.page--algorithm_animator_home,
.page--algorithm_animator_kmp,
.page--algorithm_animator_dfs_cycle,
.page--algorithm_animator_knapsack_01,
html.page--algorithm_animator_home body,
html.page--algorithm_animator_kmp body,
html.page--algorithm_animator_dfs_cycle body,
html.page--algorithm_animator_knapsack_01 body,
html.page--algorithm_animator_home .slideout-panel,
html.page--algorithm_animator_kmp .slideout-panel,
html.page--algorithm_animator_dfs_cycle .slideout-panel,
html.page--algorithm_animator_knapsack_01 .slideout-panel,
html.page--algorithm_animator_home .main,
html.page--algorithm_animator_kmp .main,
html.page--algorithm_animator_dfs_cycle .main,
html.page--algorithm_animator_knapsack_01 .main {
  background-color: #0c0c11 !important;
}

html.page--algorithm_animator_home .main,
html.page--algorithm_animator_kmp .main,
html.page--algorithm_animator_dfs_cycle .main,
html.page--algorithm_animator_knapsack_01 .main {
  background-image:
    radial-gradient(900px 480px at 88% 4%, rgba(109, 67, 190, .16), transparent 62%),
    radial-gradient(760px 420px at 5% 88%, rgba(12, 116, 101, .1), transparent 68%) !important;
}

.aa-page {
  --aa-bg: #101014;
  --aa-panel: #19191f;
  --aa-panel-soft: #202028;
  --aa-line: rgba(255, 255, 255, 0.1);
  --aa-text: #f7f5ff;
  --aa-muted: #aaa6b5;
  --aa-purple: #8b5cf6;
  --aa-purple-light: #c4b5fd;
  --aa-yellow: #fbbf24;
  --aa-blue: #38bdf8;
  --aa-green: #34d399;
  width: min(1680px, 98vw);
  max-width: none;
  margin: 0 auto;
  padding: 28px 0 52px;
  color: var(--aa-text);
}

.aa-page *, .aa-page *::before, .aa-page *::after { box-sizing: border-box; }

.aa-subnav { display: flex; width: max-content; max-width: 100%; margin: 0 0 14px; padding: 5px; overflow-x: auto; border: 1px solid var(--aa-line); border-radius: 12px; background: rgba(25,25,31,.92); }
.aa-subnav__inner { display: flex; min-width: max-content; gap: 6px; align-items: center; }
.aa-subnav a { padding: 7px 12px; border-radius: 8px; color: var(--aa-muted); font-size: 12px; font-weight: 700; text-align: center; white-space: nowrap; }
.aa-subnav a:hover { color: #fff; }
.aa-subnav a.is-active { background: var(--aa-purple); color: #fff; }

.aa-hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 220px;
  margin-bottom: 18px;
  padding: 42px clamp(24px, 5vw, 62px);
  overflow: hidden;
  border-radius: 24px;
  background:
    radial-gradient(circle at 78% 30%, rgba(139, 92, 246, .32), transparent 25%),
    linear-gradient(125deg, #0d0d12, #1c1430 65%, #111117);
  box-shadow: 0 26px 70px rgba(19, 12, 35, .28);
}

.aa-hero::after {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 28px 28px;
}

.aa-eyebrow { margin: 0 0 9px; color: var(--aa-purple-light); font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.aa-hero h1 { position: relative; z-index: 1; max-width: 680px; margin: 0; color: #fff; font-size: clamp(30px, 4.6vw, 54px); line-height: 1.08; }
.aa-hero__lead { position: relative; z-index: 1; max-width: 650px; margin: 16px 0 0; color: #bcb8c8; font-size: 17px; }
.aa-hero__mark { position: relative; z-index: 1; display: flex; gap: 8px; margin-left: 24px; }
.aa-hero__mark span { display: grid; width: 58px; height: 72px; place-items: center; border: 1px solid rgba(255,255,255,.14); border-radius: 14px; background: rgba(255,255,255,.06); color: white; font: 800 28px/1 ui-monospace, monospace; transform: translateY(var(--shift, 0)); }
.aa-hero__mark span:nth-child(2) { --shift: 15px; }
.aa-hero__mark span:nth-child(3) { --shift: -7px; background: var(--aa-purple); }

