/* Optimizer workspace styles - loaded by optimizer.html after style.css. */

/* Theme palette. Light is the default; theme_toggle.js applies the dark
   set by setting data-theme="dark" on <html> (persisted in localStorage). */
:root {
    --bg-sidebar: #FFFFFF;
    --bg-main: #F8FAFC;
    --bg-card: #FFFFFF;
    --border-subtle: rgba(0, 0, 0, 0.06);
    --border-softer: rgba(0, 0, 0, 0.04);
    --card-sheen: none;
    --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --complete-bg: rgba(27, 127, 75, 0.08);
    --accent-bg-recommendation: #EFF6FF;
    --accent-border-recommendation: rgba(37, 99, 235, 0.2);
    --control-bg: #FFFFFF;
    --control-border: rgba(0, 0, 0, 0.08);
    --control-border-hover: rgba(0, 0, 0, 0.16);
    --control-focus-bg: rgba(0, 0, 0, 0.04);
    --btn-bg: #FFFFFF;
    --btn-border: rgba(0, 0, 0, 0.08);
    --btn-bg-hover: #F1F5F9;
    --btn-border-hover: rgba(0, 0, 0, 0.16);
    --btn-text: #334155;
    /* Constants - identical in both themes. */
    --overlay-bg: rgba(0, 0, 0, 0.55);
    --on-accent-text: #FFFFFF;
}

html[data-theme="dark"] {
    --bg-sidebar: #000000;
    --bg-main: #0A0A0A;
    --bg-card: #13151A;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-softer: rgba(255, 255, 255, 0.05);
    --card-sheen: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
    --card-shadow: none;
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --complete-bg: rgba(52, 211, 153, 0.15);
    --accent-bg-recommendation: rgba(37, 99, 235, 0.04);
    --accent-border-recommendation: rgba(37, 99, 235, 0.15);
    --control-bg: rgba(255, 255, 255, 0.04);
    --control-border: rgba(255, 255, 255, 0.10);
    --control-border-hover: rgba(255, 255, 255, 0.20);
    --control-focus-bg: rgba(255, 255, 255, 0.06);
    --btn-bg: rgba(255, 255, 255, 0.03);
    --btn-border: rgba(255, 255, 255, 0.12);
    --btn-bg-hover: rgba(255, 255, 255, 0.08);
    --btn-border-hover: rgba(255, 255, 255, 0.20);
    --btn-text: #F9F9F9;
}

/* Theme switch transition on the structural surfaces (backgrounds, borders,
   text). Small controls keep their fast hover transitions untouched. */
.optimizer-forms,
.optimizer-layout,
.optimizer-header,
.optimizer-header .header-left,
.optimizer-header .optimizer-toolbar,
.optimizer-header .header-right,
.optimizer-results .card-box,
.opt-card {
    transition: background-color 300ms ease, color 300ms ease, border-color 300ms ease, box-shadow 300ms ease;
}

/* Header */
.header {
    background-color: rgba(26, 26, 26, 0.85);
    padding: 1rem 2rem;
    color: var(--fg);
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
    border-bottom: 0.5px solid var(--line);
    backdrop-filter: blur(12px);
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-left {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
}
.header-right {
    display: flex;
    align-items: center;
    gap: 18px;
}
.header-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
/* Brand name: the single 600-weight exception of the system */
.header-title-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    text-decoration: none;
    color: inherit;
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.header-title-link:hover,
.header-title-link:active {
    color: inherit;
    text-decoration: none;
}
.simulation-form {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.optimizer-page .simulation-form {
    align-items: stretch;
}
.main-column {
    width: 100%;
}
/* Both columns stay in document flow so the workspace has one scroll. */
.optimizer-layout {
    display: grid;
    grid-template-columns: var(--hint-optimizer-forms-width) minmax(0, 1fr);
    align-items: stretch;
    width: 100%;
    min-height: calc(100svh - var(--hint-workspace-header-height));
}
.optimizer-forms {
    min-width: 0;
    padding: 24px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-subtle);
}
.optimizer-results {
    min-width: 0;
    width: 100%;
    max-width: 1440px;
    margin-inline: auto;
    padding: 32px clamp(24px, 3vw, 48px) 48px;
    scroll-margin-top: calc(var(--hint-workspace-header-height) + 24px);
}
/* Near-black canvas behind the cards, so tinted surfaces read against it. */
.optimizer-page .optimizer-layout {
    background: var(--bg-main);
}
.optimizer-results .card-box {
    background-color: var(--bg-card);
    background-image: var(--card-sheen);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--card-shadow);
    border-radius: 8px;
}
.simulation-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 0;
}
.stacked-card-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
    height: 100%;
}
.card-title-info-btn {
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 0;
