:root {
    color-scheme: dark light;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: Inter, Segoe UI, Arial, sans-serif;
}

a {
    color: inherit;
}

h1:focus {
    outline: none;
}

.top-bar {
    border-bottom: 1px solid var(--mud-palette-divider);
}

.brand {
    font-size: 1.05rem;
    font-weight: 800;
    text-decoration: none;
}

nav {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--mud-palette-text-secondary);
    font-size: .94rem;
}

nav a {
    text-decoration: none;
}

nav a:hover {
    color: var(--mud-palette-text-primary);
}

.top-actions,
.auth-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.auth-actions {
    min-height: 36px;
}

.auth-button,
.icon-button {
    appearance: none;
    border: 1px solid color-mix(in srgb, var(--mud-palette-primary), transparent 54%);
    border-radius: 6px;
    background: color-mix(in srgb, var(--mud-palette-primary), transparent 90%);
    color: var(--mud-palette-text-primary);
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}

.auth-button {
    min-height: 36px;
    padding: 0 12px;
}

.auth-button.primary {
    background: var(--mud-palette-primary);
    color: var(--mud-palette-primary-text);
}

.auth-button.danger {
    border-color: rgba(255, 180, 171, .58);
    background: rgba(255, 180, 171, .12);
    color: #ffb4ab;
}

.auth-user {
    max-width: 220px;
    color: var(--mud-palette-text-secondary);
    font-size: .88rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

main {
    width: min(1180px, calc(100vw - 36px));
    margin: 0 auto;
}

.main-content {
    min-height: 100vh;
    background:
        radial-gradient(ellipse 80% 340px at 60% 0, rgba(179, 124, 255, .10), transparent),
        var(--mud-palette-background);
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 480px);
    gap: 48px;
    align-items: center;
    min-height: 560px;
    padding: 64px 0 48px;
}

.hero-copy h1,
.section-heading h2,
.api-section h2 {
    margin: 0;
    line-height: 1.05;
    letter-spacing: 0;
}

.hero-copy h1 {
    max-width: 820px;
    font-size: clamp(2.4rem, 6vw, 5.2rem);
}

.lede {
    max-width: 680px;
    color: var(--mud-palette-text-secondary);
    font-size: 1.16rem;
    line-height: 1.7;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--mud-palette-tertiary);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid color-mix(in srgb, var(--mud-palette-primary), transparent 42%);
    border-radius: 6px;
    background: color-mix(in srgb, var(--mud-palette-primary), transparent 88%);
    color: var(--mud-palette-text-primary);
    font-weight: 700;
    text-decoration: none;
}

.button.primary {
    background: var(--mud-palette-primary);
    color: var(--mud-palette-primary-text);
}

.api-section,
.content-card {
    border: 1px solid var(--mud-palette-divider);
    border-radius: 8px;
    background: color-mix(in srgb, var(--mud-palette-surface), transparent 4%);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: #8be6c4;
    box-shadow: 0 0 0 5px rgba(139, 230, 196, .18);
    flex-shrink: 0;
}

/* ── Hero visual panel ───────────────────────────────────────────────────── */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-card {
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--mud-palette-divider);
    border-radius: 14px;
    background: color-mix(in srgb, var(--mud-palette-surface), transparent 2%);
    box-shadow: 0 32px 80px rgba(0, 0, 0, .32), 0 0 0 1px rgba(179, 124, 255, .10);
    overflow: hidden;
}

.hero-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--mud-palette-divider);
}

.hero-card-label {
    font-size: .82rem;
    font-weight: 700;
    color: var(--mud-palette-text-secondary);
}

.hero-card-body {
    display: grid;
    gap: 4px;
    padding: 12px;
}

.hero-arc-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 8px;
    border-radius: 8px;
    transition: background .15s;
}

.hero-arc-row:hover {
    background: color-mix(in srgb, var(--mud-palette-primary) 6%, transparent);
}

.hero-arc-row-muted {
    opacity: .55;
}

.hero-arc-thumb {
    width: 36px;
    height: 54px;
    border-radius: 5px;
    flex-shrink: 0;
}

.hero-arc-thumb-1 { background: linear-gradient(135deg, #b37cff 0%, #6b3fa0 100%); }
.hero-arc-thumb-2 { background: linear-gradient(135deg, #ffcc80 0%, #c77800 100%); }
.hero-arc-thumb-3 { background: linear-gradient(135deg, #80d8ff 0%, #0077aa 100%); }