.aa-home__hero { min-height: 290px; }
.aa-library { padding: 26px 0 8px; }
.aa-library__head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 20px; padding: 0 6px; }
.aa-library__head h2 { margin: 0; color: #fff; font-size: clamp(24px, 3vw, 34px); }
.aa-library__count { color: var(--aa-muted); font-size: 13px; white-space: nowrap; }
.aa-algorithm-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.aa-algorithm-card { position: relative; min-height: 280px; padding: 28px; overflow: hidden; border: 1px solid var(--aa-line); border-radius: 20px; background: linear-gradient(145deg, #1a1920, #141319); box-shadow: 0 18px 48px rgba(0,0,0,.16); color: var(--aa-text); transition: transform .2s, border-color .2s, box-shadow .2s; }
.aa-algorithm-card::after { position: absolute; right: -70px; bottom: -90px; width: 240px; height: 240px; border-radius: 50%; background: rgba(139,92,246,.12); content: ""; }
.aa-algorithm-card--graph::after { background: rgba(56,189,248,.1); }
.aa-algorithm-card--dp::after { background: rgba(52,211,153,.1); }
.aa-algorithm-card:hover { border-color: rgba(139,92,246,.65); box-shadow: 0 24px 58px rgba(0,0,0,.25); color: #fff; transform: translateY(-3px); }
.aa-algorithm-card h3 { margin: 16px 0 8px; color: #fff; font-size: 25px; }
.aa-algorithm-card p { max-width: 560px; margin: 0; color: var(--aa-muted); line-height: 1.65; }
.aa-algorithm-card__icon { position: absolute; top: 24px; right: 26px; color: rgba(196,181,253,.2); font: 900 56px/1 ui-monospace, monospace; letter-spacing: -.08em; }
.aa-algorithm-card__action { position: absolute; bottom: 27px; left: 28px; z-index: 1; color: var(--aa-purple-light); font-size: 13px; font-weight: 800; }

.aa-card { border: 1px solid var(--aa-line); border-radius: 18px; background: var(--aa-panel); box-shadow: 0 18px 48px rgba(0,0,0,.16); }
.aa-intro { display: grid; grid-template-columns: minmax(260px, .75fr) minmax(420px, 1.25fr); gap: 34px; align-items: center; margin-bottom: 18px; padding: 24px 28px; }
.aa-intro h2 { margin: 9px 0 5px; color: #fff; font-size: 23px; }
.aa-intro p { margin: 0; color: var(--aa-muted); }
.aa-pill { display: inline-flex; padding: 3px 9px; border: 1px solid rgba(139,92,246,.45); border-radius: 999px; color: var(--aa-purple-light); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.aa-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; align-items: end; }
.aa-form label { display: grid; gap: 5px; color: var(--aa-muted); font-size: 12px; }
.aa-form input { min-width: 0; height: 41px; padding: 0 12px; border: 1px solid var(--aa-line); border-radius: 10px; outline: none; background: #101014; color: #fff; font: 600 15px/1 ui-monospace, monospace; }
.aa-form input:focus { border-color: var(--aa-purple); box-shadow: 0 0 0 3px rgba(139,92,246,.16); }
.aa-generate { height: 41px; margin: 0; white-space: nowrap; }
.aa-form__hint, .aa-form__error { grid-column: 1 / -1; font-size: 12px; }
.aa-form__error { min-height: 18px; color: #fda4af !important; }