    margin-left: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    color: var(--muted-2);
    opacity: 0.7;
    transition: opacity 160ms ease;
}
.card-title-info-btn svg {
    display: block;
    width: 15px;
    height: 15px;
}
.card-title-info-btn:hover,
.card-title-info-btn:focus-visible {
    opacity: 1;
}
.card-title-info-btn:focus-visible {
    outline: none;
}
.results-section-header .card-title-info-btn {
    display: inline-flex;
    vertical-align: middle;
}
@media (max-width: 1024px) {
    .header {
        padding: 0.75rem 1.25rem;
    }
    .optimizer-layout {
        grid-template-columns: minmax(0, 1fr);
    }
    .optimizer-forms {
        padding: 24px;
        border-right: none;
        border-bottom: 0.5px solid var(--line);
    }
    .optimizer-results {
        padding: 24px;
    }
    .flow-details-content {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}
.form-control {
    width: 100%;
    padding: 10px;
    background-color: var(--card);
    border: 0.5px solid var(--line-strong);
    color: var(--fg);
    box-sizing: border-box;
    font-family: inherit;
    transition: border-color 160ms ease;
}
.form-control:focus {
    border-color: var(--accent);
    outline: none;
}
.form-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.form-col {
    flex: 1;
    min-width: 200px;
    margin-bottom: 15px;
}
/* Settings modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
.modal-content {
    background: var(--card);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    border: 0.5px solid var(--line-strong);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 0.5px solid var(--line);
}
.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}
.modal-footer {
    display: flex;
    justify-content: flex-end;
    padding: 1rem 1.5rem;
    border-top: 0.5px solid var(--line);
}
.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--muted);
    padding: 0 8px;
}
.modal-close:hover {
    color: var(--fg);
}
/* Dashboard */
.results-dashboard {
    background-color: transparent;
    border: none;
    padding: 0;
    width: 100%;
}
.optimizer-page .results-dashboard {
    margin-top: 0;
}
/* Flow list */
.flow-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.flow-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    padding: 2px 0;
}
.flow-item[hidden] {
    display: none;
}
/* Optimization progress card (real pymoo progress polled from the ML API) */
.optimization-progress[hidden] {
    display: none;
}
.optimization-progress__card {
    max-width: 560px;
    margin: 0 auto 24px;
}
.optimization-progress__title {
    margin: 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--fg);
}
.optimization-progress__track {
    height: 6px;
    background-color: var(--bg-alt);
}
.optimization-progress__fill {
    height: 100%;
    width: 0%;
    background-color: var(--accent-fill);
    transition: width 400ms ease;
}
.optimization-progress__stats {
    margin: 0;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
}
.optimization-progress__percent {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--accent);
}
.optimization-progress__counters {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--muted);
    text-align: right;
}
@media (prefers-reduced-motion: reduce) {
    .optimization-progress__fill {
        transition: none;
    }
}
/* Modal / alert popup */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 160ms ease;
}
.modal-content {
    background-color: var(--card);
    border: 0.5px solid var(--line-strong);
    padding: 24px;
    width: 90%;
    max-width: 500px;
    position: relative;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    border-bottom: 0.5px solid var(--line);
    padding-bottom: 12px;
}
.modal-title {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--fg);
}
.modal-close {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    padding: 4px;
    transition: color 160ms ease;
}
.modal-close:hover {
    color: var(--accent);
}
.modal-body {
    color: var(--muted);
    margin-bottom: 24px;
    line-height: 1.6;
}
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}
.modal-btn--secondary {
    background-color: transparent;
    color: var(--muted);
    border: 0.5px solid var(--line-strong);
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 500;
    transition: border-color 160ms ease, color 160ms ease;
}
.modal-btn--secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.hint-input {
    width: 100%;
    padding: 10px 12px;
    border: 0.5px solid var(--line-strong);
    background: var(--card);
    color: var(--fg);
    font-size: 0.95rem;
    box-sizing: border-box;
    transition: border-color 160ms ease;
}
.hint-input:focus {
    outline: none;
    border-color: var(--accent);
