-item.is-l3 .ultrakit-toc-link { padding-left: 22px; }
.toc-flat .ultrakit-toc-item.is-l4 .ultrakit-toc-link { padding-left: 34px; }
.toc-flat .ultrakit-toc-item.is-l5 .ultrakit-toc-link, .toc-flat .ultrakit-toc-item.is-l6 .ultrakit-toc-link { padding-left: 46px; }
.ultrakit-toc-item { margin: 0; padding: 0; }
.ultrakit-toc-item::before, .ultrakit-toc-item::marker { content: none; }

.ultrakit-toc-link {
    position: relative; display: flex; align-items: baseline; gap: 9px;
    padding: 8px 12px; border-radius: 10px;
    color: var(--toc-text) !important; font-size: 14.5px; font-weight: 600; line-height: 1.45;
    text-decoration: none !important;
    transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease, padding 0.25s ease;
}
.ultrakit-toc-link:hover { color: var(--toc-accent) !important; background: color-mix(in srgb, var(--toc-accent) 8%, transparent); }
.ultrakit-toc-link.is-active { color: var(--toc-accent) !important; background: color-mix(in srgb, var(--toc-accent) 12%, transparent); font-weight: 800; }
.ultrakit-toc-num { flex: 0 0 auto; min-width: 1.6em; color: var(--toc-accent); font-weight: 800; font-size: 0.9em; font-variant-numeric: tabular-nums; }
.is-l3 > .ultrakit-toc-link, .is-l4 > .ultrakit-toc-link { font-weight: 500; font-size: 13.5px; }
.toc-num-none .ultrakit-toc-link::before { content: ''; flex: 0 0 6px; width: 6px; height: 6px; margin-top: 0.5em; border-radius: 50%; background: color-mix(in srgb, var(--toc-accent) 45%, transparent); transition: transform 0.25s ease, background 0.25s ease; }
.toc-num-none .ultrakit-toc-link.is-active::before, .toc-num-none .ultrakit-toc-link:hover::before { background: var(--toc-accent); transform: scale(1.4); }

/* ---------- Style: White card ---------- */
.toc-style-card { background: #ffffff; box-shadow: 0 10px 40px rgba(0,0,0,0.08); }
.toc-style-card .ultrakit-toc-link.is-active { box-shadow: inset 3px 0 0 var(--toc-accent); }

/* ---------- Style: Minimal rail ---------- */
.toc-style-rail { border-radius: 0; background: transparent; overflow: visible; }
.toc-style-rail .ultrakit-toc-head { padding-left: 0; }
.toc-style-rail .ultrakit-toc-body { padding-left: 0; padding-right: 0; }
.toc-style-rail .ultrakit-toc-nav { border-left: 2px solid var(--toc-line); }
.toc-style-rail .ultrakit-toc-link { border-radius: 0; margin-left: -2px; padding: 7px 16px; border-left: 2px solid transparent; background: transparent !important; }
.toc-style-rail .ultrakit-toc-link.is-active { border-left-color: var(--toc-accent); }
.toc-style-rail .ultrakit-toc-link::before { display: none; }
.toc-style-rail .ultrakit-toc-bar { display: none; }

/* ---------- Style: Timeline dots ---------- */
.toc-style-timeline { background: #ffffff; box-shadow: 0 10px 40px rgba(0,0,0,0.07); }
.toc-style-timeline .ultrakit-toc-nav { position: relative; padding-left: 10px; }
.toc-style-timeline .ultrakit-toc-nav::before { content: ''; position: absolute; left: 16px; top: 10px; bottom: 10px; width: 2px; background: var(--toc-line); }
.toc-style-timeline .ultrakit-toc-link { padding-left: 30px; background: transparent !important; }
.toc-style-timeline .ultrakit-toc-link::before { content: '' !important; position: absolute; left: 6px; top: 50%; width: 12px; height: 12px; margin: -6px 0 0; border-radius: 50%; background: #ffffff !important; border: 2.5px solid var(--toc-line); flex: none; transform: none !important; transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease; }
.toc-style-timeline .ultrakit-toc-link:hover::before { border-color: var(--toc-accent); }
.toc-style-timeline .ultrakit-toc-link.is-active::before { background: var(--toc-accent) !important; border-color: var(--toc-accent); box-shadow: 0 0 0 5px color-mix(in srgb, var(--toc-accent) 22%, transparent); }
.toc-style-timeline .ultrakit-toc-sub { padding-left: 0; }

/* ---------- Style: Accent header box ---------- */
.toc-style-boxed { background: #ffffff; border: 2px solid var(--toc-accent); border-radius: 14px; }
.toc-style-boxed .ultrakit-toc-head { background: var(--toc-accent); padding-bottom: 16px; }
.toc-style-boxed .ultrakit-toc-title, .toc-style-boxed .ultrakit-toc-icon, .toc-style-boxed .ultrakit-toc-pct { color: #ffffff; }
.toc-style-boxed .ultrakit-toc-toggle { background: rgba(255,255,255,0.2); color: #ffffff !important; }
.toc-style-boxed .ultrakit-toc-bar { background: color-mix(in srgb, var(--toc-accent) 15%, #ffffff); }
.toc-style-boxed .ultrakit-toc-bar span { background: var(--toc-accent); }

/* ---------- Style: Gradient header ---------- */
.toc-style-gradient { background: #ffffff; box-shadow: 0 14px 44px color-mix(in srgb, var(--toc-accent) 22%, transparent); }
.toc-style-gradient .ultrakit-toc-head { background: linear-gradient(135deg, var(--toc-accent), var(--toc-accent2)); padding-bottom: 18px; }
.toc-style-gradient .ultrakit-toc-title, .toc-style-gradient .ultrakit-toc-icon, .toc-style-gradient .ultrakit-toc-pct { color: #ffffff; }
.toc-style-gradient .ultrakit-toc-toggle { background: rgba(255,255,255,0.22); color: #ffffff !important; }
.toc-style-gradient .ultrakit-toc-bar { background: rgba(0,0,0,0.06); }

/* ---------- Style: Dark card ---------- */
.toc-style-dark { --toc-text: #c9c9dc; --toc-title: #ffffff; --toc-line: rgba(255,255,255,0.14); background: #1a1a2e; }
.toc-style-dark .ultrakit-toc-link:hover { background: rgba(255,255,255,0.06); }
.toc-style-dark .ultrakit-toc-link.is-active { color: #ffffff !important; background: linear-gradient(90deg, color-mix(in srgb, var(--toc-accent) 55%, transparent), transparent); }
.toc-style-dark .ultrakit-toc-num { color: var(--toc-accent2); }

/* ---------- Style: Pill links ---------- */
.toc-style-pills { background: #f6f5ff; }
.toc-style-pills .ultrakit-toc-link { padding: 8px 16px; border-radius: 50px; margin-bottom: 4px; background: #ffffff; box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
.toc-style-pills .ultrakit-toc-link:hover { transform: translateX(4px); }
.toc-style-pills .ultrakit-toc-link.is-active { background: var(--toc-accent); color: #ffffff !important; box-shadow: 0 8px 18px color-mix(in srgb, var(--toc-accent) 35%, transparent); }
.toc-style-pills .ultrakit-toc-link.is-active .ultrakit-toc-num { color: #ffffff; }
.toc-style-pills .ultrakit-toc-link::before { display: none; }

@media (max-width: 767px) { .ultrakit-toc-wrapper.toc-sticky { position: relative; top: auto; } }
@media (prefers-reduced-motion: reduce) { .ultrakit-toc-bar span, .ultrakit-toc-body { transition: none; } }