/* ═══════════════════════════════════════════════════════════════
   CCA Foundations — Scenario 03 page styles
   ─────────────────────────────────────────────────────────────
   Extends cca.css. Scoped to this scenario only.
   Principal concern: the partition simulator (.part-*).
═══════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════════════════ */

.s3-hero {
    padding-top: 140px;
    padding-bottom: 120px;
    position: relative;
    overflow: hidden;
}

.s3-hero::after {
    /* Triple gradient — amber, teal, green — echoing the three
       subagents in the simulator below. */
    content: '';
    position: absolute;
    top: 16%;
    right: -8%;
    width: 680px;
    height: 680px;
    background:
        radial-gradient(circle at 30% 30%, rgba(212, 162, 76, 0.08), transparent 60%),
        radial-gradient(circle at 70% 40%, rgba(45, 156, 202, 0.07), transparent 60%),
        radial-gradient(circle at 50% 70%, rgba(124, 201, 163, 0.06), transparent 60%);
    filter: blur(60px);
    pointer-events: none;
    z-index: 0;
}

.s3-hero > * {
    position: relative;
    z-index: 1;
}

.s3-hero-eyebrow-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 48px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--cca-rule-soft);
}

.s3-hero-meta {
    font-family: var(--cca-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--cca-text-4);
}
.s3-hero-meta span { color: var(--cca-text-3); }

.s3-hero h1 {
    margin-bottom: 48px;
    max-width: 16ch;
}
.s3-hero h1 .s3-h1-sub {
    display: block;
    font-family: var(--cca-serif);
    font-size: clamp(24px, 3.2vw, 40px);
    font-weight: 300;
    line-height: 1.1;
    color: var(--cca-text-3);
    margin-top: 14px;
    letter-spacing: -0.01em;
    font-variation-settings: "opsz" 72, "SOFT" 40;
    text-wrap: balance;
}

.s3-hero .cca-lede {
    max-width: 48ch;
}

.s3-hero-tail {
    margin-top: 80px;
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--cca-text-4);
    font-family: var(--cca-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}
.s3-hero-tail-rule {
    flex: 1;
    height: 1px;
    max-width: 80px;
    background: var(--cca-rule);
}
.s3-hero-tail-arrow {
    font-family: var(--cca-serif);
    font-size: 18px;
    letter-spacing: normal;
    color: var(--cca-amber);
    animation: s3-nudge 2.2s ease-in-out infinite;
}
@keyframes s3-nudge {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(4px); }
}

/* ═══════════════════════════════════════════════════════════════
   SECTION HEADINGS
═══════════════════════════════════════════════════════════════ */

.s3-sec-head {
    margin-bottom: 48px;
}
.s3-sec-head .cca-eyebrow {
    margin-bottom: 20px;
}
.s3-sec-head h2 {
    max-width: 22ch;
}

/* ═══════════════════════════════════════════════════════════════
   THE PARTITION SIMULATOR
═══════════════════════════════════════════════════════════════ */

.part-sim {
    border: 1px solid var(--cca-rule);
    background: linear-gradient(180deg, var(--cca-ink-2) 0%, var(--cca-ink) 100%);
    padding: 40px clamp(24px, 4vw, 48px) 48px;
    position: relative;
    overflow: hidden;
}

/* Subtle grid backdrop */
.part-sim::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(42, 52, 72, 0.2) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(42, 52, 72, 0.2) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    opacity: 0.5;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
}

.part-sim > * {
    position: relative;
    z-index: 1;
}

/* ── Toolbar ─────────────────────────────────────────────── */
.part-toolbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    padding-bottom: 28px;
    margin-bottom: 32px;
    border-bottom: 1px dashed var(--cca-rule);
}
.part-toolbar-info .cca-eyebrow {
    margin-bottom: 14px;
}
.part-toolbar-desc {
    font-family: var(--cca-serif);
    font-size: 20px;
    line-height: 1.3;
    color: var(--cca-text);
    font-weight: 300;
    margin: 0;
    letter-spacing: -0.01em;
    font-variation-settings: "opsz" 48, "SOFT" 40;
    max-width: 36ch;
}