.aa-hero--dfs { background: radial-gradient(circle at 80% 34%, rgba(56,189,248,.2), transparent 25%), linear-gradient(125deg, #0d0d12, #15172b 60%, #111117); }
.aa-dfs-hero-mark { position: relative; z-index: 1; width: 210px; height: 120px; margin-left: 30px; }
.aa-dfs-hero-mark::before, .aa-dfs-hero-mark::after { position: absolute; height: 2px; background: rgba(255,255,255,.22); content: ""; transform-origin: left center; }
.aa-dfs-hero-mark::before { top: 28px; left: 45px; width: 118px; transform: rotate(22deg); }
.aa-dfs-hero-mark::after { top: 79px; left: 53px; width: 106px; transform: rotate(-17deg); }
.aa-dfs-hero-mark i { position: absolute; z-index: 1; width: 34px; height: 34px; border: 3px solid #111117; border-radius: 50%; background: #f8fafc; box-shadow: 0 0 0 2px rgba(255,255,255,.18); }
.aa-dfs-hero-mark i:nth-child(1) { top: 8px; left: 28px; }
.aa-dfs-hero-mark i:nth-child(2) { top: 42px; right: 22px; background: #6b7280; }
.aa-dfs-hero-mark i:nth-child(3) { bottom: 4px; left: 38px; background: #090a0f; }
.aa-dfs-hero-mark i:nth-child(4) { top: 46px; left: 90px; width: 28px; height: 28px; background: #fb7185; }
.aa-dfs-intro { display: grid; grid-template-columns: minmax(280px, .72fr) minmax(540px, 1.28fr); gap: 34px; align-items: start; margin-bottom: 18px; padding: 24px 28px; }
.aa-dfs-intro h2 { margin: 9px 0 5px; color: #fff; font-size: 23px; }
.aa-dfs-intro p { margin: 0; color: var(--aa-muted); }
.aa-dfs-form { display: grid; min-width: 0; gap: 13px; padding: 16px; border: 1px solid rgba(255,255,255,.075); border-radius: 14px; background: rgba(12,12,17,.48); box-shadow: inset 0 1px rgba(255,255,255,.025); }
.aa-dfs-form label { display: grid; gap: 5px; color: var(--aa-muted); font-size: 12px; }
.aa-dfs-form__topline { display: flex; align-items: end; justify-content: space-between; gap: 18px; }
.aa-dfs-form__nodes { width: max-content; }
.aa-node-stepper { display: grid; grid-template-columns: 38px 54px 38px; height: 42px; overflow: hidden; border: 1px solid var(--aa-line); border-radius: 10px; background: #101014; transition: border-color .16s, box-shadow .16s; }
.aa-node-stepper:focus-within { border-color: var(--aa-purple); box-shadow: 0 0 0 3px rgba(139,92,246,.16); }
.aa-node-stepper button { display: grid; padding: 0; place-items: center; border: 0; background: rgba(255,255,255,.025); color: var(--aa-muted); font: 700 19px/1 ui-sans-serif, sans-serif; cursor: pointer; transition: background .16s, color .16s; }
.aa-node-stepper button:first-child { border-right: 1px solid var(--aa-line); }
.aa-node-stepper button:last-child { border-left: 1px solid var(--aa-line); }
.aa-node-stepper button:hover { background: rgba(139,92,246,.13); color: #fff; }
.aa-node-stepper button:focus-visible { position: relative; z-index: 1; outline: 2px solid var(--aa-purple-light); outline-offset: -3px; }
.aa-node-stepper input { width: 54px; min-width: 0; padding: 0; border: 0; outline: 0; background: transparent; color: #fff; font: 700 15px/1 ui-monospace, monospace; text-align: center; appearance: textfield; }
.aa-node-stepper input::-webkit-inner-spin-button, .aa-node-stepper input::-webkit-outer-spin-button { margin: 0; appearance: none; }
.aa-dfs-form__edge-count { align-self: center; padding: 5px 9px; border: 1px solid rgba(139,92,246,.22); border-radius: 999px; background: rgba(139,92,246,.08); color: var(--aa-purple-light); font-size: 11px; font-weight: 750; white-space: nowrap; }
.aa-dfs-form__edge-count.is-over { border-color: rgba(251,113,133,.36); background: rgba(251,113,133,.09); color: #fda4af; }
.aa-dfs-form textarea { width: 100%; min-width: 0; height: 118px; padding: 11px 13px; border: 1px solid var(--aa-line); border-radius: 11px; outline: none; resize: vertical; background: #101014; color: #fff; caret-color: var(--aa-purple-light); font: 600 14px/1.55 ui-monospace, monospace; scrollbar-color: #5d5967 #15151b; scrollbar-width: thin; transition: border-color .16s, box-shadow .16s; }
.aa-dfs-form textarea::-webkit-scrollbar { width: 8px; }
.aa-dfs-form textarea::-webkit-scrollbar-track { border-radius: 0 11px 11px 0; background: #15151b; }
.aa-dfs-form textarea::-webkit-scrollbar-thumb { border: 2px solid #15151b; border-radius: 999px; background: #5d5967; }
.aa-dfs-form textarea:focus { border-color: var(--aa-purple); box-shadow: 0 0 0 3px rgba(139,92,246,.16); }
.aa-dfs-form__footer { display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.aa-dfs-form__messages { display: grid; min-width: 0; flex: 1; gap: 3px; }
.aa-dfs-form .aa-form__hint { font-size: 11px; line-height: 1.45; }
.aa-dfs-form .aa-form__error { min-height: 16px; font-size: 11px; line-height: 1.4; }
.aa-dfs-form .aa-generate { min-width: 116px; height: 42px; margin: 0; border-color: var(--aa-purple) !important; background: var(--aa-purple) !important; color: #fff !important; box-shadow: 0 8px 20px rgba(139,92,246,.2); }
.aa-dfs-form .aa-generate:hover { border-color: #7c3aed !important; background: #7c3aed !important; }

