/* --- Fonts (Local IBM Plex Sans & Mono) --- */
@font-face {
    font-family: 'IBM Plex Sans';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/ibm-plex-sans-regular.woff2') format('woff2');
}

@font-face {
    font-family: 'IBM Plex Sans';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../fonts/ibm-plex-sans-medium.woff2') format('woff2');
}

@font-face {
    font-family: 'IBM Plex Sans';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/ibm-plex-sans-semibold.woff2') format('woff2');
}

@font-face {
    font-family: 'IBM Plex Sans';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../fonts/ibm-plex-sans-bold.woff2') format('woff2');
}

@font-face {
    font-family: 'IBM Plex Mono';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/ibm-plex-mono-regular.woff2') format('woff2');
}

@font-face {
    font-family: 'IBM Plex Mono';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../fonts/ibm-plex-mono-semibold.woff2') format('woff2');
}

/* --- Design Tokens & Color Schemes --- */
:root {
    color-scheme: light dark;
    --page: #F2F4F7;
    --sheet: #FFFFFF;
    --ink: #16202B;
    --ink-soft: #5A6877;
    --line: #D5DBE2;
    --cobalt: #2A4BD7;
    --cobalt-hover: #1D3BB8;
    --cobalt-subtle: rgba(42, 75, 215, 0.08);
    --brand-accent: #9A6E22;

    --fits: #1E7F57;
    --fits-bg: rgba(30, 127, 87, 0.1);
    --near: #975A16;
    --near-bg: rgba(183, 121, 31, 0.1);
    --over: #B93A2B;
    --over-bg: rgba(185, 58, 43, 0.1);

    --radius-control: 4px;
    --radius-panel: 8px;

    --font-sans: 'IBM Plex Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --page: #0F141A;
        --sheet: #171E26;
        --ink: #E8ECF1;
        --ink-soft: #9AA7B4;
        --line: #2A343F;
        --cobalt: #7C95FF;
        --cobalt-hover: #9BB0FF;
        --cobalt-subtle: rgba(124, 149, 255, 0.12);
        --brand-accent: #D9A54A;

        --fits: #4ade80;
        --near: #fcd34d;
        --over: #f87171;
        --fits-bg: rgba(30, 127, 87, 0.2);
        --near-bg: rgba(183, 121, 31, 0.2);
        --over-bg: rgba(185, 58, 43, 0.2);
    }
}

[data-theme="dark"] {
    --page: #0F141A;
    --sheet: #171E26;
    --ink: #E8ECF1;
    --ink-soft: #9AA7B4;
    --line: #2A343F;
    --cobalt: #7C95FF;
    --cobalt-hover: #9BB0FF;
    --cobalt-subtle: rgba(124, 149, 255, 0.12);
    --brand-accent: #D9A54A;

    --fits: #4ade80;
    --near: #fcd34d;
    --over: #f87171;
    --fits-bg: rgba(30, 127, 87, 0.2);
    --near-bg: rgba(183, 121, 31, 0.2);
    --over-bg: rgba(185, 58, 43, 0.2);
}

[data-theme="light"] {
    --page: #F2F4F7;
    --sheet: #FFFFFF;
    --ink: #16202B;
    --ink-soft: #5A6877;
    --line: #D5DBE2;
    --cobalt: #2A4BD7;
    --cobalt-hover: #1D3BB8;
    --cobalt-subtle: rgba(42, 75, 215, 0.08);
    --brand-accent: #9A6E22;

    --fits-bg: rgba(30, 127, 87, 0.1);
    --near-bg: rgba(183, 121, 31, 0.1);
    --over-bg: rgba(185, 58, 43, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

*:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--line) transparent;
}

*::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

*::-webkit-scrollbar-track {
    background: transparent;
}

*::-webkit-scrollbar-thumb {
    background: var(--line);
    border-radius: 3px;
}

*::-webkit-scrollbar-thumb:hover {
    background: var(--ink-soft);
}

html, body {
    width: 100%;
    min-height: 100dvh;
    background-color: var(--page);
    color: var(--ink);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.45;
    -webkit-font-smoothing: antialiased;
    /* clip, not hidden: hidden makes body a scroll container, which breaks the sticky header and status bar. */
    overflow-x: clip;
}

/* Container */
.app-container {
    width: 100%;
    max-width: 1800px;
    margin: 0 auto;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    background-color: var(--page);
}

/* Header Bar */
.header-bar {
    background: var(--sheet);
    border-bottom: 1px solid var(--line);
    padding: 0.6rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 20;
}