.part-run {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 16px 28px;
    background: var(--cca-amber);
    color: var(--cca-ink);
    border: none;
    font-family: var(--cca-mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    font-variant-numeric: tabular-nums;
}
.part-run:hover:not(:disabled) {
    background: var(--cca-amber-soft);
    transform: translateY(-1px);
}
.part-run:disabled {
    cursor: not-allowed;
    opacity: 0.72;
}
.part-run:focus-visible {
    outline: 2px solid var(--cca-amber);
    outline-offset: 3px;
}

.part-run-dot {
    width: 10px;
    height: 10px;
    background: var(--cca-ink);
    border-radius: 50%;
    transition: all 0.3s;
}
.part-run[data-state="running"] .part-run-dot {
    animation: part-run-pulse 0.6s ease-in-out infinite;
}
@keyframes part-run-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50%      { transform: scale(1.4); opacity: 0.4; }
}

/* ── Panels ──────────────────────────────────────────────── */
.part-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
@media (max-width: 1000px) {
    .part-panels {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

.part-panel {
    background: var(--cca-ink);
    border: 1px solid var(--cca-rule);
    padding: 28px 28px 32px;
    position: relative;
    transition: border-color 0.3s;
    display: flex;
    flex-direction: column;
}
.part-panel[data-state="running"],
.part-panel[data-state="complete"] {
    border-color: var(--cca-err);
}
.part-panel--b[data-state="running"],
.part-panel--b[data-state="complete"] {
    border-color: var(--cca-ok);
}

.part-panel-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--cca-rule-soft);
}

.part-panel-eyebrow {
    font-family: var(--cca-mono);
    font-size: 10px;
    letter-spacing: 0.24em;
    color: var(--cca-text-4);
    text-transform: uppercase;
    margin: 0 0 8px;
    font-weight: 600;
}
.part-panel--b .part-panel-eyebrow {
    color: var(--cca-ok);
}
.part-panel[data-state="complete"] .part-panel-eyebrow {
    color: var(--cca-err);
}
.part-panel--b[data-state="complete"] .part-panel-eyebrow {
    color: var(--cca-ok);
}

.part-panel-name {
    font-family: var(--cca-serif);
    font-size: 22px;
    font-weight: 400;
    color: var(--cca-text);
    margin: 0;
    letter-spacing: -0.01em;
    font-variation-settings: "opsz" 36;
}

.part-panel-spec {
    font-family: var(--cca-mono);
    font-size: 10px;
    letter-spacing: 0.06em;
    color: var(--cca-text-3);
    text-transform: uppercase;
    margin: 0;
    text-align: right;
    line-height: 1.5;
    max-width: 22ch;
    padding-top: 4px;
}

/* ── Subagent assignments row ─────────────────────────────── */
.part-subagents {
    display: flex;
    gap: 8px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}
.part-sub {
    flex: 1 1 0;
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: rgba(10, 15, 28, 0.5);
    border: 1px solid var(--cca-rule-soft);
    border-left: 3px solid var(--cca-rule);
    font-family: var(--cca-mono);
    font-size: 11px;
    color: var(--cca-text-3);
    letter-spacing: 0.02em;
    transition: border-color 0.3s, background 0.3s;
}
.part-sub[data-sub="1"] { border-left-color: var(--cca-amber); }
.part-sub[data-sub="2"] { border-left-color: var(--cca-teal); }
.part-sub[data-sub="3"] { border-left-color: var(--cca-ok); }

.part-sub-tag {
    color: var(--cca-text-2);
    font-weight: 600;
    letter-spacing: 0.08em;
}
.part-sub-arrow {
    color: var(--cca-text-4);
}
.part-sub-task {
    color: var(--cca-text-2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

