/**
 * CMS Platform Dashboard
 * Styles for the /cms/ platform area — completely separate from instance admin styles.
 */

/* ── Variables — Cruinn brand ─────────────────────────────────── */
:root {
    --plat-dark: #0c1614;
    /* Cruinn dark (topbar, logo bg) */
    --plat-primary: #0c1614;
    /* headings, key text */
    --plat-accent: #1d9e75;
    /* Cruinn green — primary interactive */
    --plat-accent-lt: #5dcaa5;
    /* lighter teal — secondary accents */
    --plat-cream: #e8e4da;
    /* warm off-white — text on dark */
    --plat-text: #1a202c;
    --plat-text-light: #64748b;
    --plat-bg: #f2f5f3;
    /* warm green-tinted content bg */
    --plat-bg-card: #ffffff;
    --plat-border: #ccd9d3;
    /* green-tinted border */
    --plat-ok: #16a34a;
    --plat-err: #dc2626;
    --plat-radius: 8px;
    --plat-shadow: 0 1px 4px rgba(0, 0, 0, .08);
}

/* ── Base ─────────────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.platform-body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--plat-bg);
    color: var(--plat-text);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
}

/* ── Top Bar ──────────────────────────────────────────────────── */
.platform-bar {
    background: var(--plat-dark);
    color: var(--plat-cream);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .4);
    border-bottom: 1px solid rgba(29, 158, 117, .25);
}

.platform-bar-inner {
    padding: 0 1.5rem;
    height: 52px;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.platform-bar-brand {
    display: flex;
    align-items: baseline;
    gap: .5rem;
    white-space: nowrap;
}

.platform-bar-logo-text {
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 400;
    font-size: 1.1rem;
    letter-spacing: .12em;
    color: var(--plat-cream);
    line-height: 1;
}

.platform-bar-logo-ruinn {
    /* inherits from platform-bar-logo-text */
}

.platform-bar-logo-cms {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.1rem;
    letter-spacing: .12em;
    color: var(--plat-accent);
    line-height: 1;
}

.platform-bar-logo-fa {
    font-family: 'Space Mono', monospace;
    font-size: 0.55rem;
    letter-spacing: .2em;
    color: var(--plat-accent-lt);
    opacity: .8;
    text-transform: uppercase;
    margin-left: .4rem;
}

.platform-bar-right a {
    color: rgba(232, 228, 218, .75);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color .15s;
}

.platform-bar-right a:hover {
    color: var(--plat-accent-lt);
}

.platform-bar-right {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    font-size: 0.875rem;
}

.platform-bar-user {
    color: var(--plat-cream);
    opacity: .7;
}

/* ── Layout width toggle ─────────────────────────────────────── */
.platform-width-toggle {
    background: none;
    border: 1px solid rgba(255, 255, 255, .2);
    color: rgba(232, 228, 218, .55);
    font-size: 0.75rem;
    padding: 0.2rem 0.45rem;
    border-radius: 3px;
    cursor: pointer;
    line-height: 1;
    transition: color .15s, border-color .15s;
    font-family: inherit;
}

.platform-width-toggle:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, .45);
}

/* ── Wrap (max-width container) ─────────────────────────────── */
.platform-wrap {
    max-width: none;
    margin: 0;
    min-height: 100vh;
    display: flex;
    width: 100%;
}

/* Wide mode: remove outer constraint */
html.platform-layout-wide .platform-wrap {
    max-width: none;
    box-shadow: none;
}



/* ── Sidebar ─────────────────────────────────────────────────── */
.platform-sidebar {
    width: 220px;
    flex-shrink: 0;
    background: var(--plat-dark);
    display: flex;
    flex-direction: column;
    border-right: 1px solid rgba(29, 158, 117, .2);
}

.platform-sidebar-hero {
    padding: 1rem;
    border-bottom: 1px solid rgba(29, 158, 117, .15);
}

.platform-sidebar-hero a {
    display: block;
}

.platform-sidebar-hero img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 4px;
}