}
.hint-input::placeholder {
    color: var(--faint);
}
.modal-field-label {
    display: block;
    margin-bottom: 8px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted-2);
}
.modal-field-hint {
    margin-top: 8px;
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.4;
}
.modal-btn {
    background-color: var(--accent-fill);
    color: var(--on-accent-text);
    border: 0.5px solid var(--accent-fill);
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 160ms ease, border-color 160ms ease;
}
.modal-btn:hover {
    background-color: var(--fg);
    border-color: var(--fg);
    color: var(--bg);
}
.modal-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(36, 82, 224, 0.35);
}
.form-submit-section {
    margin-top: 24px;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
}
.form-submit-section--centered {
    align-items: center;
    gap: 16px;
}
.optimizer-disclaimer {
    margin: 12px 0 0;
    max-width: none;
    align-self: stretch;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.5;
    color: var(--muted-2);
    opacity: 0.7; /* dimmed so it blends into the page */
}
.optimization-detail {
    color: var(--muted-2);
    font-size: 0.95rem;
    text-align: center;
}
.optimization-detail--results {
    color: var(--muted);
    font-style: normal;
    font-size: 0.9rem;
    text-align: left;
    margin-left: auto;
}
.optimizer-page .results-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}
.results-meta-heading {
    display: flex;
    align-items: baseline;
    gap: 4px;
    flex: 1;
}
.workspace-region-title {
    margin: 0;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: -0.02em;
}
.results-section {
    display: grid;
    gap: 12px;
    margin-top: 32px;
}
.results-section-header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    min-height: 20px;
}
.results-section-title {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 12px !important;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted-2);
}
/* Main CTA: the single solid accent button of the page */
.btn-cta-floating {
    display: inline-flex !important;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--accent-fill);
    color: var(--on-accent-text);
    border: 0.5px solid var(--accent-fill);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease;
    width: fit-content !important;
    max-width: fit-content !important;
}
.btn-cta-floating__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    text-align: center;
}
.btn-cta-floating__label {
    line-height: 1.1;
}
.btn-cta-floating:hover {
    background: var(--fg);
    border-color: var(--fg);
    color: var(--bg);
}
.btn-cta-floating:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(36, 82, 224, 0.35);
}
.btn-cta-floating svg {
    width: 20px;
    height: 20px;
}
@media (max-width: 1024px) {
    .form-submit-section {
        margin-top: 16px;
    }
    .btn-cta-floating {
        padding: 14px 28px;
        font-size: 0.95rem;
        width: 100%;
        justify-content: center;
    }
    .btn-cta-floating svg {
        width: 18px;
        height: 18px;
    }
}
.component-monthly {
    font-size: 0.75rem;
    color: var(--muted);
    font-weight: 400;
}
/* Sankey diagram container */
.sankey-container {
    min-height: 400px;
    width: 100%;
    margin-bottom: 24px;
}
@media (max-width: 1024px) {
    .cash-flow-section {
        display: none;
    }
}
.flow-details-content {
    margin-top: 16px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.financial-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}
.financial-card-stack {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
/* Taxes card is the only direct-child card: it stretches to the left column's total height. */
.financial-cards-grid > .opt-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}
@media (max-width: 1024px) {
    .financial-cards-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}
.flow-section {
    background: var(--bg);
    padding: 16px;
    border: 0.5px solid var(--line);
}
.optimizer-page .flow-section--details .flow-list {
    gap: 6px;
}
.optimizer-page .flow-section--details .flow-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    align-items: baseline;
    padding: 3px 0;
}
.optimizer-page .flow-section--details .component-monthly {
    margin-top: 1px;
    font-size: 0.78rem;
    color: var(--muted);
}
.recommendations-card {
    padding: 24px 20px;
}
.optimizer-results .card-box.recommendations-card {
    background-color: var(--accent-bg-recommendation);
    border: 1px solid var(--accent-border-recommendation);
}
.recommendations-card .flow-details-content {
    display: block;
    margin-top: 0;
}
.recommendations-card .flow-list {
    gap: 12px;