.brand-With-Switcher {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--ink);
}

a.brand-home {
    text-decoration: none;
}

.brand-accent {
    color: var(--brand-accent);
}

.page-tabs {
    display: inline-flex;
    background: var(--page);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 2px;
    gap: 2px;
}

.page-tabs a {
    text-decoration: none;
    color: var(--ink-soft);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.25rem 0.65rem;
    border-radius: calc(var(--radius-control) - 2px);
    transition: background 0.15s ease, color 0.15s ease;
}

.page-tabs a:hover {
    color: var(--ink);
}

.page-tabs a.active,
.page-tabs a[aria-current="page"] {
    background: var(--sheet);
    color: var(--cobalt);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.brand-group svg {
    color: var(--cobalt);
    flex-shrink: 0;
}

.brand-title {
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: -0.01em;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.step-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--ink-soft);
}

.step-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-control);
}

.step-item.active {
    font-weight: 600;
    color: var(--cobalt);
    background: var(--cobalt-subtle);
}

.step-chevron {
    color: var(--line);
}

.rate-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--page);
    border: 1px solid var(--line);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-control);
}

.rate-normal { color: var(--fits); }
.rate-warning { color: var(--near); }
.rate-critical { color: var(--over); }

/* Source / Input Bar */
.source-bar {
    background: var(--sheet);
    border-bottom: 1px solid var(--line);
    padding: 0.75rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.source-form {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.repo-input-wrapper {
    flex: 1 1 320px;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.input-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.input-row input[type="text"],
.input-row input[type="password"],
.input-row input[type="number"],
.input-row select {
    background: var(--sheet);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 0.5rem 0.75rem;
    color: var(--ink);
    font-size: 0.9375rem;
    font-family: inherit;
    width: 100%;
}

.input-row input:focus, .input-row select:focus {
    border-color: var(--cobalt);
}

.field-helper {
    font-size: 0.8125rem;
    color: var(--ink-soft);
    max-inline-size: 70ch;
}

.inline-error {
    font-size: 0.8125rem;
    color: var(--over);
    display: none;
    margin-top: 0.2rem;
}

.branch-token-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.options-toggle-btn {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--ink-soft);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-control);
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    max-width: 100%;
}

.options-toggle-btn span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 220px;
}

.options-toggle-btn:hover {
    color: var(--ink);
    border-color: var(--ink-soft);
}

.settings-group-header {
    border-top: 1px solid var(--line);
    padding-top: 0.75rem;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ink-soft);
}

/* Target Bar Segmented Control */
.target-bar {
    background: var(--sheet);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.target-bar-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink-soft);
    margin-right: 0.25rem;
}

.target-bar button {
    background: var(--page);
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 0.35rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--radius-control);
    cursor: pointer;
    transition: all 0.15s ease;
}

.target-bar button:hover {
    border-color: var(--cobalt);
    color: var(--cobalt);
}

.target-bar button[aria-pressed="true"] {
    background: var(--cobalt);
    border-color: var(--cobalt);
    color: var(--on-cobalt);
}

/* Options Drawer */
.options-drawer {
    display: none;
    background: var(--page);
    border-bottom: 1px solid var(--line);
    padding: 1rem 1.25rem;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.options-drawer.open {
    display: grid;
}

.option-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.option-field[hidden], .budget-presets[hidden] {
    display: none !important;
}

.option-field.full-width {
    grid-column: 1 / -1;
}

.option-field label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink);
}

.option-field input, .option-field select {
    background: var(--sheet);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 0.45rem 0.6rem;
    color: var(--ink);
    font-size: 0.875rem;
}

.field-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.char-count {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--ink-soft);
}

.instructions-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.35rem;
}

.preset-buttons {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.preset-label {
    font-size: 0.75rem;
    color: var(--ink-soft);
    margin-right: 0.2rem;
}

#aiInstructions {
    width: 100%;
    background: var(--sheet);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 0.5rem 0.65rem;
    color: var(--ink);
    font-size: 0.875rem;
    font-family: var(--font-sans);
    resize: vertical;
    min-height: 70px;
}

#aiInstructions:focus {
    border-color: var(--cobalt);
}

/* Persistent Warning Banner */
.persistent-warning-banner {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.65rem 1rem;
    background: #fff8e6;
    border-bottom: 1px solid #ffd591;
    color: #873800;
    font-size: 0.8125rem;
    line-height: 1.4;
    animation: fadeIn 0.2s ease-in-out;
}