.platform-sidebar-wordmark {
    margin-top: .75rem;
    text-align: center;
}

.platform-sidebar-wm-name {
    display: block;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: .12em;
    color: var(--plat-cream);
    line-height: 1.2;
}

.platform-sidebar-wm-cms {
    color: var(--plat-accent);
}

.platform-sidebar-wm-fa {
    display: block;
    font-family: 'Space Mono', monospace;
    font-size: 0.5rem;
    letter-spacing: .2em;
    color: var(--plat-accent-lt);
    opacity: .75;
    text-transform: uppercase;
    margin-top: .2rem;
}

.platform-sidebar-nav {
    padding: 0.75rem 0;
    flex: 1;
    overflow-y: auto;
}

/* Top-level nav links (Dashboard, Settings) */
.platform-sidebar-nav>a {
    display: block;
    padding: .5rem 1.25rem;
    font-size: 0.875rem;
    color: rgba(232, 228, 218, .7);
    text-decoration: none;
    letter-spacing: .03em;
    text-align: right;
    border-right: 3px solid transparent;
    transition: color .15s, border-color .15s;
}

.platform-sidebar-nav>a:hover {
    color: var(--plat-cream);
    border-right-color: var(--plat-accent);
}

.platform-sidebar-nav>a.active {
    color: var(--plat-cream);
    border-right-color: var(--plat-accent);
}

/* Section label ("Files") */
.platform-nav-section-label {
    display: block;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(232, 228, 218, .3);
    padding: 1rem 1.25rem 0.35rem;
    text-align: right;
}

/* Collapseable group */
.platform-nav-group {
    border-top: 1px solid rgba(255, 255, 255, .04);
}

.platform-nav-group-btn {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: 100%;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem 0.5rem 0.75rem;
    background: none;
    border: none;
    border-right: 3px solid transparent;
    color: rgba(232, 228, 218, .65);
    font-size: 0.82rem;
    font-family: inherit;
    text-align: right;
    cursor: pointer;
    transition: color .15s, border-color .15s, background .15s;
}

.platform-nav-group-btn:hover {
    color: var(--plat-cream);
    background: rgba(255, 255, 255, .04);
}

.platform-nav-group-btn[aria-expanded="true"] {
    color: var(--plat-cream);
    border-right-color: var(--plat-accent);
    background: rgba(29, 158, 117, .07);
}

.pnav-group-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

.pnav-active-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--plat-accent);
    flex-shrink: 0;
}

.pnav-caret {
    font-size: 0.6rem;
    flex-shrink: 0;
    transition: transform .15s;
    color: rgba(232, 228, 218, .35);
}

.platform-nav-group-btn[aria-expanded="true"] .pnav-caret {
    transform: rotate(90deg);
    color: var(--plat-accent-lt);
}

/* File list inside a group */
.platform-nav-group-body {
    background: rgba(0, 0, 0, .15);
    padding: 0.25rem 0;
}

.platform-nav-file,
.platform-nav-instance {
    display: block;
    padding: 0.35rem 1.25rem 0.35rem 1rem;
    color: rgba(232, 228, 218, .65);
    text-decoration: none;
    border-right: 2px solid transparent;
    transition: background .12s, border-color .12s, color .12s;
}

.platform-nav-file:hover,
.platform-nav-instance:hover,
.platform-nav-instance.active {
    background: rgba(255, 255, 255, .05);
    border-right-color: var(--plat-accent-lt, #5dcaa5);
    color: var(--plat-cream);
    text-decoration: none;
}

.platform-nav-file.pnav-file-inactive {
    opacity: 0.4;
}

.pnav-file-title {
    display: block;
    font-size: 0.78rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: right;
}

.pnav-file-slug {
    display: block;
    font-size: 0.66rem;
    color: rgba(232, 228, 218, .3);
    text-align: right;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pnav-empty,
.pnav-loading,
.pnav-error {
    display: block;
    padding: 0.35rem 1.25rem;
    font-size: 0.72rem;
    text-align: right;
}

.pnav-empty {
    color: rgba(232, 228, 218, .3);
}

.pnav-loading {
    color: rgba(232, 228, 218, .4);
}

.pnav-error {
    color: #f87171;
}

.platform-sidebar-footer {
    margin-top: auto;
    padding: 1rem;
    border-top: 1px solid rgba(29, 158, 117, .15);
}