}
.recommendations-card .decision-sentence {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
    overflow-wrap: anywhere;
}
.recommendations-card .decision-amount {
    font-variant-numeric: tabular-nums;
    font-weight: 500;
    color: var(--accent);
}
.recommendations-card .decision-key {
    font-weight: 500;
    color: var(--fg);
}
.solution-navigation {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.nav-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    background: var(--card);
    border: 0.5px solid var(--line-strong);
    color: var(--fg);
    cursor: pointer;
    transition: border-color 160ms ease, color 160ms ease;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
}
.nav-btn svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}
.solution-info {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
    min-width: 96px;
}
.solution-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--muted-2);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 400;
}
.solution-counter {
    font-size: 14px;
    color: var(--fg);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}
/* Optimizer workspace */
.optimizer-page {
    --hint-optimizer-forms-width: 320px;
    --hint-workspace-header-height: 80px;
    position: relative;
    background-color: var(--bg);
}
.optimizer-page .optimizer-header {
    padding: 0;
    background: var(--bg-main);
    border-bottom: none;
}
/* Square corners: the universal * border-radius would otherwise curve the
   black/gray separator where the header cells meet at the top of the screen. */
.optimizer-header,
.optimizer-header .header-left,
.optimizer-header .optimizer-toolbar,
.optimizer-header .header-right {
    border-radius: 0;
}
.optimizer-header .header-container {
    display: grid;
    grid-template-columns: var(--hint-optimizer-forms-width) minmax(0, 1fr) auto;
    min-height: 80px;
    max-width: none;
    align-items: stretch;
}
.optimizer-header .header-left {
    align-items: center;
    align-self: stretch;
    padding: 16px 24px;
    background: var(--bg-sidebar); /* same black as the sidebar below: one continuous left column */
    border-right: 1px solid var(--border-subtle); /* separator runs to the very top of the screen */
}

/* The header carries both logo artworks (hint.svg has dark ink, hint-light.svg
   white ink): only the one matching the active theme is shown. The show rule
   must come after the hide rule - same specificity, source order decides. */
.optimizer-header .header-logo--white-ink {
    display: none;
}

html[data-theme="dark"] .optimizer-header .header-logo {
    display: none;
}

html[data-theme="dark"] .optimizer-header .header-logo--white-ink {
    display: inline;
}
.optimizer-header .header-right {
    gap: 8px;
    padding-right: 24px;
    background: var(--bg-main); /* same gray as the results canvas */
    border-bottom: 1px solid var(--border-softer); /* barely-there structure when content scrolls under */
}
.optimizer-header .user-menu {
    margin-right: 0;
}
.optimizer-header .hint-storage-header-toggle {
    width: auto;
    min-height: 36px;
    gap: 8px;
    padding-inline: 8px;
    font: inherit;
    font-size: 13px;
    white-space: nowrap;
}
.optimizer-toolbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    min-width: 0;
    padding: 16px 24px;
    background: var(--bg-main); /* same gray as the results canvas: one continuous right zone */
    border-bottom: 1px solid var(--border-softer); /* barely-there structure when content scrolls under */
}
.optimizer-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}
.optimizer-toolbar-actions .hint-storage-save-trigger {
    min-height: 36px;
    padding: 6px 12px;
    font-size: 13px;
}
.optimizer-toolbar > .btn-cta-floating {
    min-height: 36px;
    padding: 8px 14px;
    font-size: 13px;
}
.optimizer-header .hint-storage-header-toggle,
.optimizer-header .hint-storage-save-trigger,
.optimizer-header .user-menu-trigger,
.optimizer-header .btn-cta-floating {
    height: 36px;
    min-height: 36px; /* overrides the 44px min-height on the save-trigger base */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.optimizer-header .hint-storage-header-toggle,
.optimizer-header .hint-storage-save-trigger,
.optimizer-header .user-menu-trigger {
    background: var(--btn-bg);
    border: 1px solid var(--btn-border);
    border-radius: 6px;
    color: var(--btn-text);
}
.optimizer-header .hint-storage-header-toggle:hover,
.optimizer-header .hint-storage-save-trigger:hover,
.optimizer-header .user-menu-trigger:hover {
    background: var(--btn-bg-hover);
}
.optimizer-forms > .workspace-region-title {
    margin-bottom: 32px;
}
.optimizer-forms .simulation-grid {
    gap: 16px;