/* Active pulse during run */
.part-sub[data-active="true"] {
    background: rgba(10, 15, 28, 0.85);
}
.part-sub[data-active="true"][data-sub="1"] { background: rgba(212, 162, 76, 0.08); }
.part-sub[data-active="true"][data-sub="2"] { background: rgba(45, 156, 202, 0.08); }
.part-sub[data-active="true"][data-sub="3"] { background: rgba(124, 201, 163, 0.08); }
.part-sub[data-active="true"] .part-sub-tag { color: var(--cca-text); }
.part-sub[data-active="true"] .part-sub-task { color: var(--cca-text); }

/* ── Score readout ──────────────────────────────────────── */
.part-score {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 18px;
    margin-bottom: 26px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--cca-rule-soft);
    font-variant-numeric: tabular-nums;
}
@media (max-width: 460px) {
    .part-score { grid-template-columns: 1fr 1fr; }
    .part-score-item:first-child { grid-column: 1 / -1; }
}

.part-score-item {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}
.part-score-num {
    font-family: var(--cca-serif);
    font-size: 36px;
    line-height: 1;
    font-weight: 300;
    color: var(--cca-text);
    letter-spacing: -0.04em;
    font-variation-settings: "opsz" 60, "SOFT" 30;
    transition: color 0.3s;
    min-width: 1.2ch;
}
.part-panel[data-state="complete"] .part-score-item:first-child .part-score-num {
    color: var(--cca-err);
}
.part-panel--b[data-state="complete"] .part-score-item:first-child .part-score-num {
    color: var(--cca-ok);
}
.part-score-item--warn .part-score-num { color: var(--cca-amber); }
.part-score-item--ok   .part-score-num { color: var(--cca-text-3); }
.part-panel[data-state="complete"] .part-score-item--warn .part-score-num { color: var(--cca-err); }
.part-panel--b[data-state="complete"] .part-score-item--ok   .part-score-num { color: var(--cca-ok); }

.part-score-denom {
    font-family: var(--cca-serif);
    font-size: 18px;
    line-height: 1;
    color: var(--cca-text-4);
    font-weight: 300;
}
.part-score-label {
    font-family: var(--cca-mono);
    font-size: 9.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--cca-text-3);
    line-height: 1.3;
    flex-basis: 100%;
    margin-top: 2px;
}

/* ── Coverage matrix ─────────────────────────────────────── */
.part-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;   /* pin to bottom so panels align */
}

.part-row {
    display: grid;
    grid-template-columns: minmax(68px, 86px) 1fr minmax(48px, auto);
    align-items: center;
    gap: 12px;
}

.part-row-label {
    font-family: var(--cca-mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--cca-text-3);
    font-weight: 600;
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
}

.part-row-cells {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 3px;
}

.part-cell {
    aspect-ratio: 1 / 1;
    background: var(--cca-ink-3);
    border: 1px solid var(--cca-rule-soft);
    transition: background 0.2s, border-color 0.2s, transform 0.22s var(--cca-ease);
    min-width: 0;
}
.part-cell[data-filled="true"] {
    animation: part-cell-pop 0.26s var(--cca-ease-out);
    border-color: transparent;
}
@keyframes part-cell-pop {
    0%   { transform: scale(0.4); opacity: 0; }
    60%  { transform: scale(1.12); }
    100% { transform: scale(1); opacity: 1; }
}

.part-cell[data-filled="true"][data-sub="1"] {
    background: var(--cca-amber-soft);
    box-shadow: 0 0 0 1px rgba(229, 184, 101, 0.25);
}
.part-cell[data-filled="true"][data-sub="2"] {
    background: var(--cca-teal-soft);
    box-shadow: 0 0 0 1px rgba(95, 180, 219, 0.25);
}
.part-cell[data-filled="true"][data-sub="3"] {
    background: var(--cca-ok);
    box-shadow: 0 0 0 1px rgba(124, 201, 163, 0.25);
}