[data-theme="dark"] .persistent-warning-banner {
    background: #2b2111;
    border-bottom: 1px solid #594214;
    color: #ffc069;
}

.persistent-warning-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
}

.persistent-warning-actions {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-shrink: 0;
}

/* Output Build Summary Card */
.summary-card {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 0.85rem 1.15rem;
    background: var(--page);
    border-bottom: 1px solid var(--line);
    animation: fadeIn 0.2s ease-in-out;
    font-size: 0.875rem;
    color: var(--ink);
    line-height: 1.45;
}

.summary-card[hidden] {
    display: none;
}

.summary-card div {
    font-weight: 500;
}

/* Secrets Warning Panel */
.secrets-warning-panel {
    background: var(--over-bg);
    border-bottom: 2px solid var(--over);
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.secrets-warning-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.secrets-warning-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: var(--over);
    font-size: 0.875rem;
}

.secrets-list-wrapper {
    max-height: 160px;
    overflow-y: auto;
    overflow-x: auto;
    max-width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--sheet);
}

.secrets-table {
    width: 100%;
    min-width: 480px;
    border-collapse: collapse;
    font-size: 0.78125rem;
    text-align: left;
}

.secrets-table th, .secrets-table td {
    padding: 0.35rem 0.6rem;
    border-bottom: 1px solid var(--line);
}

.secrets-table th {
    background: var(--page);
    font-weight: 600;
    color: var(--ink);
    position: sticky;
    top: 0;
    z-index: 1;
}

.secrets-table td {
    font-family: var(--font-mono);
    color: var(--ink);
    word-break: break-all;
}

.secrets-help-text {
    font-size: 0.75rem;
    color: var(--ink-soft);
    margin-top: 0.2rem;
}

/* Budget Meter Banner */
.budget-banner {
    background: var(--sheet);
    border-bottom: 1px solid var(--line);
    padding: 0.85rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.budget-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.budget-numbers {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.budget-hero-number {
    font-size: 2.25rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--ink);
    line-height: 1;
}

.budget-target-label {
    font-size: 0.9375rem;
    color: var(--ink-soft);
}

.budget-presets {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.preset-btn {
    background: var(--page);
    border: 1px solid var(--line);
    color: var(--ink);
    border-radius: var(--radius-control);
    padding: 0.25rem 0.5rem;
    font-size: 0.78125rem;
    font-family: var(--font-mono);
    cursor: pointer;
}

.preset-btn:hover {
    border-color: var(--cobalt);
    color: var(--cobalt);
}

.budget-track {
    background: var(--page);
    border: 1px solid var(--line);
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.budget-fill {
    height: 100%;
    width: 0%;
    transition: width 0.3s ease, background-color 0.3s ease;
    background-color: var(--fits);
}

.budget-fill.fits { background-color: var(--fits); }
.budget-fill.near { background-color: var(--near); }
.budget-fill.over { background-color: var(--over); }

.budget-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--ink-soft);
}

.budget-status-text {
    font-weight: 600;
}

.status-fits { color: var(--fits); }
.status-near { color: var(--near); }
.status-over { color: var(--over); }

.budget-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
}

.budget-suggestions:empty {
    display: none;
}

.budget-suggestions button {
    background: var(--page);
    border: 1px solid var(--line);
    color: var(--ink);
    border-radius: var(--radius-control);
    padding: 0.25rem 0.5rem;
    font-size: 0.78125rem;
    cursor: pointer;
}

.budget-suggestions button:hover {
    border-color: var(--cobalt);
    color: var(--cobalt);
}

#defaultsNote {
    margin: 0.4rem 0.85rem;
    font-size: 0.8125rem;
    color: var(--ink-soft);
}

#defaultsNote button {
    margin-left: 0.35rem;
    background: none;
    border: none;
    padding: 0;
    font-size: 0.8125rem;
    color: var(--cobalt);
    text-decoration: underline;
    cursor: pointer;
}

#defaultsNote button:hover {
    color: var(--ink);
}

/* Layout Panes (Desktop 2-pane, Tablet stack, Mobile single pane) */
.workspace-panes {
    display: grid;
    grid-template-columns: minmax(320px, 38%) 1fr;
    flex: 1;
    overflow: hidden;
    gap: 1px;
    background: var(--line);
}

.pane {
    background: var(--sheet);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.pane-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--line);
    background: var(--sheet);
    min-height: 44px;
    gap: 0.5rem;
}