.aa-hero--knapsack { background: radial-gradient(circle at 80% 34%, rgba(52,211,153,.18), transparent 25%), linear-gradient(125deg, #0d0d12, #13251f 60%, #111117); }
.aa-knapsack-hero-mark { position: relative; z-index: 1; display: flex; gap: 12px; align-items: center; margin-left: 30px; color: #6ee7b7; }
.aa-knapsack-hero-mark span { display: grid; width: 78px; height: 78px; place-items: center; border: 1px solid rgba(110,231,183,.32); border-radius: 18px; background: rgba(52,211,153,.1); color: #ecfdf5; font: 850 23px/1 ui-monospace, monospace; }
.aa-knapsack-hero-mark span:last-child { width: 66px; height: 66px; background: rgba(139,92,246,.2); color: var(--aa-purple-light); }
.aa-knapsack-hero-mark i { color: #777381; font: 800 25px/1 ui-monospace, monospace; }
.aa-knapsack-intro { display: grid; grid-template-columns: minmax(280px, .67fr) minmax(570px, 1.33fr); gap: 34px; align-items: start; margin-bottom: 18px; padding: 24px 28px; }
.aa-knapsack-intro__copy h2 { margin: 9px 0 5px; color: #fff; font-size: 23px; }
.aa-knapsack-intro__copy p { margin: 0; color: var(--aa-muted); }
.aa-knapsack-form { display: grid; min-width: 0; gap: 10px; padding: 16px; border: 1px solid rgba(255,255,255,.075); border-radius: 14px; background: rgba(12,12,17,.48); box-shadow: inset 0 1px rgba(255,255,255,.025); }
.aa-knapsack-form label { display: grid; width: max-content; gap: 5px; color: var(--aa-muted); font-size: 12px; }
.aa-knapsack-form__topline { display: flex; align-items: end; justify-content: space-between; gap: 18px; }
.aa-knapsack-items-head, .aa-knapsack-item-row { display: grid; grid-template-columns: 38px minmax(90px, 1fr) minmax(90px, 1fr) 36px; gap: 8px; align-items: center; }
.aa-knapsack-items-head { padding: 0 1px; color: #777381; font-size: 10px; font-weight: 800; letter-spacing: .08em; text-align: center; text-transform: uppercase; }
.aa-knapsack-items { display: grid; gap: 7px; }
.aa-knapsack-item-row { padding: 7px; border: 1px solid rgba(255,255,255,.065); border-radius: 11px; background: #141419; }
.aa-knapsack-item-index { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 8px; background: rgba(139,92,246,.13); color: var(--aa-purple-light); font: 800 12px/1 ui-monospace, monospace; }
.aa-knapsack-item-row input { width: 100%; min-width: 0; height: 36px; padding: 0 10px; border: 1px solid var(--aa-line); border-radius: 9px; outline: 0; appearance: textfield; background: #0f0f14; color: #fff; font: 700 13px/1 ui-monospace, monospace; text-align: center; }
.aa-knapsack-item-row input::-webkit-inner-spin-button, .aa-knapsack-item-row input::-webkit-outer-spin-button { margin: 0; appearance: none; }
.aa-knapsack-item-row input:focus { border-color: var(--aa-purple); box-shadow: 0 0 0 3px rgba(139,92,246,.13); }
.aa-knapsack-remove { display: grid; width: 30px; height: 30px; padding: 0; place-items: center; border: 1px solid transparent; border-radius: 8px; background: transparent; color: #777381; font-size: 18px; cursor: pointer; }
.aa-knapsack-remove:hover { border-color: rgba(251,113,133,.3); background: rgba(251,113,133,.08); color: #fda4af; }
.aa-knapsack-remove:disabled { opacity: .25; cursor: not-allowed; }
.aa-knapsack-form__footer { display: grid; grid-template-columns: auto minmax(180px, 1fr) auto; gap: 14px; align-items: end; }
.aa-knapsack-add { height: 38px; padding: 0 12px; border: 1px dashed rgba(196,181,253,.35); border-radius: 9px; background: rgba(139,92,246,.06); color: var(--aa-purple-light); font-size: 11px; font-weight: 750; cursor: pointer; }
.aa-knapsack-add:hover { border-style: solid; background: rgba(139,92,246,.12); }
.aa-knapsack-add:disabled { opacity: .35; cursor: not-allowed; }
.aa-knapsack-form__messages { display: grid; gap: 2px; }
.aa-knapsack-form .aa-form__hint { margin: 0; color: var(--aa-muted); font-size: 10px; line-height: 1.45; }
.aa-knapsack-form .aa-form__error { min-height: 14px; margin: 0; font-size: 10px; line-height: 1.4; }
.aa-knapsack-form .aa-generate { min-width: 116px; height: 40px; margin: 0; border-color: var(--aa-purple) !important; background: var(--aa-purple) !important; color: #fff !important; box-shadow: 0 8px 20px rgba(139,92,246,.2); }
.aa-knapsack-form .aa-generate:hover { border-color: #7c3aed !important; background: #7c3aed !important; }

