/* Math figure generators (/free-tools/math/...) */

/* ── Layout ─────────────────────────────────────────────────── */
.fig-main { padding: 1.5rem 0 3rem; }

.fig-layout {
    display: grid;
    grid-template-columns: 1fr var(--fig-settings-w, 24rem);
    gap: 1.5rem;
    align-items: start;
}

.fig-canvas-side { position: sticky; top: 1rem; }

/* ── Canvas card ────────────────────────────────────────────── */
.fig-card {
    background: #fff;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.75rem;
    overflow: hidden;
}
.fig-canvas { display: flex; flex-direction: column; }
.fig-sheet {
    padding: 0.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f9fafb;
}
.fig-sheet svg { max-width: 100%; height: auto; display: block; }

.fig-status {
    padding: 0.25rem 1rem 0.5rem;
    font-size: 0.82rem;
    color: var(--ink-soft, #6b7280);
    min-height: 1.5em;
}

/* ── Toolbar ────────────────────────────────────────────────── */
.fig-toolbar {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--line, #e5e7eb);
    background: #fff;
    flex-wrap: wrap;
}
.fig-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    border-radius: 0.375rem;
    background: none;
    color: var(--ink-soft, #6b7280);
    cursor: pointer;
    position: relative;
}
.fig-icon-btn:hover { background: #f3f4f6; color: var(--ink, #111827); }
.fig-icon-btn:active { background: #e5e7eb; }

.fig-icon-btn[data-tip]::after {
    content: attr(data-tip);
    position: absolute;
    bottom: -1.8rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.15rem 0.5rem;
    border-radius: 0.25rem;
    background: #1f2937;
    color: #fff;
    font-size: 0.72rem;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 10;
}
.fig-icon-btn:hover[data-tip]::after { opacity: 1; }

.fig-divider {
    width: 1px;
    height: 1.25rem;
    background: var(--line, #e5e7eb);
    margin: 0 0.25rem;
}

.fig-label-size {
    display: inline-flex;
    gap: 0.125rem;
    margin-left: auto;
}
.fig-size {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    background: none;
    cursor: pointer;
    color: var(--ink-soft, #6b7280);
    font-weight: 700;
    font-family: Arial, Helvetica, sans-serif;
}
.fig-size:hover { background: #f3f4f6; }
.fig-size.fig-on {
    border-color: var(--pen, #2563eb);
    background: #eff6ff;
    color: var(--pen, #2563eb);
}

/* ── Settings panel ─────────────────────────────────────────── */
.fig-settings {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.fig-settings .fig-card { padding: 1rem 1.25rem; }

.fig-settings h1.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.fig-lead p {
    font-size: 0.95rem;
    color: var(--ink-soft, #6b7280);
    margin: 0 0 0.75rem;
    line-height: 1.5;
}

.fig-examples-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.375rem;
    background: none;
    color: var(--ink-soft, #6b7280);
    font-size: 0.85rem;
    cursor: pointer;
}
.fig-examples-btn:hover { background: #f3f4f6; color: var(--ink, #111827); }

/* ── Collapsible sections ───────────────────────────────────── */
.fig-section { border: none; }
.fig-section summary {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0;
    cursor: pointer;
    list-style: none;
    user-select: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ink, #111827);
}
.fig-section summary::-webkit-details-marker { display: none; }
.fig-section summary::marker { display: none; content: ''; }

.fig-section .fig-sec-icon {
    display: inline-flex;
    color: var(--ink-soft, #6b7280);
    flex-shrink: 0;
}
.fig-section .fig-sec-text { flex: 1; min-width: 0; }
.fig-section .fig-sec-title { display: block; }
.fig-section .fig-sec-summary {
    display: block;
    font-size: 0.78rem;
    font-weight: 400;
    color: var(--ink-soft, #6b7280);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.fig-section .fig-sec-chevron {
    display: inline-flex;
    color: var(--ink-soft, #6b7280);
    transition: transform 0.15s;
    flex-shrink: 0;
}
.fig-section[open] .fig-sec-chevron { transform: rotate(180deg); }
.fig-section .fig-sec-body { padding: 0 0 0.5rem; }