.platform-sidebar-instance {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--plat-cream);
    opacity: .75;
    margin-bottom: .2rem;
}

.platform-sidebar-url {
    font-size: 0.7rem;
    color: var(--plat-accent-lt);
    text-decoration: none;
    opacity: .6;
    word-break: break-all;
}

.platform-sidebar-url:hover {
    opacity: 1;
}

/* ── Right column ────────────────────────────────────────────── */
.platform-right {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.platform-main {
    flex: 1;
}

/* ── Content ──────────────────────────────────────────────────── */
.platform-content {
    width: 100%;
    padding: 2rem 1.5rem;
    box-sizing: border-box;
}

/* ── Page Header ──────────────────────────────────────────────── */
.platform-page-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.platform-page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--plat-primary);
}

/* ── Badges ───────────────────────────────────────────────────── */
.platform-badge {
    display: inline-block;
    background: var(--plat-border);
    color: var(--plat-text-light);
    font-size: 0.8rem;
    font-weight: 600;
    padding: .25rem .75rem;
    border-radius: 99px;
}

.platform-badge-single {
    background: #d0f0e6;
    color: #0c5c3e;
}

.platform-badge-multi {
    background: #dbeafe;
    color: #1e40af;
}

.platform-badge-active {
    background: var(--plat-accent);
    color: #fff;
    font-size: 0.7rem;
    padding: .15rem .55rem;
    border-radius: 99px;
    margin-left: .4rem;
    vertical-align: middle;
}

.platform-instance-folder {
    display: block;
    font-size: 0.8rem;
    color: var(--plat-text-light);
    margin-top: 0.2rem;
}

/* ── Sections ─────────────────────────────────────────────────── */
.platform-section {
    background: var(--plat-bg-card);
    border: 1px solid var(--plat-border);
    border-radius: var(--plat-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--plat-shadow);
}

.platform-section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: .75rem;
    border-bottom: 1px solid var(--plat-border);
}

.platform-section-header h2 {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--plat-text-light);
}

/* ── Instance Card ────────────────────────────────────────────── */
.platform-instance-card {
    background: var(--plat-bg-card);
    border: 1px solid var(--plat-border);
    border-radius: var(--plat-radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1rem;
}

.platform-instance-card.instance-active {
    border-left: 4px solid var(--plat-ok);
}

.platform-instance-card.instance-inactive {
    border-left: 4px solid var(--plat-text-light);
    opacity: 0.85;
}

.platform-instance-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.platform-instance-name {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--plat-primary);
}

.platform-instance-url {
    font-size: 0.875rem;
    color: var(--plat-accent);
    text-decoration: none;
}

.platform-instance-url:hover {
    text-decoration: underline;
}

.platform-instance-actions {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
}

.platform-instance-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem 1.5rem;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
}

.platform-meta-item {
    display: flex;
    align-items: center;
    gap: .4rem;
}

.meta-ok {
    color: var(--plat-ok);
}

.meta-err {
    color: var(--plat-err);
}

/* ── Stat Row ─────────────────────────────────────────────────── */
.platform-stat-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    border: 1px solid var(--plat-border);
    border-radius: var(--plat-radius);
    overflow: hidden;
}

.platform-stat {
    flex: 1 1 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: .75rem 1rem;
    border-right: 1px solid var(--plat-border);
    text-align: center;
}

.platform-stat:last-child {
    border-right: none;
}

.platform-stat-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--plat-primary);
    line-height: 1.2;
}

.platform-stat-lbl {
    font-size: 0.75rem;
    color: var(--plat-text-light);
    text-transform: uppercase;
    letter-spacing: .04em;
}

/* ── Health Grid ──────────────────────────────────────────────── */
.platform-health-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.platform-health-card {
    background: var(--plat-bg);
    border: 1px solid var(--plat-border);
    border-radius: var(--plat-radius);
    padding: 1rem 1.25rem;
}