}
.optimizer-forms .stacked-card-column {
    gap: 16px;
}
.optimizer-forms .card-title-info-btn {
    width: 44px;
    height: 44px;
    margin: -12px 0;
    justify-content: flex-end;
}
.optimizer-forms .card-box {
    padding: 14px 16px;
}
.optimizer-forms .card-box .form-group {
    margin-bottom: 22px;
}
.optimizer-forms .card-box .form-group:last-child {
    margin-bottom: 0;
}
.optimizer-forms .card-box label {
    margin-bottom: 8px;
    color: var(--text-secondary);
}
.optimizer-forms .card-box small {
    display: block;
    margin-top: 6px;
    font-size: 11px;
    line-height: 1.45;
    opacity: 0.75;
}
.optimizer-forms .card-box input,
.optimizer-forms .card-box select,
.optimizer-forms .card-box textarea,
.optimizer-forms .card-box .form-control {
    background-color: var(--control-bg);
    border: 1px solid var(--control-border);
    color: var(--text-primary);
}
.optimizer-forms .card-box input:hover,
.optimizer-forms .card-box select:hover,
.optimizer-forms .card-box textarea:hover,
.optimizer-forms .card-box .form-control:hover {
    border-color: var(--control-border-hover);
}
.optimizer-forms .card-box input:focus,
.optimizer-forms .card-box select:focus,
.optimizer-forms .card-box textarea:focus,
.optimizer-forms .card-box .form-control:focus {
    background-color: var(--control-focus-bg);
    border-color: var(--accent);
}
.optimizer-forms .choice-segment label {
    margin-bottom: 0;
    border: 1px solid var(--control-border);
    transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}
.optimizer-forms .choice-segment > div > div + div label {
    margin-left: -1px; /* adjacent segments share one border */
}
.optimizer-forms .choice-segment label:has(input:checked) {
    border-color: color-mix(in srgb, var(--accent-on-dark) 55%, transparent);
}
/* Section accordions: initial state lives in the markup (first section open);
   panels animate via grid-template-rows, no JS height math. */
.card-accordion.is-collapsed {
    gap: 0;
}
/* theme.css rounds every element (* { border-radius }), which curved the
   ends of the hairline under expanded titles. */
.optimizer-forms .card-accordion > h3 {
    font-size: 10px !important; /* base rule in style.css uses !important */
    letter-spacing: 0.08em;
    border-radius: 0;
}
.card-accordion > h3 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
}
.card-accordion__toggle {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 6px;
    padding: 6px 10px;
    background: var(--bg-alt);
    border: 0.5px solid var(--line-strong);
    border-radius: var(--radius);
    font: inherit;
    letter-spacing: inherit;
    text-transform: inherit;
    color: inherit;
    text-align: left;
    cursor: pointer;
    transition: background-color 160ms ease;
}
.card-accordion__toggle:hover {
    background: var(--line-strong);
}
/* The title is the only element allowed to shrink: min-width: 0 is what
   makes text-overflow work inside a flex container. */
.card-accordion__title {
    flex: 0 1 auto;
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.card-accordion__toggle:focus-visible {
    outline: none;
    border-radius: var(--radius);
    box-shadow: 0 0 0 3px rgba(143, 166, 245, 0.35);
}
.card-accordion__chevron {
    flex-shrink: 0;
}
.card-accordion__chevron {
    width: 16px;
    height: 16px;
    color: var(--muted-2);
    transition: transform 220ms ease;
}
.card-accordion.is-collapsed .card-accordion__chevron {
    transform: rotate(-90deg);
}
.section-completion {
    flex-shrink: 0;
    margin-left: auto;
    display: flex;
    align-items: center;
    color: var(--faint);
}
.section-completion__icon {
    width: 18px;
    height: 18px;
}
.section-completion__icon circle {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    transition: fill 160ms ease, stroke 160ms ease;
}
.section-completion__icon path {
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke 160ms ease;
}
.section-completion.is-complete {
    color: var(--success);
}
.section-completion.is-complete .section-completion__icon circle {
    fill: var(--success);
}
.section-completion.is-complete .section-completion__icon path {
    stroke: var(--bg);
}
.card-accordion > h3 {
    padding-bottom: 0;
    border-bottom: none;
    transition: padding-bottom 220ms ease;
}
.card-accordion:not(.is-collapsed) > h3 {
    padding-bottom: 10px;
    border-bottom: 0.5px solid var(--line);
}
.card-accordion__panel {
    display: grid;
    grid-template-rows: 1fr;
    transition: grid-template-rows 220ms ease, visibility 0s;
}
.card-accordion.is-collapsed .card-accordion__panel {
    grid-template-rows: 0fr;
    visibility: hidden;
    transition: grid-template-rows 220ms ease, visibility 0s linear 220ms;