.pane-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--ink);
}

/* Tree Controls & Search */
.tree-search-bar {
    padding: 0.5rem 0.85rem;
    border-bottom: 1px solid var(--line);
    background: var(--sheet);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1;
}

.search-icon {
    position: absolute;
    left: 0.6rem;
    color: var(--ink-soft);
    pointer-events: none;
}

.search-input-wrapper input {
    width: 100%;
    padding: 0.4rem 0.6rem 0.4rem 2rem;
    font-size: 0.875rem;
    background: var(--page);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    color: var(--ink);
}

.search-count {
    font-size: 0.8125rem;
    font-family: var(--font-mono);
    color: var(--ink-soft);
    white-space: nowrap;
}

.tree-toolbar {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.85rem;
    border-bottom: 1px solid var(--line);
    background: var(--sheet);
    flex-wrap: wrap;
}

.threshold-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: auto;
}

.threshold-group input {
    width: 52px;
    padding: 0.2rem 0.35rem;
    font-size: 0.8125rem;
    font-family: var(--font-mono);
    text-align: center;
    background: var(--page);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    color: var(--ink);
}

.tree-viewport {
    flex: 1;
    overflow-y: auto;
    position: relative;
    background: var(--sheet);
}

.warning-banner {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--line);
    font-size: 0.8125rem;
}

.banner-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm, 4px);
    font-size: 0.8125rem;
    line-height: 1.4;
}

.banner-item.warn {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fde68a;
}

.banner-item.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

[data-theme="dark"] .banner-item.warn {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

[data-theme="dark"] .banner-item.error {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.tree-container-box {
    padding: 0.5rem 0.85rem;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

/* Tree Components & Row Styling */
.tree-root, .tree-children {
    list-style: none;
    padding-left: 1rem;
    margin: 1px 0;
}

.tree-root {
    padding-left: 0;
}

.tree-item {
    margin: 1px 0;
}

.tree-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.4rem;
    min-height: 32px;
    border-radius: var(--radius-control);
    cursor: pointer;
    user-select: none;
    position: relative;
}

.tree-row:hover {
    background-color: var(--cobalt-subtle);
}

.tree-row:focus-visible {
    outline: 2px solid var(--cobalt);
    outline-offset: -1px;
}

.tree-checkbox {
    cursor: pointer;
    accent-color: var(--cobalt);
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.tree-toggle-btn {
    background: transparent;
    border: none;
    color: var(--ink-soft);
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 3px;
    flex-shrink: 0;
}

.tree-toggle-btn:hover {
    color: var(--ink);
    background: var(--line);
}

.tree-folder-label, .tree-file-label {
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
    flex: 1 1 auto;
}

.tree-folder-label {
    font-weight: 600;
}

.svg-icon {
    color: var(--ink-soft);
    flex-shrink: 0;
}

.tree-folder-label .svg-icon {
    color: var(--cobalt);
}

.tree-weight-bar-bg {
    margin-left: auto;
    width: 60px;
    height: 6px;
    background: var(--page);
    border-radius: 3px;
    overflow: hidden;
    flex-shrink: 0;
}

.tree-weight-bar-fill {
    height: 100%;
    background: var(--cobalt);
    border-radius: 3px;
}

.tree-weight-bar-fill.near {
    background: var(--near);
}

.tree-size-badge {
    font-size: 0.75rem;
    color: var(--ink-soft);
    font-family: var(--font-mono);
    margin-left: 0.4rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.tree-large-badge {
    color: var(--near);
    font-weight: 600;
}

.pane-footer {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--line);
    background: var(--sheet);
}

/* Output Pane & Preview */
.output-viewport {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    background: var(--sheet);
}

.preview-notice {
    padding: 0.4rem 0.85rem;
    background: var(--page);
    border-bottom: 1px solid var(--line);
    font-size: 0.78125rem;
    color: var(--ink-soft);
    display: none;
}

textarea.preview {
    flex: 1;
    width: 100%;
    height: 100%;
    min-height: 250px;
    background: var(--sheet);
    border: none;
    color: var(--ink);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    padding: 0.85rem;
    resize: none;
    white-space: pre;
    line-height: 1.5;
}

textarea.preview.wrap {
    white-space: pre-wrap;
    word-break: break-word;
}

/* Buttons */
button {
    cursor: pointer;
    border: 1px solid transparent;
    border-radius: var(--radius-control);
    padding: 0.5rem 0.85rem;
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    font-family: var(--font-sans);
    white-space: nowrap;
}