.platform-health-card h3 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--plat-text-light);
    margin-bottom: .75rem;
}

.platform-health-stat {
    display: flex;
    align-items: baseline;
    gap: .5rem;
    margin-bottom: .75rem;
}

.platform-health-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--plat-text);
    margin-bottom: .5rem;
}

.platform-check {
    font-size: 0.875rem;
    margin-bottom: .35rem;
}

.check-ok {
    color: var(--plat-ok);
}

.check-fail {
    color: var(--plat-err);
    font-weight: 600;
}

/* ── Module List ──────────────────────────────────────────────── */
.platform-module-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
    margin: .5rem 0 .75rem;
}

.platform-module-badge {
    background: #d0f0e6;
    color: #0c5c3e;
    font-size: 0.75rem;
    font-weight: 600;
    padding: .2rem .6rem;
    border-radius: 99px;
}

/* ── Buttons ──────────────────────────────────────────────────── */
.platform-btn {
    display: inline-block;
    padding: .5rem 1.1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: opacity .15s;
}

.platform-btn:hover {
    opacity: .88;
}

.platform-btn-primary {
    background: var(--plat-accent);
    color: #fff;
}

.platform-btn-secondary {
    background: var(--plat-border);
    color: var(--plat-text);
}

/* ── Links ────────────────────────────────────────────────────── */
.platform-link {
    font-size: 0.85rem;
    color: var(--plat-accent);
    text-decoration: none;
}

.platform-link:hover {
    text-decoration: underline;
}

/* ── Alerts ───────────────────────────────────────────────────── */
.platform-alert {
    padding: .75rem 1rem;
    border-radius: var(--plat-radius);
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.platform-alert-error {
    background: #fef2f2;
    color: var(--plat-err);
    border: 1px solid #fca5a5;
}

.platform-alert-success {
    background: #f0fdf4;
    color: var(--plat-ok);
    border: 1px solid #86efac;
}

/* ── Notice ───────────────────────────────────────────────────── */
.platform-notice {
    background: #fefce8;
    color: #92400e;
    border: 1px solid #fcd34d;
    padding: .75rem 1rem;
    border-radius: var(--plat-radius);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

/* ── Login Page ───────────────────────────────────────────────── */
.platform-login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.platform-login-wrap {
    width: 100%;
    max-width: 460px;
    padding: 1.5rem;
}

.platform-login-card {
    background: #132420;
    border: 1px solid rgba(29, 158, 117, .2);
    border-radius: var(--plat-radius);
    padding: 2.5rem 2.5rem;
    box-shadow: 0 12px 48px rgba(0, 0, 0, .55);
    text-align: center;
}

.platform-login-logo {
    margin-bottom: 1.5rem;
}

.platform-login-logo-img {
    display: block;
    margin: 0 auto;
    width: 100%;
    max-width: 320px;
    border-radius: 4px;
}

.platform-login-card h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--plat-cream);
    margin-bottom: .35rem;
}

.platform-login-sub {
    font-size: 0.875rem;
    color: var(--plat-accent-lt);
    opacity: .75;
    margin-bottom: 1.75rem;
}

.platform-login-form {
    text-align: left;
}

.platform-btn-primary {
    /* also used standalone */
    width: 100%;
    text-align: center;
    padding: .65rem 1rem;
    font-size: 1rem;
}

/* Dark overrides */
.platform-dark-login {
    background: var(--plat-dark);
}

.platform-dark-login .platform-field label {
    color: var(--plat-cream);
}

.platform-dark-login .platform-field input[type="text"],
.platform-dark-login .platform-field input[type="password"] {
    background: #0c1614;
    border-color: rgba(29, 158, 117, .3);
    color: var(--plat-cream);
}

.platform-dark-login .platform-field input::placeholder {
    color: rgba(232, 228, 218, .35);
}

.platform-dark-login .platform-alert-error {
    background: rgba(220, 38, 38, .15);
    border-color: rgba(220, 38, 38, .4);
}

/* ── Fields ───────────────────────────────────────────────────── */
.platform-field {
    margin-bottom: 1.1rem;
}