/* Shared input shell: algorithm-specific controls live inside the same hierarchy. */
.aa-input-section { display: grid; grid-template-columns: minmax(280px, .7fr) minmax(560px, 1.3fr); gap: 34px; align-items: start; margin-bottom: 18px; padding: 24px 28px; }
.aa-input-section__copy h2 { margin: 9px 0 5px; color: #fff; font-size: 23px; }
.aa-input-section__copy p { margin: 0; color: var(--aa-muted); }
.aa-input-panel { display: grid; grid-template-columns: 1fr; min-width: 0; gap: 12px; align-items: initial; padding: 16px; border: 1px solid rgba(255,255,255,.075); border-radius: 14px; background: rgba(12,12,17,.48); box-shadow: inset 0 1px rgba(255,255,255,.025); }
.aa-input-panel__topline { display: flex; align-items: end; justify-content: space-between; gap: 18px; }
.aa-input-panel__title { color: var(--aa-muted); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.aa-input-panel__body { display: grid; min-width: 0; gap: 9px; }
.aa-input-panel__footer { display: grid; grid-template-columns: auto minmax(180px, 1fr) auto; gap: 14px; align-items: end; }
.aa-input-panel__footer--simple { grid-template-columns: minmax(180px, 1fr) auto; }
.aa-input-panel__messages { display: grid; min-width: 0; gap: 2px; }
.aa-input-panel .aa-form__hint { grid-column: auto; margin: 0; color: var(--aa-muted); font-size: 10px; line-height: 1.45; }
.aa-input-panel .aa-form__error { grid-column: auto; min-height: 14px; margin: 0; font-size: 10px; line-height: 1.4; }
.aa-input-status { align-self: center; padding: 5px 9px; border: 1px solid rgba(139,92,246,.22); border-radius: 999px; background: rgba(139,92,246,.08); color: var(--aa-purple-light); font-size: 11px; font-weight: 750; white-space: nowrap; }
.aa-input-status.is-over, .aa-input-status.is-invalid { border-color: rgba(251,113,133,.36); background: rgba(251,113,133,.09); color: #fda4af; }
.aa-input-panel .aa-generate { min-width: 116px; height: 40px; margin: 0; border-color: var(--aa-purple) !important; background: var(--aa-purple) !important; color: #fff !important; box-shadow: 0 8px 20px rgba(139,92,246,.2); }
.aa-input-panel .aa-generate:hover { border-color: #7c3aed !important; background: #7c3aed !important; }
.aa-input-panel .aa-generate:disabled { border-color: #45414f !important; background: #302d37 !important; box-shadow: none; color: #777381 !important; cursor: not-allowed; }
.aa-kmp-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.aa-kmp-fields label { display: grid; gap: 5px; color: var(--aa-muted); font-size: 12px; }
.aa-kmp-fields input { width: 100%; min-width: 0; height: 41px; padding: 0 12px; border: 1px solid var(--aa-line); border-radius: 10px; outline: none; background: #101014; color: #fff; font: 600 15px/1 ui-monospace, monospace; }
.aa-kmp-fields input:focus { border-color: var(--aa-purple); box-shadow: 0 0 0 3px rgba(139,92,246,.16); }
.aa-dfs-fields { grid-template-columns: 150px minmax(0, 1fr); align-items: start; }
.aa-dfs-fields .aa-dfs-form__edges { min-width: 0; }
.aa-knapsack-fields { grid-template-columns: 150px minmax(0, 1fr); align-items: start; }
.aa-knapsack-capacity-field { align-self: start; }
.aa-knapsack-items-field { display: grid; min-width: 0; gap: 7px; }