/* ── Form fields ────────────────────────────────────────────── */
.fig-field {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    margin-bottom: 0.75rem;
}
.fig-field > span,
.fig-field > label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ink, #111827);
}
.fig-field .fig-hint {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--ink-soft, #6b7280);
}
.fig-field input[type="text"],
.fig-field select {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.375rem;
    font-size: 0.88rem;
    font-family: inherit;
    background: #fff;
    color: var(--ink, #111827);
}
.fig-field input[type="text"]:focus,
.fig-field select:focus {
    outline: 2px solid var(--pen, #2563eb);
    outline-offset: -1px;
    border-color: transparent;
}

.fig-range-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.5rem;
}

/* Segmented controls (Text / Blank line / None toggles) */
.fig-seg {
    display: inline-flex;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.375rem;
    overflow: hidden;
}
.fig-seg label,
.fig-seg button {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.6rem;
    border: none;
    border-right: 1px solid var(--line, #e5e7eb);
    background: none;
    font-size: 0.8rem;
    color: var(--ink-soft, #6b7280);
    cursor: pointer;
    white-space: nowrap;
}
.fig-seg label:last-child,
.fig-seg button:last-child { border-right: none; }
.fig-seg input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
.fig-seg label:has(input:checked),
.fig-seg button.fig-on {
    background: var(--pen, #2563eb);
    color: #fff;
}
.fig-seg label:hover:not(:has(input:checked)),
.fig-seg button:hover:not(.fig-on) {
    background: #f3f4f6;
    color: var(--ink, #111827);
}

/* End-style picker */
.fig-ends {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

/* ── Equation rows ──────────────────────────────────────────── */
.fig-eq-section .fig-card { padding: 0.75rem 1rem; }

.fig-eq-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}
.fig-eq-head h2 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0;
}
.fig-eq-help {
    font-size: 0.78rem;
    color: var(--ink-soft, #6b7280);
    cursor: help;
}

.fig-eq-row {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 0.5rem;
}

.fig-eq-style-btn {
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--line, #e5e7eb);
    border-radius: 0.375rem;
    cursor: pointer;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.fig-eq-input {
    flex: 1;
    min-width: 0;
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.375rem;
    font-size: 0.88rem;
    font-family: inherit;
    resize: none;
    line-height: 1.4;
    background: #fff;
    color: var(--ink, #111827);
}
.fig-eq-input:focus {
    outline: 2px solid var(--pen, #2563eb);
    outline-offset: -1px;
    border-color: transparent;
}
.fig-eq-input::placeholder { color: #9ca3af; }

.fig-eq-remove {
    width: 1.5rem;
    height: 1.5rem;
    border: none;
    border-radius: 0.25rem;
    background: none;
    color: var(--ink-soft, #6b7280);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    padding: 0;
}
.fig-eq-remove:hover { background: #fee2e2; color: #dc2626; }

.fig-eq-add {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.6rem;
    border: none;
    background: none;
    color: var(--pen, #2563eb);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
}
.fig-eq-add:hover { text-decoration: underline; }

/* ── Style popover ──────────────────────────────────────────── */
.fig-style-popover {
    position: absolute;
    z-index: 100;
    background: #fff;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.75rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 1rem;
    min-width: 14rem;
}
.fig-style-popover .fig-colors {
    display: flex;
    gap: 0.35rem;
    margin-bottom: 0.75rem;
}
.fig-color-swatch {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    padding: 0;
}
.fig-color-swatch.fig-on { border-color: var(--ink, #111827); }

.fig-style-popover .fig-seg { margin-bottom: 0.5rem; }

.fig-style-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
    font-size: 0.82rem;
}
.fig-style-row label { display: flex; align-items: center; gap: 0.3rem; cursor: pointer; }

/* ── Presets ────────────────────────────────────────────────── */
.fig-presets { padding: 0.75rem 1rem; }
.fig-presets .fig-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.5rem; }
.fig-preset-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 1rem;
    background: #fff;
    font-size: 0.78rem;
    cursor: pointer;
}
.fig-preset-chip:hover { background: #f3f4f6; }
.fig-preset-del {
    border: none;
    background: none;
    color: var(--ink-soft, #6b7280);
    cursor: pointer;
    font-size: 0.7rem;
    padding: 0;
    line-height: 1;
}
.fig-preset-del:hover { color: #dc2626; }

.fig-save-preset {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.375rem;
    background: none;
    font-size: 0.82rem;
    color: var(--ink-soft, #6b7280);
    cursor: pointer;
}
.fig-save-preset:hover { background: #f3f4f6; color: var(--ink, #111827); }

