/* manifold.css — Eckert Manifold page styles
   Chapter-based layout, interactive Pe calculator, zone visualization.
   ─────────────────────────────────────────────────────────── */

/* ── Hero ── */
#mf-hero {
    padding: 6rem 1.5rem 4rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
}
.mf-hero-content {
    max-width: 680px;
    margin: 0 auto;
}
.mf-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0 0 0.8rem;
    animation: mfFadeUp 0.5s ease both;
}
.mf-headline {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin: 0 0 1.2rem;
    animation: mfFadeUp 0.5s ease 0.05s both;
}
.mf-sub {
    font-size: clamp(0.92rem, 1.8vw, 1.05rem);
    color: var(--text-dim);
    line-height: 1.7;
    margin: 0 0 1rem;
    animation: mfFadeUp 0.5s ease 0.1s both;
}

@keyframes mfFadeUp {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Dial cards (O, R, α) ── */
.mf-dials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}
@media (max-width: 800px) { .mf-dials-grid { grid-template-columns: 1fr; } }

.mf-dial-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    transition: border-color 0.2s;
}
.mf-dial-card:hover { border-color: var(--accent); }

.mf-dial-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg);
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1rem;
    margin-bottom: 0.75rem;
}
.mf-dial-card h3 {
    font-size: 1.1rem;
    margin: 0 0 0.3rem;
}
.mf-dial-question {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.05em;
    margin: 0 0 0.6rem;
}
.mf-dial-card p {
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin: 0;
}

/* ── Callout box ── */
.mf-callout {
    border-left: 2px solid var(--accent);
    padding: 1rem 1.25rem;
    background: rgba(200,151,106,0.04);
    font-size: 0.88rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin-top: 1.5rem;
}
.mf-callout strong { color: var(--text); }

/* ── Pe Calculator ── */
.mf-calc {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
}
@media (max-width: 700px) {
    .mf-calc { grid-template-columns: 1fr; gap: 1.5rem; }
}

.mf-slider-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
}
.mf-slider-row label {
    grid-column: 1 / -1;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--text-faint);
    margin-bottom: 0.2rem;
}
.mf-slider-row input[type="range"] {
    width: 100%;
    accent-color: var(--accent);
    cursor: pointer;
}
.mf-slider-val {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text);
    min-width: 2.5rem;
    text-align: right;
}

/* Pe result display */
.mf-result {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.mf-pe-display {
    margin-bottom: 0.75rem;
}
.mf-pe-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-faint);
    display: block;
    margin-bottom: 0.2rem;
}
.mf-pe-value {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--accent);
    letter-spacing: -0.03em;
    line-height: 1;
    transition: color 0.3s;
}
.mf-pe-value.zone-safe { color: #3ddc84; }
.mf-pe-value.zone-sep { color: #f0c040; }
.mf-pe-value.zone-cascade { color: #ff6644; }
.mf-pe-value.zone-deep { color: #cc2222; }

.mf-zone-indicator { margin-bottom: 1rem; }
.mf-zone-name {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    display: block;
    margin-bottom: 0.2rem;
    transition: color 0.3s;
}
.mf-zone-desc {
    font-size: 0.78rem;
    color: var(--text-dim);
}

/* Pe bar */
.mf-pe-bar-wrap {
    width: 100%;
    max-width: 280px;
    position: relative;
}
.mf-pe-bar {
    height: 6px;
    background: var(--border);
    position: relative;
    overflow: visible;
    border-radius: 3px;
}
.mf-pe-bar-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.2s, background 0.3s;
    max-width: 100%;
}
.mf-pe-bar-sep {
    position: absolute;
    top: -3px;
    width: 1px;
    height: 12px;
    background: var(--text-faint);
}
.mf-pe-bar-labels {
    position: relative;
    height: 1.2rem;
    margin-top: 0.3rem;
}
.mf-pe-bar-labels span {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--text-faint);
    transform: translateX(-50%);
}
.mf-pe-bar-labels span:first-child { transform: none; }
.mf-pe-bar-labels span:last-child { transform: translateX(-100%); }