.aa-workspace { display: grid; grid-template-columns: minmax(0, 1.8fr) minmax(460px, .72fr); gap: 18px; align-items: start; }
.aa-main, .aa-sidebar { display: grid; align-content: start; gap: 18px; }
.aa-stage-card { overflow: hidden; }
.aa-stage__head { display: flex; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--aa-line); color: var(--aa-muted); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.aa-phase { color: var(--aa-purple-light); }
.aa-stage { display: grid; min-height: 430px; padding: 34px 24px; place-items: center; overflow-x: auto; background: radial-gradient(circle at 50% 42%, rgba(139,92,246,.09), transparent 46%); }
.aa-grid { display: grid; gap: 7px; width: max-content; max-width: 100%; }
.aa-cell { display: grid; width: clamp(34px, 4.2vw, 52px); aspect-ratio: 1; place-items: center; border: 1px solid #484851; border-radius: 9px; background: var(--aa-panel-soft); color: white; font: 750 16px/1 ui-monospace, monospace; transition: transform .22s, border-color .22s, background .22s; }
.aa-cell--label { width: 54px; border-color: transparent; background: transparent; color: var(--aa-muted); font-size: 12px; }
.aa-cell--index { height: 22px; aspect-ratio: auto; color: #777381; font-size: 11px; }
.aa-cell--empty { color: #55515e; }
.aa-pointer { z-index: 2; display: flex; align-items: center; justify-self: center; min-width: max-content; color: white; font: 800 12px/1 ui-monospace, monospace; text-align: center; }
.aa-pointer--down { align-self: end; flex-direction: column; margin-bottom: -2px; }
.aa-pointer--up { align-self: start; flex-direction: column; margin-top: -2px; }
.aa-pointer__label { padding: 1px 6px; border: 1px solid currentColor; border-radius: 999px; background: #111117; }
.aa-pointer__arrow { height: 24px; font-size: 27px; line-height: 24px; text-shadow: 0 0 10px currentColor; }
.aa-pointer--i { color: var(--aa-yellow); }
.aa-pointer--j { color: var(--aa-purple-light); }
.aa-range { position: relative; align-self: center; height: 29px; color: currentColor; font: 800 10px/1 ui-monospace, monospace; text-align: center; }
.aa-range::before { position: absolute; right: 0; left: 0; height: 9px; content: ""; border-right: 2px solid currentColor; border-left: 2px solid currentColor; }
.aa-range span { position: absolute; right: 0; left: 0; white-space: nowrap; }
.aa-range--before::before { bottom: 0; border-top: 2px solid currentColor; }
.aa-range--before span { top: 0; }
.aa-range--after::before { top: 0; border-bottom: 2px solid currentColor; }
.aa-range--after span { bottom: 0; }
.aa-range--prefix { color: var(--aa-purple-light); }
.aa-range--suffix { color: #67e8f9; }
.aa-range--empty { opacity: .72; }
.aa-range--empty::before { height: 1px; border: 0; border-top: 1px dashed currentColor; }
.aa-state-compare { border-color: #fcd34d; background: #7c4a0a; transform: translateY(-4px); }
.aa-state-current { border-color: var(--aa-purple-light); background: #5b35a8; transform: translateY(-4px); }
.aa-state-candidate { border-color: var(--aa-yellow); background: #513810; }
.aa-state-visited { border-color: #7dd3fc; background: #075985; }
.aa-state-path { border-color: #6ee7b7; background: #06644c; }
.aa-caption { min-height: 70px; padding: 20px 22px; color: #e8e5f0; font-size: 16px; }
.aa-caption.is-done { border-color: rgba(52,211,153,.65); }
.aa-caption.is-done.has-cycle { border-color: rgba(251,113,133,.78); box-shadow: inset 3px 0 #fb7185; }
.aa-panel { padding: 18px; }
.aa-code-panel { display: flex; max-height: 610px; flex-direction: column; overflow: hidden; }
.aa-panel h3 { margin: 0; color: var(--aa-muted); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.aa-panel__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 13px; }
.aa-language-switch { display: inline-flex; padding: 3px; border: 1px solid var(--aa-line); border-radius: 9px; background: #101014; }
.aa-language-switch button { padding: 4px 8px; border: 0; border-radius: 6px; background: transparent; color: var(--aa-muted); font-size: 11px; cursor: pointer; }
.aa-language-switch button.is-active { background: var(--aa-purple); color: #fff; }
.aa-code { display: block; min-height: 0; margin: 0 -6px 0 0; padding: 2px 10px 2px 38px; overflow: auto; color: #77737f; counter-reset: aa-code-step; scrollbar-color: #4e4267 transparent; scrollbar-width: thin; }
.aa-code li { position: relative; width: max-content; min-width: 100%; padding: 4px 10px; border-left: 2px solid transparent; border-radius: 0 7px 7px 0; list-style: none; counter-increment: aa-code-step; }
.aa-code li::before { position: absolute; top: 5px; left: -29px; width: 20px; content: counter(aa-code-step); color: #6f6a79; font: 11px/1.5 ui-monospace, monospace; text-align: right; }
.aa-page .aa-code code { display: block; padding: 0; border: 0; border-radius: 0; background: transparent !important; box-shadow: none; color: #d4d0dd; white-space: pre; font-size: 12px; line-height: 1.5; }
.aa-code li.is-active { border-left-color: var(--aa-purple); background: rgba(139,92,246,.2); color: var(--aa-purple-light); }
.aa-code li.is-active::before { color: var(--aa-purple-light); font-weight: 800; }
.aa-page .aa-code li.is-active code { background: transparent !important; color: #fff; }
.aa-variables { display: flex; flex-wrap: wrap; gap: 8px; }
.aa-variable { padding: 6px 9px; border: 1px solid var(--aa-line); border-radius: 999px; background: #101014; color: #d9d5e2; font: 12px/1.2 ui-monospace, monospace; }
.aa-stack { display: flex; min-height: 34px; flex-wrap: wrap; gap: 7px; align-items: center; margin-top: 12px; }
.aa-stack span:not(.aa-stack__empty) { display: grid; width: 31px; height: 31px; place-items: center; border: 1px solid #64616b; border-radius: 9px; background: #27272f; color: #fff; font: 800 12px/1 ui-monospace, monospace; }
.aa-stack span.is-top { border-color: var(--aa-purple-light); background: #5b35a8; }
.aa-stack i { color: #6f6a79; font-style: normal; }
.aa-stack__empty { color: #777381; font-size: 12px; }

.aa-workspace--dfs { grid-template-columns: minmax(0, 1.65fr) minmax(440px, .75fr); }
.aa-graph-stage { min-height: 520px; padding: 12px 18px; overflow: hidden; }
.aa-graph { display: block; width: 100%; height: min(520px, 58vw); min-height: 400px; }
.aa-graph-edge { fill: none; stroke: #777381; stroke-width: 2; opacity: .7; transition: stroke .2s, stroke-width .2s, opacity .2s; }
.aa-graph-edge.is-active { stroke: var(--aa-yellow); stroke-width: 4; opacity: 1; filter: drop-shadow(0 0 5px rgba(251,191,36,.55)); }
.aa-graph-edge.is-cycle { stroke: #fb7185; stroke-width: 5; opacity: 1; filter: drop-shadow(0 0 6px rgba(251,113,133,.7)); }
.aa-graph-node circle { stroke-width: 2.5; transition: fill .22s, stroke .22s, filter .22s; }
.aa-graph-node text { font: 850 14px/1 ui-monospace, monospace; pointer-events: none; }
.aa-graph-node.is-white circle { fill: #f8fafc; stroke: #cbd5e1; }
.aa-graph-node.is-white text { fill: #15151b; }
.aa-graph-node.is-gray circle { fill: #6b7280; stroke: #c4b5fd; }
.aa-graph-node.is-gray text, .aa-graph-node.is-black text { fill: #fff; }
.aa-graph-node.is-black circle { fill: #090a0f; stroke: #4b5563; }
.aa-graph-node.is-active circle { stroke: var(--aa-yellow); filter: drop-shadow(0 0 9px rgba(251,191,36,.75)); }
.aa-graph-node.is-cycle circle { fill: #9f1239; stroke: #fda4af; filter: drop-shadow(0 0 10px rgba(251,113,133,.75)); }