.hero-arc-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.hero-arc-info strong {
    font-size: .9rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hero-arc-info span {
    font-size: .76rem;
    color: var(--mud-palette-text-secondary);
}

.hero-arc-badge {
    font-size: .72rem;
    font-weight: 700;
    padding: 3px 9px;
    border-radius: 99px;
    background: color-mix(in srgb, #8be6c4 15%, transparent);
    color: #8be6c4;
    white-space: nowrap;
}

.hero-arc-badge-pending {
    background: color-mix(in srgb, var(--mud-palette-tertiary) 15%, transparent);
    color: var(--mud-palette-tertiary);
}

.hero-card-footer {
    padding: 12px 18px 16px;
    border-top: 1px solid var(--mud-palette-divider);
}

.hero-code {
    display: block;
    padding: 8px 12px;
    border: 1px solid color-mix(in srgb, var(--mud-palette-primary), transparent 60%);
    border-radius: 6px;
    background: rgba(0, 0, 0, .22);
    color: var(--mud-palette-secondary);
    font-size: .82rem;
    overflow-wrap: anywhere;
}

/* ── Highlights strip ────────────────────────────────────────────────────── */
.highlights-strip {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
    padding: 18px 0 28px;
    border-top: 1px solid var(--mud-palette-divider);
    border-bottom: 1px solid var(--mud-palette-divider);
    margin-bottom: 16px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 28px;
    font-size: .88rem;
    font-weight: 600;
    color: var(--mud-palette-text-secondary);
}

.highlight-item svg {
    width: 18px;
    height: 18px;
    color: var(--mud-palette-primary);
    flex-shrink: 0;
}

.highlight-divider {
    width: 1px;
    height: 22px;
    background: var(--mud-palette-divider);
}

code {
    display: block;
    padding: 10px 12px;
    border: 1px solid color-mix(in srgb, var(--mud-palette-primary), transparent 66%);
    border-radius: 6px;
    background: rgba(0, 0, 0, .22);
    color: var(--mud-palette-secondary);
    overflow-wrap: anywhere;
}

.section-band {
    padding: 42px 0;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.section-heading h2,
.api-section h2 {
    font-size: clamp(1.7rem, 4vw, 2.8rem);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.admin-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 360px));
    gap: 16px;
}

.admin-action-card {
    color: inherit;
    text-decoration: none;
}

.manage-list {
    display: grid;
    gap: 12px;
}

.manage-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 16px;
    border: 1px solid var(--mud-palette-divider);
    border-radius: 8px;
    background: color-mix(in srgb, var(--mud-palette-surface), transparent 4%);
}

.manage-list-item h2 {
    margin: 4px 0 8px;
}

.manage-list-item p {
    max-width: 720px;
    margin: 0;
    color: var(--mud-palette-text-secondary);
    line-height: 1.5;
}

.content-card {
    min-height: 190px;
    padding: 18px;
    transition: border-color .16s ease, background .16s ease, transform .16s ease;
}

.content-card:hover {
    border-color: color-mix(in srgb, var(--mud-palette-primary), transparent 28%);
    background: color-mix(in srgb, var(--mud-palette-primary), var(--mud-palette-surface) 88%);
    transform: translateY(-2px);
}

.content-card h3 {
    margin: 0 0 10px;
    font-size: 1.15rem;
}

.content-card p {
    color: var(--mud-palette-text-secondary);
    line-height: 1.55;
}

.content-meta {
    color: var(--mud-palette-tertiary);
    font-size: .8rem;
    font-weight: 700;
}

.api-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
    gap: 24px;
    margin: 42px 0 72px;
    padding: 24px;
}

.api-section p {
    color: var(--mud-palette-text-secondary);
    line-height: 1.65;
}

.api-list {
    display: grid;
    gap: 10px;
}

.story-arc-overview-tools {
    margin-bottom: 14px;
}

.overview-filter-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(160px, 1fr));
    gap: 12px;
}

.story-arc-overview-table {
    overflow-x: auto;
}

.empty {
    color: var(--mud-palette-text-secondary);
}

.import-layout,
.edit-layout {
    display: grid;
    grid-template-columns: minmax(280px, 420px) minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