.platform-field label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: .35rem;
    color: var(--plat-text);
}

.platform-field input[type="text"],
.platform-field input[type="password"] {
    width: 100%;
    padding: .55rem .85rem;
    border: 1px solid var(--plat-border);
    border-radius: 6px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color .15s;
}

.platform-field input:focus {
    border-color: var(--plat-accent);
    box-shadow: 0 0 0 3px rgba(29, 158, 117, .18);
}

/* ── Settings Card ────────────────────────────────────────────── */
.platform-settings-card {
    max-width: 480px;
}

/* ── Platform editor embed ────────────────────────────────────── */
.platform-editor-msg {
    color: rgba(12, 22, 20, .35);
    font-size: 1rem;
    text-align: center;
    padding: 2rem;
}

.platform-editor-msg--error {
    color: var(--plat-err);
}

.platform-editor-empty {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Strip padding and make content area fill height when editor is present */
html:has(#editor-wrap),
body:has(#editor-wrap) {
    height: 100%;
    overflow: hidden;
}

/* All /cms/editor pages — force full width regardless of wide toggle */
html:has(.platform-editor-page),
.platform-editor-page {
    height: 100%;
    overflow: hidden;
}

.platform-editor-page .platform-wrap {
    max-width: none;
    box-shadow: none;
}

.platform-body:has(#editor-wrap) {
    height: 100%;
    min-height: unset;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.platform-body:has(#editor-wrap) .platform-bar {
    flex-shrink: 0;
}

.platform-body:has(#editor-wrap) .platform-wrap {
    flex: 1;
    min-height: unset;
    overflow: hidden;
    display: flex;
    max-width: none;
    box-shadow: none;
}

.platform-main:has(#editor-wrap) {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.platform-content:has(#editor-wrap) {
    padding: 0;
    max-width: none;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* editor-wrap fills the platform content area */
.platform-content #editor-wrap {
    flex: 1;
    min-height: 0;
    height: 100%;
}

.platform-change-password {
    margin-top: 1.5rem;
}

/* ── Utilities ────────────────────────────────────────────────── */
.text-muted {
    color: var(--plat-text-light);
    font-size: 0.875rem;
}

.text-danger {
    color: var(--plat-err);
}

code {
    background: var(--plat-bg);
    border: 1px solid var(--plat-border);
    border-radius: 3px;
    padding: .1em .4em;
    font-size: 0.875em;
    font-family: 'Consolas', monospace;
}

@media (max-width: 640px) {
    .platform-instance-header {
        flex-direction: column;
    }

    .platform-stat-row {
        flex-direction: column;
    }

    .platform-stat {
        border-right: none;
        border-bottom: 1px solid var(--plat-border);
    }

    .platform-stat:last-child {
        border-bottom: none;
    }
}

/* ── Dashboard Hero ───────────────────────────────────────────── */
.platform-page-hero {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    background: var(--plat-dark);
    border-radius: var(--plat-radius);
    padding: 2rem 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, .2);
}

.platform-hero-brand {
    flex-shrink: 0;
}

.platform-hero-logo {
    display: block;
    width: 220px;
    height: 220px;
}

.platform-hero-info h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--plat-cream);
    margin-bottom: .3rem;
}

.platform-hero-sub {
    font-size: 0.95rem;
    color: var(--plat-accent-lt);
    margin-bottom: .6rem;
}

.platform-hero-meta {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: 0.8rem;
    color: rgba(232, 228, 218, .5);
}

@media (max-width: 640px) {
    .platform-page-hero {
        flex-direction: column;
        text-align: center;
    }

    .platform-hero-logo {
        width: 120px;
    }

    .platform-hero-meta {
        justify-content: center;
    }
}

/* ── Footer ───────────────────────────────────────────────────── */
.platform-footer {
    text-align: center;
    padding: 1.25rem;
    font-size: 0.8rem;
    color: rgba(100, 116, 139, .6);
    border-top: 1px solid var(--plat-border);
    margin-top: 2rem;
}