.aa-workspace--knapsack { grid-template-columns: minmax(0, 1.75fr) minmax(430px, .65fr); }
.aa-knapsack-stage-head { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; }
.aa-knapsack-stage-head .aa-phase { justify-self: end; }
.aa-view-switch { display: inline-flex; padding: 3px; border: 1px solid var(--aa-line); border-radius: 9px; background: #101014; letter-spacing: 0; text-transform: none; }
.aa-view-switch button { padding: 4px 9px; border: 0; border-radius: 6px; background: transparent; color: var(--aa-muted); font-size: 10px; font-weight: 700; cursor: pointer; }
.aa-view-switch button.is-active { background: var(--aa-purple); color: #fff; }
.aa-knapsack-stage { display: block; min-height: 590px; padding: 18px; overflow-x: auto; }
.aa-knapsack-current-item { width: max-content; margin: 0 auto 13px; padding: 6px 12px; border: 1px solid rgba(139,92,246,.25); border-radius: 999px; background: rgba(139,92,246,.08); color: var(--aa-purple-light); font: 750 11px/1.2 ui-monospace, monospace; }
.aa-knapsack-representation { min-width: 620px; margin-bottom: 14px; padding: 13px; border: 1px solid rgba(255,255,255,.075); border-radius: 13px; background: rgba(14,14,19,.66); }
.aa-knapsack-representation__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 9px; color: var(--aa-muted); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; }
.aa-knapsack-representation__head strong { color: #d8d4df; font-size: 11px; }
.aa-knapsack-representation__head span { color: #777381; font: 11px/1 ui-monospace, monospace; text-transform: none; }
.aa-dp-table-wrap { overflow-x: auto; scrollbar-color: #4e4267 transparent; scrollbar-width: thin; }
.aa-dp-table, .aa-f-array { display: grid; gap: 4px; min-width: max-content; }
.aa-dp-cell, .aa-f-cell { display: grid; min-width: 34px; height: 31px; place-items: center; border: 1px solid #3c3c46; border-radius: 7px; background: #1d1d24; color: #e8e5ef; font: 750 11px/1 ui-monospace, monospace; transition: border-color .18s, background .18s, color .18s, transform .18s, opacity .18s; }
.aa-dp-cell--header, .aa-f-cell--header { height: 24px; border-color: transparent; background: transparent; color: #777381; font-size: 10px; }
.aa-dp-cell--row-label, .aa-f-cell--label { border-color: transparent; background: transparent; color: #918c9b; font-size: 10px; }
.aa-dp-cell.is-pending { color: #55515e; opacity: .46; }
.aa-dp-cell.is-unknown { color: #66616f; background: #19191f; }
.aa-dp-cell.is-active-row { border-color: rgba(139,92,246,.28); }
.aa-dp-cell.is-processed, .aa-f-cell.is-processed { border-color: rgba(56,189,248,.42); background: rgba(7,89,133,.42); }
.aa-dp-cell.is-current, .aa-f-cell.is-current { z-index: 1; border-color: #fcd34d; background: #6a420b; color: #fff; transform: translateY(-2px); }
.aa-dp-cell.is-skip-source { border-color: #7dd3fc; background: #075985; color: #fff; }
.aa-dp-cell.is-take-source, .aa-f-cell.is-take-source { border-color: var(--aa-purple-light); background: #5b35a8; color: #fff; }
.aa-dp-cell.is-copied, .aa-f-cell.is-copied { z-index: 1; border-color: #7dd3fc; background: #075985; color: #fff; transform: translateY(-2px); }
.aa-dp-cell.is-written, .aa-f-cell.is-written { z-index: 1; border-color: #6ee7b7; background: #06644c; color: #fff; transform: translateY(-2px); }
.aa-dp-cell.is-row-done, .aa-f-cell.is-row-done { border-color: rgba(52,211,153,.43); background: rgba(6,100,76,.38); }
.aa-f-layer-hint { margin: 9px 0 0; color: #777381; font-size: 10px; text-align: center; }
.aa-knapsack-formula { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); min-width: 620px; gap: 9px; }
.aa-knapsack-formula__card { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 8px; align-items: center; min-height: 50px; padding: 9px 11px; border: 1px solid var(--aa-line); border-radius: 11px; background: #15151b; }
.aa-knapsack-formula__card span { color: var(--aa-muted); font-size: 10px; font-weight: 750; }
.aa-knapsack-formula__card code { overflow: hidden; border: 0; background: transparent; color: #c9c5d1; font: 10px/1.3 ui-monospace, monospace; text-overflow: ellipsis; white-space: nowrap; }
.aa-knapsack-formula__card strong { color: #fff; font: 850 15px/1 ui-monospace, monospace; }
.aa-knapsack-formula__card--skip { border-color: rgba(125,211,252,.28); }
.aa-knapsack-formula__card--take { border-color: rgba(196,181,253,.3); }
.aa-knapsack-formula__card--result { border-color: rgba(110,231,183,.3); }
.aa-knapsack-formula__message { grid-column: 1 / -1; padding: 12px; border: 1px dashed rgba(110,231,183,.24); border-radius: 11px; color: #a7f3d0; font-size: 11px; text-align: center; }
.aa-dot--skip { background: var(--aa-blue); }
.aa-dot--take { background: var(--aa-purple-light); }