}
.card-accordion__panel > .card-content {
    min-height: 0;
    overflow: hidden;
    padding: 12px 0 4px;
}
/* Segmented choice picker (legal status): joined pill segments,
   native radios visually hidden but still keyboard operable. */
.choice-segment > div {
    display: flex;
    margin: 0;
}
.choice-segment > div > div {
    flex: 1;
}
.choice-segment label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
    background: var(--card);
    border: 0.5px solid var(--line-strong);
    color: var(--muted);
    font-size: 14px;
    line-height: 1.25;
    text-align: center;
    cursor: pointer;
    user-select: none;
    border-radius: 0;
    transition: background-color 160ms ease, color 160ms ease;
}
.choice-segment > div > div:first-child label {
    border-radius: var(--radius) 0 0 var(--radius);
}
.choice-segment > div > div:last-child label {
    border-radius: 0 var(--radius) var(--radius) 0;
}
.choice-segment > div > div + div label {
    margin-left: -0.5px;
}
.choice-segment label:has(input:checked) {
    position: relative;
    z-index: 1;
    background: color-mix(in srgb, var(--accent) 15%, var(--card));
    border-color: var(--accent-on-dark);
    color: var(--accent-on-dark);
}
.choice-segment label:has(input:focus-visible) {
    box-shadow: 0 0 0 3px rgba(143, 166, 245, 0.35);
}
.choice-segment input[type="radio"] {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: 0;
    opacity: 0;
    pointer-events: none;
}
/* Toggle switches on the dark page: softer "on" state matching the
   segmented choices (blue-tinted track + accent hairline instead of solid blue). */
.optimizer-page .toggle-switch input[type="checkbox"]:checked + .toggle-slider {
    background-color: color-mix(in srgb, var(--accent) 15%, var(--card));
    border-color: var(--accent-on-dark);
}
.optimizer-page .toggle-switch input[type="checkbox"]:focus + .toggle-slider {
    box-shadow: 0 0 0 3px rgba(143, 166, 245, 0.35);
}
.optimizer-page .form-submit-section {
    margin-top: 12px;
    padding-bottom: env(safe-area-inset-bottom);
}
#simulation-results,
#optimization-progress,
.optimizer-forms :is(input, select, textarea) {
    scroll-margin-top: calc(var(--hint-workspace-header-height) + 24px);
}
.workspace-skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    padding: 12px 16px;
    background: var(--card);
    color: var(--accent);
    border: 0.5px solid var(--accent);
    z-index: 1;
}
.workspace-skip-link:focus {
    top: 16px;
}
@media (max-width: 1199px) {
    .optimizer-page {
        --hint-workspace-header-height: 132px;
    }

    .optimizer-header .header-container {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .optimizer-header .header-left {
        min-height: 64px;
        border-right: none;
    }

    .optimizer-toolbar {
        grid-column: 1 / -1;
        grid-row: 2;
        padding: 12px 24px;
        border-top: 0.5px solid var(--line);
    }
}
@media (max-width: 600px) {
    .optimizer-page {
        --hint-workspace-header-height: 168px;
    }
    .optimizer-header .header-left {
        padding-inline: 16px;
    }
    .optimizer-header .header-right {
        padding-right: 16px;
    }
    .optimizer-toolbar-actions .hint-storage-save-trigger,
    .optimizer-toolbar > .btn-cta-floating {
        padding-inline: 10px;
        font-size: 13px;
    }
    .optimizer-toolbar {
        flex-wrap: wrap;
        gap: 12px;
        padding: 12px 16px;
    }
    .optimizer-forms,
    .optimizer-results {
        padding: 24px 16px;
    }
}
.optimizer-empty {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 14px;
    padding: 32px 18px;
    background: transparent;
    border: none;
    min-height: 520px;
    min-height: max(
        520px,
        calc(
            100vh -
            var(--hint-header-height, 72px) -
            var(--hint-footer-height, 96px) -
            56px
        )
    );
}
/* Inline SVG drawn with tokens; it follows the theme without any filter */
.optimizer-empty__illustration {
    width: min(520px, 92%);
    height: auto;
}
.optimizer-empty__title {
    margin: 0;
}
.optimizer-empty__text {
    margin: 0;
    color: var(--muted);
    max-width: 56ch;
}
.optimizer-page .form-submit-section {
    background: transparent;
}
@media (min-width: 1800px) {
    .header-container {
        max-width: 1600px;
        width: 100%;
        margin: 0 auto;
    }
}
/* Form title optional label */
.form-title-optional {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    color: var(--faint);
}
/* Header user menu spacing (optimizer page) */
.header-right .user-menu {
    margin-right: 15px;
}
.constraints-list {
    margin-top: 15px;
}
.modal-footer--spaced {
    margin-top: 16px;
}