.fig-presets .fig-hint {
    font-size: 0.75rem;
    color: var(--ink-soft, #6b7280);
    margin-top: 0.5rem;
}

.fig-preset-load {
    border: none;
    background: none;
    cursor: pointer;
    font: inherit;
    color: inherit;
    padding: 0;
}
.fig-preset-load:hover { color: var(--pen, #2563eb); }

/* Save/load CTA for anonymous users */
.fig-save-cta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--ink-soft, #6b7280);
}
.fig-save-cta svg { flex-shrink: 0; color: var(--ink-soft, #6b7280); }
.fig-save-cta-links {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.6rem;
}
.fig-save-cta-links a.fig-cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.4rem 0.85rem;
    border-radius: 0.375rem;
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    line-height: 1.4;
}
a.fig-cta-signup {
    background: #2563eb;
    color: #fff !important;
}
a.fig-cta-signup:hover { background: #1d4ed8; }
a.fig-cta-login {
    background: #f3f4f6;
    color: #374151 !important;
    border: 1px solid #e5e7eb;
}
a.fig-cta-login:hover { background: #e5e7eb; }

/* ── Examples gallery ───────────────────────────────────────── */
.fig-examples-drawer {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0,0,0,0.35);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}
.fig-examples-drawer.fig-open {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}
.fig-examples-inner {
    position: relative;
    background: #fff;
    border-radius: 1rem;
    max-width: 52rem;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    padding: 1.25rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    -webkit-overflow-scrolling: touch;
}
.fig-examples-inner h2 { font-size: 1.25rem; font-weight: 700; margin: 0 0 0.25rem; }
.fig-examples-sub { font-size: 0.875rem; color: #6b7280; margin: 0 0 1.25rem; }
.fig-examples-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}
@media (min-width: 640px) {
    .fig-examples-inner { padding: 2rem; }
    .fig-examples-inner h2 { font-size: 1.35rem; }
    .fig-examples-grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
    .fig-example-thumb { min-height: 10rem; padding: 1.25rem 1rem; }
    .fig-example-thumb svg { max-height: 12rem; }
    .fig-example-card .fig-example-caption { padding: 0.75rem 1rem; font-size: 0.9rem; }
}
.fig-example-card {
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    background: #fff;
    padding: 0;
    display: flex;
    flex-direction: column;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.fig-example-card:hover { border-color: #2563eb; box-shadow: 0 4px 12px rgba(37,99,235,0.12); }
.fig-example-card:active { background: #f0f7ff; }
.fig-example-thumb {
    background: #f9fafb;
    padding: 1rem 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 8rem;
    border-bottom: 1px solid #f3f4f6;
}
.fig-example-thumb svg { max-height: 10rem; width: 100%; }
.fig-example-card .fig-example-caption {
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.3;
    text-align: left;
}
.fig-examples-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2.25rem;
    height: 2.25rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    background: #f9fafb;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    color: #6b7280;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}
.fig-examples-close:hover { background: #e5e7eb; }

/* ── Force rows (Free Body Diagram) ──────────────────────────── */
.fig-force-row {
    padding: 0.625rem 0.75rem !important;
    margin-bottom: 0.5rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    background: #fafafa;
}
.fig-force-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.fig-force-swatch {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    flex-shrink: 0;
}
.fig-force-name {
    font-weight: 600;
    font-size: 0.85rem;
    flex: 1;
    min-width: 0;
}
.fig-force-remove {
    border: none;
    background: none;
    color: #9ca3af;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    padding: 0.125rem 0.25rem;
    border-radius: 0.25rem;
}
.fig-force-remove:hover { color: #dc2626; background: #fee2e2; }
.fig-force-body { display: flex; flex-direction: column; gap: 0.375rem; }
.fig-force-body .fig-row { gap: 0.375rem; }
.fig-dir-group { display: flex; align-items: center; gap: 0.375rem; flex: 1; }
.fig-dir-group input { width: 4rem; }
.fig-dir-btns { display: flex; gap: 2px; }
.fig-dir-btn {
    border: 1px solid #d1d5db;
    background: #fff;
    cursor: pointer;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #374151;
}
.fig-dir-btn:hover { background: #f3f4f6; border-color: #9ca3af; }
.fig-label-group { display: flex; gap: 0.375rem; flex: 1; }
.fig-label-group input { flex: 1; min-width: 0; }
.fig-label-group select { width: auto; min-width: 5rem; }
.fig-force-opts { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.fig-force-opts label { font-size: 0.8rem; display: flex; align-items: center; gap: 0.25rem; }
.fig-btn-sm {
    padding: 0.375rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    background: #fff;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    color: #374151;
    white-space: nowrap;
}
.fig-btn-sm:hover { background: #f3f4f6; border-color: #9ca3af; }