button.primary {
    background-color: var(--cobalt);
    color: var(--on-cobalt);
}

button.primary:hover:not(:disabled) {
    background-color: var(--cobalt-hover);
}

button.secondary {
    background-color: var(--sheet);
    border-color: var(--line);
    color: var(--ink);
}

button.secondary:hover:not(:disabled) {
    background-color: var(--page);
    border-color: var(--ink-soft);
}

button.danger {
    background-color: var(--over);
    color: var(--on-over);
}

button.btn-full {
    width: 100%;
}

button.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.8125rem;
}

button.btn-xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Activity Log Section */
.log-card {
    background: var(--sheet);
    border-top: 1px solid var(--line);
    padding: 0.5rem 1.25rem;
}

.log-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
}

.log-summary-text {
    font-size: 0.8125rem;
    color: var(--ink-soft);
    font-family: var(--font-mono);
}

.progress-track {
    background-color: var(--page);
    border: 1px solid var(--line);
    height: 6px;
    border-radius: 3px;
    overflow: hidden;
    margin-top: 0.4rem;
    display: none;
}

.progress-fill {
    height: 100%;
    background-color: var(--cobalt);
    width: 0%;
    transition: width 0.15s ease;
}

#log {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--ink-soft);
    height: 100px;
    overflow-y: auto;
    white-space: pre-wrap;
    display: none;
    background: var(--page);
    padding: 0.5rem;
    border-radius: var(--radius-control);
    border: 1px solid var(--line);
    margin-top: 0.4rem;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 200px;
    padding: 2rem;
    text-align: center;
    color: var(--ink-soft);
    gap: 0.75rem;
}

.empty-state svg {
    color: var(--line);
}

.empty-state p {
    font-size: 0.875rem;
    max-width: 280px;
    line-height: 1.4;
}

/* Toast Notification (Aria-Live Region) */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    background: var(--ink);
    color: var(--sheet);
    padding: 0.6rem 1rem;
    border-radius: var(--radius-control);
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: auto;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* Segmented Control (Mobile Pane Switcher) */
.segmented-control {
    display: none;
    background: var(--page);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 2px;
    margin: 0.5rem 1rem;
}

.segmented-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--ink-soft);
    padding: 0.4rem 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: calc(var(--radius-control) - 2px);
    cursor: pointer;
}

.segmented-btn.active {
    background: var(--sheet);
    color: var(--ink);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Mobile Sticky Action Bar */
.sticky-action-bar {
    display: none;
    position: sticky;
    bottom: 0;
    z-index: 30;
    background: var(--sheet);
    border-top: 1px solid var(--line);
    padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom, 0px));
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

/* --- Responsive & Touch Layouts --- */

@media (max-width: 1099.98px) {
    .workspace-panes {
        grid-template-columns: 1fr;
    }

    .pane {
        height: auto;
        min-height: 380px;
    }
}

@media (max-width: 720px) {
    .header-bar {
        padding: 0.5rem 1rem;
        flex-wrap: wrap;
    }

    .page-tabs a {
        padding: 0.25rem 0.5rem;
    }

    .step-indicator {
        display: none;
    }

    .source-bar {
        padding: 0.6rem 1rem;
    }

    .segmented-control {
        display: flex;
    }

    .workspace-panes {
        display: block;
    }

    .pane {
        display: none;
    }

    .pane.active-mobile {
        display: flex;
    }

    .sticky-action-bar {
        display: block;
    }

    .workspace-panes,
    .pane.active-mobile {
        padding-bottom: 72px;
    }

    .pane-footer {
        display: none; /* Handled by sticky bottom action bar on mobile */
    }

    #optionsDrawer.open {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        max-height: 80vh;
        overflow-y: auto;
        background: var(--sheet);
        border-top: 2px solid var(--line);
        box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.25);
        z-index: 100;
        display: flex;
        flex-direction: column;
        padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    }

    .drawer-done-btn {
        display: inline-flex !important;
        margin-top: 0.5rem;
    }

    button, select, input {
        min-height: 44px;
    }

    button.btn-xs, button.btn-sm, .preset-btn {
        min-height: 44px;
        padding-top: 0.4rem;
        padding-bottom: 0.4rem;
    }

    .tree-row {
        min-height: 44px;
    }

    .tree-checkbox {
        width: 22px;
        height: 22px;
    }

    .tree-toggle-btn {
        width: 36px;
        height: 36px;
    }
}

@media (pointer: coarse) {
    button, input, select, .tree-row {
        min-height: 44px;
    }