.aa-controls { display: grid; grid-template-columns: auto minmax(160px, 1fr) auto; gap: 16px; align-items: center; margin-top: 0; padding: 14px 16px; }
.aa-control-buttons { display: flex; gap: 8px; }
.aa-icon-button { display: grid; width: 40px; height: 40px; place-items: center; border: 1px solid var(--aa-line); border-radius: 10px; background: var(--aa-panel-soft); color: white; cursor: pointer; }
.aa-icon-button:hover, .aa-icon-button:focus-visible { border-color: var(--aa-purple); outline: none; }
.aa-icon-button--primary { border-color: var(--aa-purple); background: var(--aa-purple); }
.aa-timeline-label input { width: 100%; accent-color: var(--aa-purple); }
.aa-control-meta { display: flex; align-items: center; gap: 12px; color: var(--aa-muted); white-space: nowrap; }
.aa-control-meta select { padding: 6px 8px; border: 1px solid var(--aa-line); border-radius: 8px; background: var(--aa-panel-soft); color: white; }
.aa-legend { display: flex; justify-content: center; gap: 18px; margin-top: 15px; color: #787480; font-size: 12px; }
.aa-dot { display: inline-block; width: 9px; height: 9px; margin-right: 5px; border-radius: 3px; }
.aa-dot--compare { background: var(--aa-yellow); }.aa-dot--current { background: var(--aa-purple); }.aa-dot--visited { background: var(--aa-blue); }.aa-dot--path { background: var(--aa-green); }
.aa-dot--white { border: 1px solid #aaa; background: #f8fafc; }.aa-dot--gray { background: #6b7280; }.aa-dot--black { border: 1px solid #555; background: #090a0f; }.aa-dot--back { background: #fb7185; }
.aa-visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (max-width: 1050px) {
  .aa-intro, .aa-dfs-intro, .aa-knapsack-intro, .aa-input-section, .aa-workspace { grid-template-columns: 1fr; }
  .aa-algorithm-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .aa-sidebar { grid-template-columns: 1fr 1fr; }
  .aa-workspace--dfs .aa-sidebar { grid-template-columns: 1fr 1fr; }
  .aa-workspace--dfs .aa-sidebar .aa-code-panel { grid-row: span 2; }
  .aa-code-panel { max-height: 520px; }
}

@media (max-width: 620px) {
  .aa-page { width: calc(100% - 14px); padding-top: 12px; }
  .aa-hero { min-height: 0; padding: 30px 22px; }
  .aa-hero__mark { display: none; }
  .aa-dfs-hero-mark { display: none; }
  .aa-knapsack-hero-mark { display: none; }
  .aa-intro { gap: 20px; padding: 20px; }
  .aa-dfs-intro { gap: 20px; padding: 20px; }
  .aa-knapsack-intro { gap: 20px; padding: 20px; }
  .aa-input-section { gap: 20px; padding: 20px; }
  .aa-form, .aa-dfs-form, .aa-sidebar, .aa-workspace--dfs .aa-sidebar, .aa-controls, .aa-algorithm-cards { grid-template-columns: 1fr; }
  .aa-dfs-form { padding: 14px; }
  .aa-dfs-form__footer { align-items: stretch; flex-direction: column; gap: 10px; }
  .aa-dfs-form .aa-generate { width: 100%; }
  .aa-knapsack-form { padding: 14px; }
  .aa-knapsack-form__footer { grid-template-columns: 1fr; }
  .aa-knapsack-form .aa-generate { width: 100%; }
  .aa-input-panel__footer, .aa-input-panel__footer--simple { grid-template-columns: 1fr; }
  .aa-input-panel .aa-generate { width: 100%; }
  .aa-kmp-fields, .aa-dfs-fields, .aa-knapsack-fields { grid-template-columns: 1fr; }
  .aa-knapsack-stage-head { grid-template-columns: 1fr auto; gap: 9px; }
  .aa-knapsack-stage-head .aa-phase { grid-column: 1 / -1; justify-self: start; }
  .aa-view-switch button { padding-inline: 7px; }
  .aa-knapsack-stage { padding: 12px; }
  .aa-workspace--dfs .aa-sidebar .aa-code-panel { grid-row: auto; }
  .aa-stage { min-height: 320px; padding: 25px 12px; }
  .aa-graph-stage { padding: 4px; }
  .aa-graph { height: 430px; min-height: 360px; }
  .aa-control-meta { justify-content: space-between; }
  .aa-legend { flex-wrap: wrap; }
  .aa-library__head { align-items: start; flex-direction: column; gap: 8px; }
}