/* ── Toast ──────────────────────────────────────────────────── */
.fig-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    background: #1f2937;
    color: #fff;
    font-size: 0.85rem;
    z-index: 300;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}
.fig-toast.fig-toast-show { opacity: 1; }

/* ── Hub page ───────────────────────────────────────────────── */
.fig-hub-head { text-align: center; padding: 2rem 0 1.5rem; }
.fig-hub-head .hp-kicker { font-size: 0.85rem; color: var(--ink-soft, #6b7280); margin-bottom: 0.5rem; }
.fig-hub-head h1 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); margin: 0 0 0.75rem; }
.fig-hub-head .hp-intro { font-size: 1rem; color: var(--ink-soft, #6b7280); max-width: 38rem; margin: 0 auto; line-height: 1.6; }

.fig-hub-group { margin-bottom: 2rem; }
.fig-hub-group h2 { font-size: 1.1rem; font-weight: 700; margin: 0 0 0.75rem; }

.fig-hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
    gap: 1rem;
}
.fig-hub-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line, #e5e7eb);
    border-radius: 0.75rem;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.fig-hub-card:hover {
    border-color: var(--pen, #2563eb);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.08);
}
.fig-hub-card .fig-hub-demo {
    height: 8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f9fafb;
    padding: 1rem;
}
.fig-hub-card .fig-hub-demo svg { max-width: 100%; max-height: 100%; }
.fig-hub-card .fig-hub-body { padding: 0.75rem 1rem; }
.fig-hub-card .fig-hub-body strong { display: block; font-size: 0.92rem; margin-bottom: 0.25rem; }
.fig-hub-card .fig-hub-body span { font-size: 0.82rem; color: var(--ink-soft, #6b7280); line-height: 1.4; }

/* ── CTA band (same pattern as worksheets) ──────────────────── */
.fig-cta {
    text-align: center;
    padding: 2rem 1.5rem;
    margin-top: 2rem;
    background: #f9fafb;
    border-radius: 0.75rem;
}
.fig-cta h2 { font-size: 1.25rem; margin: 0 0 0.5rem; }
.fig-cta p { font-size: 0.95rem; color: var(--ink-soft, #6b7280); max-width: 32rem; margin: 0 auto; line-height: 1.5; }
.fig-cta a { color: var(--pen, #2563eb); }

/* ── Print ──────────────────────────────────────────────────── */
@media print {
    .no-print,
    .lp-nav, .lp-strip, .lp-footer,
    .fig-settings, .fig-toolbar, .fig-status { display: none !important; }

    .fig-layout { display: block; }
    .fig-canvas-side { position: static; }
    .fig-card { border: none; }
    .fig-sheet { padding: 0; background: #fff; }
    .fig-sheet svg { max-width: 100%; width: 100%; }

    @page { size: letter; margin: 0.5in; }
}

body.fig-printing .no-print,
body.fig-printing .lp-nav,
body.fig-printing .lp-strip,
body.fig-printing .lp-footer,
body.fig-printing .fig-settings,
body.fig-printing .fig-toolbar,
body.fig-printing .fig-status { display: none !important; }
body.fig-printing .fig-layout { display: block; }
body.fig-printing .fig-canvas-side { position: static; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
    .fig-layout {
        grid-template-columns: 1fr;
    }
    .fig-canvas-side { position: static; order: 2; }
    .fig-settings { order: 1; }
}

@media (max-width: 600px) {
    .fig-main { padding: 0.75rem 0 2rem; }
    .fig-layout { gap: 0.75rem; }
    .fig-settings .fig-card { padding: 0.75rem 1rem; }
    .fig-range-row { grid-template-columns: 1fr 1fr; }
    .fig-range-row > :last-child { grid-column: 1 / -1; }
    .fig-ends { grid-template-columns: 1fr; }

    .fig-hub-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
}