.platform-footer a {
    color: var(--plat-accent);
    text-decoration: none;
}

.platform-footer a:hover {
    text-decoration: underline;
}

/* ── Source Editor (/cms/source) ──────────────────────────────── */
.platform-main:has(#source-wrap),
.platform-content:has(#source-wrap) {
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 0;
    max-width: none;
    flex: 1;
    min-height: 0;
}

#source-wrap {
    flex: 1;
    min-height: 0;
    display: flex;
    overflow: hidden;
}

.source-tree {
    width: 220px;
    flex-shrink: 0;
    overflow-y: auto;
    border-right: 1px solid var(--plat-border);
    background: var(--plat-bg-card);
}

.source-tree details {
    border-bottom: 1px solid var(--plat-border);
}

.source-tree details summary {
    padding: 0.42rem 0.85rem;
    font-size: 0.69rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: var(--plat-text-light);
    cursor: pointer;
    list-style: none;
    background: var(--plat-bg);
    user-select: none;
}

.source-tree details summary::-webkit-details-marker {
    display: none;
}

.source-tree details[open]>summary {
    color: var(--plat-accent);
}

.source-tree-file {
    display: block;
    padding: 0.28rem 0.85rem 0.28rem 1.25rem;
    font-size: 0.78rem;
    color: var(--plat-text);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-left: 3px solid transparent;
    transition: background .1s, border-color .1s;
}

.source-tree-file:hover {
    background: var(--plat-bg);
    border-left-color: var(--plat-accent-lt);
}

.source-tree-file.active {
    background: rgba(29, 158, 117, .09);
    border-left-color: var(--plat-accent);
    color: var(--plat-accent);
    font-weight: 600;
}

.source-code-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

.source-code-toolbar {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.45rem 1rem;
    border-bottom: 1px solid var(--plat-border);
    background: var(--plat-bg-card);
    flex-shrink: 0;
}

.source-code-path {
    flex: 1;
    font-size: 0.79rem;
    font-family: 'Consolas', monospace;
    color: var(--plat-text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.source-code-form {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.source-code-textarea {
    flex: 1;
    resize: none;
    border: none;
    outline: none;
    padding: 1rem 1.25rem;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 0.82rem;
    line-height: 1.55;
    background: #fff;
    color: var(--plat-text);
    tab-size: 4;
    white-space: pre;
    overflow-wrap: normal;
    overflow-x: auto;
}

.source-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--plat-text-light);
    font-size: 0.95rem;
}

.source-flash {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--plat-border);
    flex-shrink: 0;
}

.source-flash-success {
    background: rgba(22, 163, 74, .1);
    color: var(--plat-ok);
}

.source-flash-error {
    background: rgba(220, 38, 38, .08);
    color: var(--plat-err);
}

/* ── Source editor: view-mode toolbar group & split/preview panes ── */

.source-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.source-view-toggle {
    display: flex;
    border: 1px solid var(--plat-border);
    border-radius: 5px;
    overflow: hidden;
}

.source-view-toggle .btn {
    border-radius: 0;
    border: none;
    border-right: 1px solid var(--plat-border);
    padding: 0.28rem 0.7rem;
    font-size: 0.78rem;
}

.source-view-toggle .btn:last-child {
    border-right: none;
}

.source-view-toggle .btn.active {
    background: var(--plat-accent);
    color: #fff;
}

/* Editor body — hosts textarea and/or preview iframe side by side */
.source-editor-body {
    flex: 1;
    display: flex;
    min-height: 0;
    overflow: hidden;
}

/* Code-only: textarea fills entire width, frame hidden */
.source-view-code .source-code-textarea {
    flex: 1;
}

.source-view-code .source-preview-frame {
    display: none;
}

/* Split: 50 / 50 */
.source-view-split .source-code-textarea {
    flex: 1;
    border-right: 2px solid var(--plat-border);
}

.source-view-split .source-preview-frame {
    flex: 1;
}

/* Preview-only: hide textarea, frame fills */
.source-view-preview .source-code-textarea {
    display: none;
}

.source-view-preview .source-preview-frame {
    flex: 1;
}

.source-preview-frame {
    border: none;
    background: #fff;
    min-width: 0;
}