/* Presets row */
.mf-presets {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    margin: 1.5rem 0 1rem;
}
.mf-preset-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-faint);
    text-transform: uppercase;
}
.mf-preset {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-dim);
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}
.mf-preset:hover {
    border-color: var(--accent);
    color: var(--text);
}

.mf-formula-note {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-faint);
    text-align: center;
    line-height: 1.8;
}

/* ── Zone cards ── */
.mf-zones {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}
@media (max-width: 900px) { .mf-zones { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .mf-zones { grid-template-columns: 1fr; } }

.mf-zone {
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}
.mf-zone-pe {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 0.5rem;
}
.mf-zone h3 {
    font-size: 1rem;
    margin: 0 0 0.5rem;
}
.mf-zone p {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.6;
    margin: 0;
}

.mf-zone--safe    { border-left: 3px solid #3ddc84; }
.mf-zone--safe .mf-zone-pe { color: #3ddc84; }
.mf-zone--sep     { border-left: 3px solid #f0c040; }
.mf-zone--sep .mf-zone-pe { color: #f0c040; }
.mf-zone--cascade { border-left: 3px solid #ff6644; }
.mf-zone--cascade .mf-zone-pe { color: #ff6644; }
.mf-zone--deep    { border-left: 3px solid #cc2222; }
.mf-zone--deep .mf-zone-pe { color: #cc2222; }

/* ── Names grid (big names connections) ── */
.mf-names-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin: 2rem 0;
}
@media (max-width: 900px) { .mf-names-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .mf-names-grid { grid-template-columns: 1fr; } }

.mf-name-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    transition: border-color 0.2s;
}
.mf-name-card:hover { border-color: var(--accent); }
.mf-name-card h4 {
    font-size: 1.3rem;
    font-weight: 900;
    margin: 0 0 0.15rem;
}
.mf-name-field {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0 0 0.75rem;
}
.mf-name-card p:last-child {
    font-size: 0.85rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin: 0;
}

/* ── Evidence grid ── */
.mf-evidence-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin: 2rem 0;
}
@media (max-width: 900px) { .mf-evidence-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .mf-evidence-grid { grid-template-columns: 1fr; } }

.mf-ev-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    transition: border-color 0.2s;
}
.mf-ev-card:hover { border-color: var(--accent); }
.mf-ev-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.15rem 0.45rem;
    border-radius: 3px;
    margin-bottom: 0.6rem;
    color: #3ddc84;
    background: rgba(61,220,132,0.08);
    border: 1px solid rgba(61,220,132,0.2);
}
.mf-ev-tag--fail {
    color: #ff6644;
    background: rgba(255,102,68,0.08);
    border-color: rgba(255,102,68,0.2);
}
.mf-ev-card h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin: 0 0 0.4rem;
}
.mf-ev-card p {
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.6;
    margin: 0;
}

/* ── Constants grid ── */
.mf-const-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin: 2rem 0;
}
@media (max-width: 800px) { .mf-const-grid { grid-template-columns: 1fr; } }

.mf-const-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
}
.mf-const-symbol {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--text);
    display: block;
    margin-bottom: 0.2rem;
}
.mf-const-value {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--accent);
    display: block;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}
.mf-const-card p {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.6;
    margin: 0;
    text-align: left;
}
.mf-const-card strong { color: var(--text); }

/* ── Nav grid ── */
.mf-nav-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}
@media (max-width: 900px) { .mf-nav-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .mf-nav-grid { grid-template-columns: 1fr; } }

.mf-nav-card {
    display: flex;
    flex-direction: column;
    padding: 1.2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s, background 0.2s;
}
.mf-nav-card:hover {
    border-color: var(--accent);
    background: rgba(200,151,106,0.06);
}
.mf-nav-label {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 0.4rem;
}
.mf-nav-title {
    font-size: 1rem;
    font-weight: 700;
    flex: 1;
}
.mf-nav-arrow {
    font-size: 1rem;
    color: var(--text-faint);
    margin-top: 0.5rem;
    transition: transform 0.2s, color 0.2s;
}
.mf-nav-card:hover .mf-nav-arrow {
    color: var(--accent);
    transform: translateX(4px);
}