.file-drop {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 150px;
    margin-top: 18px;
    border: 1px dashed color-mix(in srgb, var(--mud-palette-primary), transparent 38%);
    border-radius: 8px;
    background: color-mix(in srgb, var(--mud-palette-primary), transparent 92%);
    color: var(--mud-palette-secondary);
    cursor: pointer;
    font-weight: 700;
    text-align: center;
}

.file-drop.compact {
    min-height: 44px;
    margin-top: 0;
}

.file-drop input[type="file"] {
    position: absolute;
    inset: 0;
    cursor: pointer;
    opacity: 0;
}

.hidden-file-input {
    display: none;
}

.arc-list {
    display: grid;
    gap: 10px;
}

.arc-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--mud-palette-divider);
    border-radius: 6px;
    color: inherit;
    text-decoration: none;
}

.arc-list-item:hover {
    border-color: color-mix(in srgb, var(--mud-palette-primary), transparent 30%);
    background: color-mix(in srgb, var(--mud-palette-primary), transparent 88%);
}

.textarea-input {
    min-height: 130px;
    padding-block: 10px;
    resize: vertical;
}

.markdown-input {
    min-height: 520px;
    padding-block: 12px;
    resize: vertical;
}

.toggle-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    color: var(--mud-palette-text-secondary);
    font-weight: 700;
}

.cover-editor {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.story-cover {
    display: grid;
    place-items: center;
    aspect-ratio: 2 / 3;
    width: min(220px, 100%);
    overflow: hidden;
    border: 1px solid var(--mud-palette-divider);
    border-radius: 8px;
    background: linear-gradient(150deg, rgba(179, 124, 255, .2), rgba(255, 204, 128, .1));
    color: var(--mud-palette-text-secondary);
}

.story-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.issue-editor-card {
    min-width: 0;
}

.compact-heading {
    align-items: center;
    margin-bottom: 12px;
}

.compact-heading h2 {
    margin: 0;
}

.issue-table {
    display: grid;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.issue-row {
    display: grid;
    grid-template-columns: 64px minmax(220px, 1.5fr) 80px 94px 84px 120px 120px 42px;
    gap: 8px;
    align-items: center;
    min-width: 930px;
}

.issue-row-with-cover {
    grid-template-columns: 36px 64px minmax(220px, 1.5fr) 80px 94px 84px 120px 120px 42px;
    min-width: 980px;
}

.issue-thumb {
    width: 36px;
    height: 54px;
    border-radius: 3px;
    overflow: hidden;
    background: color-mix(in srgb, var(--mud-palette-primary) 8%, var(--mud-palette-surface));
    flex-shrink: 0;
}

.issue-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.issue-row-header {
    color: var(--mud-palette-text-secondary);
    font-size: .78rem;
    font-weight: 800;
    text-transform: uppercase;
}

.page-action-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.auth-dialog {
    width: min(430px, calc(100vw - 32px));
    border: 1px solid var(--mud-palette-divider);
    border-radius: 8px;
    padding: 0;
    background: var(--mud-palette-surface);
    color: var(--mud-palette-text-primary);
    box-shadow: 0 26px 80px rgba(0, 0, 0, .48);
}

.dialog-backdrop {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: grid;
    place-items: center;
    padding: 18px;
    background: rgba(0, 0, 0, .62);
    backdrop-filter: blur(4px);
}

.auth-form {
    display: grid;
    gap: 16px;
    padding: 22px;
}

.auth-form-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.auth-form-header h2 {
    margin: 0;
    font-size: 1.6rem;
}

.icon-button {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    padding: 0;
}

.auth-message {
    min-height: 20px;
    margin: 0;
    color: var(--mud-palette-text-secondary);
    font-size: .92rem;
}

.auth-message.error {
    color: #ffb4ab;
}

.auth-message.success {
    color: #8be6c4;
}

.form-label {
    display: grid;
    gap: 6px;
    color: var(--mud-palette-text-secondary);
    font-size: .9rem;
    font-weight: 600;
}

.form-input {
    width: 100%;
    min-height: 44px;
    border: 1px solid color-mix(in srgb, var(--mud-palette-primary), transparent 62%);
    border-radius: 6px;
    padding: 0 12px;
    background: rgba(0, 0, 0, .22);
    color: var(--mud-palette-text-primary);
    font: inherit;
}