    .tree-checkbox {
        width: 22px;
        height: 22px;
    }

    .tree-toggle-btn {
        width: 32px;
        height: 32px;
    }

    input, select {
        font-size: 16px; /* Avoid iOS Safari zoom */
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .toast {
        transform: none !important;
        transition: none !important;
    }
}

/* --- PR 03: Simple first screen & Token on Demand --- */
#heroBlock {
    display: none;
}

.is-empty #heroBlock {
    display: block;
}

.hero-block {
    max-width: 680px;
    margin: 1.5rem auto 1rem auto;
    padding: 0 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.hero-block h2 {
    font-size: 1.35rem;
    line-height: 1.3;
    font-weight: 600;
    color: var(--ink);
}

.hero-block p {
    font-size: 0.9375rem;
    color: var(--ink-soft);
    line-height: 1.45;
}

.example-repos {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--ink-soft);
    margin-top: 0.3rem;
}

.example-repos span {
    font-weight: 500;
    margin-right: 0.15rem;
}

.example-repos button {
    appearance: none;
    background: var(--sheet);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 0.25rem 0.55rem;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.78125rem;
    color: var(--ink);
    transition: all 0.15s ease;
}

.example-repos button:hover {
    background: var(--cobalt-subtle);
    border-color: var(--cobalt);
    color: var(--cobalt);
}

/* While .is-empty, hide secondary and workspace elements */
.is-empty .branch-token-group,
.is-empty #optionsToggleBtn,
.is-empty #targetBar,
.is-empty .budget-banner,
.is-empty .log-card,
.is-empty .segmented-control,
.is-empty .workspace-panes,
.is-empty #stickyActionBar,
.is-empty .step-indicator,
.is-empty #step1,
.is-empty #step2,
.is-empty #step3 {
    display: none !important;
}

/* Token on demand panel */
.token-panel {
    margin-top: 0.6rem;
    padding: 0.75rem 0.85rem;
    background: var(--page);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.token-panel[hidden] {
    display: none !important;
}

.token-panel-message {
    font-size: 0.8125rem;
    color: var(--over);
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.token-panel-message:empty {
    display: none;
}

.token-panel label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink);
}

.token-panel input {
    background: var(--sheet);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    padding: 0.45rem 0.6rem;
    color: var(--ink);
    font-size: 0.875rem;
    max-width: 320px;
}

.token-panel .field-helper {
    font-size: 0.75rem;
    color: var(--ink-soft);
    line-height: 1.4;
    max-width: 580px;
}

/* Local .zip loading */
.zip-source-note {
    color: var(--cobalt);
    font-weight: 600;
}

.hero-zip-hint {
    font-size: 0.8125rem;
    color: var(--ink-soft);
}

body.zip-drag-over::after {
    content: 'Drop the .zip to load it';
    position: fixed;
    inset: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--cobalt);
    border-radius: var(--radius-control);
    background: var(--cobalt-subtle);
    color: var(--cobalt);
    font-weight: 700;
    font-size: 1.125rem;
    pointer-events: none;
    z-index: 1000;
}

/* Four page tabs: on phones the share button keeps only its icon. */
@media (max-width: 480px) {
    #shareUrlBtn span {
        display: none;
    }

    /* Keep the theme and share buttons beside the title instead of on a row of their own. */
    .header-controls {
        position: absolute;
        top: 0.5rem;
        right: 1rem;
    }
}

/* One-time notice before the first request to GitHub / deps.dev (js/first-use.js) */
.first-use-dialog {
    margin: auto; /* the global reset removes the browser's centring */
    max-width: 30rem;
    width: calc(100% - 2rem);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    background: var(--sheet);
    color: var(--ink);
    padding: 1.25rem 1.35rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}
.first-use-dialog::backdrop { background: rgba(16, 22, 28, 0.55); }
.first-use-dialog h2 { margin: 0 0 0.75rem; font-size: 1.1rem; }
.first-use-dialog p { margin: 0 0 0.7rem; font-size: 0.9rem; color: var(--ink-soft); line-height: 1.5; }
.first-use-dialog a { color: var(--cobalt); }
.first-use-accept { display: flex; gap: 0.5rem; align-items: flex-start; font-size: 0.9rem; margin: 0.9rem 0 1rem; cursor: pointer; }
.first-use-accept input { margin-top: 0.2rem; }
.first-use-actions { display: flex; justify-content: flex-end; gap: 0.5rem; }
.first-use-actions button:disabled { opacity: 0.5; cursor: default; }