/* Duplicates counter at end of row */
.part-dupes {
    font-family: var(--cca-mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--cca-text-4);
    letter-spacing: 0.02em;
    padding: 4px 8px;
    background: var(--cca-ink-3);
    border: 1px solid var(--cca-rule-soft);
    min-width: 42px;
    text-align: center;
    font-variant-numeric: tabular-nums;
    transition: color 0.22s, background 0.22s, border-color 0.22s, transform 0.22s var(--cca-ease);
}
.part-dupes[data-count="0"] {
    color: var(--cca-text-4);
    opacity: 0.45;
}
.part-dupes[data-state="active"] {
    color: var(--cca-ink);
    background: var(--cca-err);
    border-color: var(--cca-err);
    opacity: 1;
    animation: part-dupe-tick 0.25s var(--cca-ease-out);
}
@keyframes part-dupe-tick {
    0%   { transform: scale(1); }
    50%  { transform: scale(1.14); }
    100% { transform: scale(1); }
}

/* ── Legend ──────────────────────────────────────────────── */
.part-legend {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px dashed var(--cca-rule);
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    align-items: center;
    font-family: var(--cca-mono);
    font-size: 11px;
    color: var(--cca-text-3);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.part-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.part-legend-dot {
    width: 10px;
    height: 10px;
    display: inline-block;
    background: var(--cca-text-4);
}
.part-legend-dot[data-sub="1"] { background: var(--cca-amber-soft); }
.part-legend-dot[data-sub="2"] { background: var(--cca-teal-soft); }
.part-legend-dot[data-sub="3"] { background: var(--cca-ok); }
.part-legend-dot--dupe { background: var(--cca-err); }
.part-legend-dot--meta { background: var(--cca-ink-4); border: 1px solid var(--cca-rule); }

.part-runs-count {
    margin-left: auto;
    font-variant-numeric: tabular-nums;
}
@media (max-width: 640px) {
    .part-runs-count { margin-left: 0; }
}

/* ═══════════════════════════════════════════════════════════════
   SIMULATOR SURROUND
═══════════════════════════════════════════════════════════════ */

.s3-sim-intro { margin-bottom: 48px; }
.s3-sim-outro { margin-top: 48px; }
.s3-sim-outro p + p { margin-top: 16px; }

/* ═══════════════════════════════════════════════════════════════
   §05 — PATTERN REACH
   Three cards, each carrying one of the subagent accent colours
   from the simulator — visual continuity across the page.
═══════════════════════════════════════════════════════════════ */

.s3-examples {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}
@media (max-width: 880px) {
    .s3-examples { grid-template-columns: 1fr; gap: 16px; }
}

.s3-ex {
    background: var(--cca-ink-2);
    border: 1px solid var(--cca-rule);
    padding: 28px;
    border-top: 2px solid var(--cca-amber);
}
.s3-ex:nth-child(2) { border-top-color: var(--cca-teal); }
.s3-ex:nth-child(3) { border-top-color: var(--cca-ok); }

.s3-ex-label {
    font-family: var(--cca-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--cca-amber);
    margin: 0 0 6px;
    font-weight: 600;
}
.s3-ex:nth-child(2) .s3-ex-label { color: var(--cca-teal); }
.s3-ex:nth-child(3) .s3-ex-label { color: var(--cca-ok); }

.s3-ex-hook {
    font-family: var(--cca-mono);
    font-size: 11px;
    color: var(--cca-text-3);
    margin-bottom: 16px;
}
.s3-ex-hook code {
    background: transparent;
    border: none;
    padding: 0;
    color: var(--cca-amber-soft);
}
.s3-ex:nth-child(2) .s3-ex-hook code { color: var(--cca-teal-soft); }
.s3-ex:nth-child(3) .s3-ex-hook code { color: var(--cca-ok); }

.s3-ex h4 {
    font-family: var(--cca-serif);
    font-size: 20px;
    font-weight: 400;
    line-height: 1.25;
    margin: 0 0 12px;
    color: var(--cca-text);
}
.s3-ex p {
    font-size: 14.5px;
    line-height: 1.55;
    margin: 0;
    color: var(--cca-text-2);
}

/* ═══════════════════════════════════════════════════════════════
   §06 — THE ENVELOPE (three numbered fields)
═══════════════════════════════════════════════════════════════ */