.form-input:focus {
    border-color: var(--mud-palette-primary);
    outline: 2px solid color-mix(in srgb, var(--mud-palette-primary), transparent 72%);
}

@media (max-width: 1024px) {
    .pillars-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .top-bar,
    .hero,
    .api-section {
        grid-template-columns: 1fr;
    }

    .top-bar {
        align-items: flex-start;
        flex-direction: column;
    }

    .top-actions {
        align-items: flex-start;
        flex-direction: column;
    }

    .auth-actions {
        flex-wrap: wrap;
    }

    .hero {
        min-height: auto;
        padding-top: 34px;
        gap: 32px;
    }

    .hero-card {
        max-width: 100%;
    }

    .highlights-strip {
        gap: 0;
        padding: 12px 0 20px;
    }

    .highlight-item {
        padding: 8px 14px;
        font-size: .82rem;
    }

    .highlight-divider {
        display: none;
    }

    .features-primary,
    .features-secondary-grid,
    .pillars-grid,
    .content-columns-section {
        grid-template-columns: 1fr;
    }

    .feature-card-large {
        grid-template-rows: auto;
    }

    .cta-section {
        padding: 40px 20px;
    }

    .import-layout,
    .edit-layout {
        grid-template-columns: 1fr;
    }

    .overview-filter-grid {
        grid-template-columns: 1fr;
    }

    .manage-list-item {
        align-items: flex-start;
        flex-direction: column;
    }
}

/* Settings page */
.settings-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 480px));
    gap: 24px;
    align-items: start;
}

.settings-card {
    padding: 24px;
}

.settings-card h2 {
    margin: 0 0 8px;
    font-size: 1.1rem;
}

.api-key-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.api-key-row .form-input {
    flex: 1;
    font-family: monospace;
    font-size: .88rem;
    letter-spacing: .02em;
}

/* User management */
.user-form-card {
    padding: 20px;
    border: 1px solid var(--mud-palette-divider);
    border-radius: 8px;
    background: color-mix(in srgb, var(--mud-palette-surface), transparent 4%);
    margin-bottom: 16px;
}

.user-form-card h2 {
    margin: 0 0 16px;
    font-size: 1.1rem;
}

.user-form-grid,
.user-password-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin-bottom: 16px;
}

.user-edit-form {
    width: 100%;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.field-hint {
    font-size: .78rem;
    margin-top: 4px;
    display: block;
}

.field-hint.error {
    color: var(--mud-palette-error);
}

/* ── Features section ─────────────────────────────────────────────────────── */
.features-section {
    padding: 72px 0 56px;
}

.features-eyebrow {
    text-align: center;
    margin-bottom: 56px;
}

.features-eyebrow h2 {
    font-size: clamp(1.7rem, 4vw, 2.6rem);
    font-weight: 800;
    margin: 8px 0 12px;
}

.features-subtitle {
    color: var(--mud-palette-text-secondary);
    font-size: 1rem;
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.65;
}

.features-primary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: stretch;
}

.features-secondary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.feature-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 28px;
    border-radius: 14px;
    border: 1px solid var(--mud-palette-divider);
    background: var(--mud-palette-surface);
    text-decoration: none;
    color: inherit;
    transition: border-color .2s, box-shadow .2s, transform .15s;
}

.feature-card:not(.feature-card-api):hover {
    border-color: var(--mud-palette-primary);
    box-shadow: 0 4px 24px color-mix(in srgb, var(--mud-palette-primary) 14%, transparent);
    transform: translateY(-3px);
}

.feature-card-large {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
    overflow: hidden;
    padding: 0;
    gap: 0;
}

.feature-card-inner {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 32px;
    flex: 1;
}

.feature-card-decoration {
    height: 130px;
    background: linear-gradient(160deg, color-mix(in srgb, var(--mud-palette-primary) 14%, transparent), color-mix(in srgb, var(--mud-palette-tertiary) 10%, transparent));
    border-top: 1px solid var(--mud-palette-divider);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.fcd-stack {
    display: flex;
    gap: 14px;
    transform: perspective(400px) rotateX(12deg) rotateY(-4deg);
}