/* Dependencies: what is and isn't checked */
.deps-limits { margin: 0.25rem 0 0.75rem; font-size: 0.8125rem; color: var(--ink-soft); }
.deps-limits summary { cursor: pointer; color: var(--cobalt); font-weight: 600; }
.deps-limits ul { margin: 0.5rem 0 0; padding-left: 1.1rem; display: grid; gap: 0.3rem; }
.deps-limits strong { color: var(--ink); }

/* --- Workspace layout, status bar and loading states ---------------------------------------
 * The controls sit on a white sheet under the header; the work area below is grey, with each
 * section (topics, budget, the two panes) as its own card. On desktop the panes fill the
 * viewport and scroll inside, so a pane's main button (Build context) stays on screen. The
 * status bar stays at the bottom of the window and appears as soon as anything starts loading.
 */
:root {
    --header-h: 49px;
    --status-h: 46px;
    --pane-head: #F6F7F9;
    --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.05);
    /* Text on a cobalt or red fill: white on the light theme's dark fills, near-black on the dark theme's light ones. */
    --on-cobalt: #FFFFFF;
    --on-over: #FFFFFF;
}
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) { --pane-head: #1C242D; --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.45); --on-cobalt: #0B1020; --on-over: #1F0707; }
}
[data-theme="dark"] { --pane-head: #1C242D; --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.45); --on-cobalt: #0B1020; --on-over: #1F0707; }
[data-theme="light"] { --on-cobalt: #FFFFFF; --on-over: #FFFFFF; --pane-head: #F6F7F9; --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.05); }

.source-bar, .target-bar { box-shadow: none; }
.budget-banner, .nlp-banner {
    margin: 0.75rem 1.25rem 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-panel);
    box-shadow: var(--shadow-card);
}
.workspace-panes {
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: var(--page);
}
.pane {
    border: 1px solid var(--line);
    border-radius: var(--radius-panel);
    box-shadow: var(--shadow-card);
}
.pane-header { background: var(--pane-head); }
.pane-title { font-size: 1rem; }
.pane-footer { background: var(--pane-head); }

@media (min-width: 1100px) {
    .workspace-panes {
        height: calc(100dvh - var(--header-h) - var(--status-h));
        min-height: 540px;
        grid-template-rows: minmax(0, 1fr);
        flex: none; /* as a flex item it would otherwise grow to its content's height */
    }
    .pane { height: 100%; min-height: 0; }
}

/* Status bar */
.log-card {
    position: sticky;
    bottom: 0;
    z-index: 15;
    min-height: var(--status-h);
    box-shadow: 0 -2px 8px rgba(16, 24, 40, 0.06);
}
body.is-busy .log-card { display: block !important; }
.log-summary-text { display: inline-flex; align-items: center; gap: 0.5rem; }
.log-card.is-busy .log-summary-text { color: var(--ink); }

@keyframes gd-spin { to { transform: rotate(360deg); } }
@keyframes gd-slide { from { transform: translateX(-110%); } to { transform: translateX(310%); } }

.log-card.is-busy .log-summary-text::before,
button.is-loading::before,
.nlp-banner.is-pending #nlpMetaBadge::before,
.loading-spinner {
    content: '';
    display: inline-block;
    flex: none;
    width: 0.9em;
    height: 0.9em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: gd-spin 0.7s linear infinite;
}
button.is-loading:disabled { opacity: 0.85; cursor: progress; }

.progress-track.indeterminate .progress-fill {
    width: 32%;
    animation: gd-slide 1.15s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
    .progress-track.indeterminate .progress-fill { width: 100%; opacity: 0.45; animation: none; }
}

.nlp-banner.is-pending #nlpMetaBadge { display: inline-flex; align-items: center; gap: 0.45rem; color: var(--cobalt); }

/* Phones: the bottom action bar is the sticky element; the status bar sits just above it while busy. */
@media (max-width: 720px) {
    .budget-banner, .nlp-banner { margin: 0.5rem 0.75rem 0; }
    .workspace-panes { padding: 0.5rem 0.75rem; }
    .log-card { position: static; }
    body.is-busy:not(.is-empty) .log-card {
        position: sticky;
        bottom: calc(68px + env(safe-area-inset-bottom, 0px));
    }
}