.s3-envelope {
    margin: 40px 0 8px;
    counter-reset: env;
}
.s3-env-item {
    counter-increment: env;
    padding: 28px 28px 28px 72px;
    border-top: 1px solid var(--cca-rule-soft);
    position: relative;
}
.s3-env-item:last-child {
    border-bottom: 1px solid var(--cca-rule-soft);
}
.s3-env-item::before {
    content: counter(env, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 32px;
    font-family: var(--cca-mono);
    font-size: 14px;
    color: var(--cca-amber);
    letter-spacing: 0.1em;
    font-weight: 600;
    width: 56px;
    text-align: left;
}

.s3-env-label {
    font-family: var(--cca-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--cca-text-3);
    margin: 0 0 8px;
    font-weight: 600;
}

.s3-env-item h4 {
    font-family: var(--cca-serif);
    font-size: 24px;
    font-weight: 400;
    line-height: 1.25;
    margin: 0 0 12px;
    color: var(--cca-text);
    letter-spacing: -0.015em;
    font-variation-settings: "opsz" 36;
}
.s3-env-item h4 em {
    font-style: italic;
    color: var(--cca-amber);
    font-variation-settings: "opsz" 36, "SOFT" 100;
}

.s3-env-item p {
    font-size: 16px;
    line-height: 1.65;
    color: var(--cca-text-2);
    margin: 0;
    max-width: 68ch;
}

/* ═══════════════════════════════════════════════════════════════
   CLOSING CARD
═══════════════════════════════════════════════════════════════ */

.s3-close {
    text-align: center;
    padding: 120px 0 160px;
    position: relative;
}
.s3-close-eyebrow {
    font-family: var(--cca-mono);
    font-size: 11px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--cca-text-3);
    margin: 0 0 48px;
}
.s3-close-line {
    font-family: var(--cca-serif);
    font-size: clamp(32px, 5vw, 60px);
    line-height: 1.15;
    font-weight: 300;
    color: var(--cca-text);
    max-width: 24ch;
    margin: 0 auto;
    letter-spacing: -0.02em;
    font-variation-settings: "opsz" 96, "SOFT" 30;
    text-wrap: balance;
}
.s3-close-line em {
    font-style: italic;
    color: var(--cca-amber);
    font-weight: 400;
    font-variation-settings: "opsz" 96, "SOFT" 100, "WONK" 1;
}
.s3-close-line strong {
    font-weight: 400;
}

.s3-close-nav {
    margin-top: 72px;
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    font-family: var(--cca-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}
.s3-close-nav a {
    color: var(--cca-text-3);
    text-decoration: none;
    transition: color 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.s3-close-nav a:hover { color: var(--cca-amber); }

/* ═══════════════════════════════════════════════════════════════
   KEYBOARD HINT ROW (for simulator)
═══════════════════════════════════════════════════════════════ */

.s3-kbd-hint {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--cca-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--cca-text-4);
    margin-left: 14px;
    text-transform: uppercase;
}
.s3-kbd-hint kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--cca-ink-3);
    border: 1px solid var(--cca-rule);
    font-family: inherit;
    font-size: 10px;
    color: var(--cca-text-2);
    border-radius: 2px;
}

/* ═══════════════════════════════════════════════════════════════
   FINE RESPONSIVE ADJUSTMENTS
═══════════════════════════════════════════════════════════════ */

@media (max-width: 640px) {
    .s3-hero { padding-top: 80px; padding-bottom: 80px; }
    .part-sim { padding: 28px 18px 32px; }
    .part-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    .part-run { justify-content: center; }
    .part-panel-head {
        flex-direction: column;
        gap: 12px;
    }
    .part-panel-spec {
        text-align: left;
        max-width: none;
    }
    .part-score-num { font-size: 28px; }
    .part-row { grid-template-columns: 58px 1fr 42px; gap: 8px; }
    .part-row-label { font-size: 9px; letter-spacing: 0.06em; }
    .part-dupes { font-size: 10px; padding: 3px 6px; min-width: 36px; }
    .s3-env-item { padding-left: 52px; }
    .s3-env-item::before { width: 40px; font-size: 12px; }
}