/* "Add a GitHub token" in the intro: a button that reads as a link. */
.link-btn {
    display: inline;
    padding: 0;
    border: none;
    background: none;
    color: var(--cobalt);
    font: inherit;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
    cursor: pointer;
    white-space: normal;
}
.link-btn:hover { color: var(--cobalt-hover); }
/* An inline text link inside a sentence: not stretched to the 44px touch size used for buttons. */
button.link-btn { min-height: 0 !important; padding: 0 !important; display: inline !important; font-size: inherit; }

/* Preview toolbar: "Wrap lines" only matters while the preview is open. */
.preview-toolbar { display: flex; align-items: center; gap: 0.5rem; padding: 0.5rem 0.85rem 0; }
.preview-toolbar #wrapToggleBtn { display: none; }
.preview-toolbar #togglePreviewBtn[aria-expanded="true"] ~ #wrapToggleBtn { display: inline-flex; }
.toggle-btn[aria-pressed="true"] { border-color: var(--cobalt); color: var(--cobalt); background: var(--cobalt-subtle); }
.toggle-btn[aria-pressed="true"]::before { content: '\2713'; font-weight: 700; }

/* Flex children must be allowed to shrink, or a long file list pushes the pane footer off screen. */
.tree-viewport, .output-viewport, .issues-list-viewport { min-height: 0; }

/* A warning that offers a fix ("Check the remaining 1,234") */
.banner-item .banner-action { margin-left: 0.6rem; vertical-align: middle; }
.empty-state .empty-action { margin-top: 0.6rem; }

/* Toasts sit above the pinned status bar (and above the phone action bar). */
.toast-container { bottom: calc(var(--status-h) + 0.9rem); }
@media (max-width: 720px) {
    .toast-container { bottom: calc(80px + env(safe-area-inset-bottom, 0px)); right: 0.75rem; left: 0.75rem; }
}
@media (max-width: 720px) {
    /* The output header (part picker and up to four buttons) wraps rather than running off screen. */
    .pane-header { flex-wrap: wrap; row-gap: 0.4rem; }
    .pane-header > div { flex-wrap: wrap; row-gap: 0.4rem; }
}

/* Status bar: "Report a problem" next to "Activity log" */
.log-actions { display: inline-flex; align-items: center; gap: 0.75rem; flex: none; }
.feedback-link { font-size: 0.75rem; color: var(--ink-soft); text-decoration: underline; text-underline-offset: 2px; }
.feedback-link:hover { color: var(--cobalt); }
@media (max-width: 480px) { .feedback-link { display: none; } }

/* After a load (body.has-results, js/ui-status.js showResults): the repo bar shrinks to one line,
   so the results are the first thing on screen. The repo field stays editable to switch repo. */
.workspace-section, #nlpBanner { scroll-margin-top: calc(var(--header-h) + 0.25rem); }
.has-results .source-bar { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.has-results .repo-input-wrapper > label[for="repoUrl"],
.has-results .repo-input-wrapper > p.field-helper.secondary-control { display: none; }
.has-results .branch-token-group label { display: none; }
.has-results .target-bar { padding-top: 0.35rem; padding-bottom: 0.35rem; }
@media (min-width: 900px) {
    .has-results .input-row { flex-wrap: nowrap; }
    .has-results .input-row input[type="text"] { width: auto; flex: 1 1 auto; min-width: 12rem; }
    .has-results .compare-row { margin-top: 0.35rem; }
}

/* Dependencies summary: counts that filter the package list when clicked */
.summary-filter {
    display: inline; padding: 0; min-height: 0 !important; border: none; background: none;
    font: inherit; font-weight: 600; color: var(--cobalt); cursor: pointer;
    text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 3px;
}
.summary-filter:hover { text-decoration-style: solid; }
.summary-filter[aria-pressed="true"] { background: var(--cobalt-subtle); border-radius: 3px; padding: 0 0.25rem; text-decoration-style: solid; }

/* After Copy: where to paste it (js/ui-actions.js) */
.copy-hint {
    display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
    padding: 0.55rem 1rem; border-bottom: 1px solid var(--line);
    background: var(--fits-bg); color: var(--ink); font-size: 0.875rem; font-weight: 600;
}
.copy-hint[hidden] { display: none; }
.copy-hint-link { font-weight: 700; color: var(--cobalt); }
.copy-hint-close { margin-left: auto; padding: 0 0.4rem; min-height: 0 !important; border: none; background: none; color: var(--ink-soft); font-size: 1.1rem; line-height: 1; }