.fcd-book {
    width: 56px;
    height: 84px;
    border-radius: 4px;
    flex-shrink: 0;
    box-shadow: 2px 4px 16px rgba(0, 0, 0, .32);
}

.fcd-book-1 {
    background: linear-gradient(135deg, #b37cff 0%, #6b3fa0 100%);
    transform: rotate(-3deg);
}

.fcd-book-2 {
    background: linear-gradient(135deg, #ffcc80 0%, #c77800 100%);
    transform: rotate(1deg) translateY(-8px);
}

.fcd-book-3 {
    background: linear-gradient(135deg, #80d8ff 0%, #0077aa 100%);
    transform: rotate(4deg) translateY(-2px);
}

.feature-icon {
    width: 44px;
    height: 44px;
    padding: 10px;
    border-radius: 10px;
    background: color-mix(in srgb, var(--mud-palette-primary) 12%, transparent);
    color: var(--mud-palette-primary);
    flex-shrink: 0;
}

.feature-icon-large {
    width: 52px;
    height: 52px;
    padding: 12px;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 0 8px;
}

.feature-body p {
    font-size: .92rem;
    line-height: 1.65;
    color: var(--mud-palette-text-secondary);
    margin: 0;
}

.feature-link {
    font-size: .88rem;
    font-weight: 600;
    color: var(--mud-palette-primary);
    margin-top: auto;
}

.feature-code {
    font-size: .82rem;
    padding: 6px 12px;
    border-radius: 6px;
    background: color-mix(in srgb, var(--mud-palette-primary) 10%, transparent);
    color: var(--mud-palette-primary);
    width: fit-content;
    margin-top: auto;
}

/* ── Platform pillars ────────────────────────────────────────────────────── */
.pillars-section {
    padding: 80px 0 64px;
}

.pillars-eyebrow {
    text-align: center;
    margin-bottom: 56px;
}

.pillars-eyebrow h2 {
    font-size: clamp(1.7rem, 4vw, 2.6rem);
    font-weight: 800;
    margin: 8px 0 12px;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pillar-card {
    border: 1px solid var(--mud-palette-divider);
    border-radius: 16px;
    background: var(--mud-palette-surface);
    overflow: hidden;
}

.pillar-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 24px 20px;
    border-bottom: 1px solid var(--mud-palette-divider);
}

.pillar-icon {
    width: 48px;
    height: 48px;
    padding: 11px;
    border-radius: 12px;
    flex-shrink: 0;
}

.pillar-icon svg {
    width: 100%;
    height: 100%;
}

.pillar-server .pillar-icon {
    background: color-mix(in srgb, var(--mud-palette-primary) 12%, transparent);
    color: var(--mud-palette-primary);
}

.pillar-web .pillar-icon {
    background: color-mix(in srgb, var(--mud-palette-secondary) 14%, transparent);
    color: var(--mud-palette-secondary);
}

.pillar-mobile .pillar-icon {
    background: color-mix(in srgb, var(--mud-palette-tertiary) 14%, transparent);
    color: var(--mud-palette-tertiary);
}

.pillar-label {
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
    margin: 0 0 3px;
}

.pillar-server .pillar-label { color: var(--mud-palette-primary); }
.pillar-web .pillar-label    { color: var(--mud-palette-secondary); }
.pillar-mobile .pillar-label { color: var(--mud-palette-tertiary); }

.pillar-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0;
}

.pillar-description {
    margin: 0;
    padding: 18px 24px 4px;
    color: var(--mud-palette-text-secondary);
    font-size: .91rem;
    line-height: 1.6;
}

.pillar-features {
    list-style: none;
    margin: 0;
    padding: 14px 24px 24px;
    display: grid;
    gap: 14px;
}

.pillar-features li {
    display: flex;
    align-items: flex-start;
    gap: 11px;
    font-size: .88rem;
    line-height: 1.55;
    color: var(--mud-palette-text-secondary);
}

.pillar-features li svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.pillar-server .pillar-features li svg { color: var(--mud-palette-primary); }
.pillar-web .pillar-features li svg    { color: var(--mud-palette-secondary); }
.pillar-mobile .pillar-features li svg { color: var(--mud-palette-tertiary); }

.pillar-features li strong {
    color: var(--mud-palette-text-primary);
}

/* ── Tinted section band ─────────────────────────────────────────────────── */
.section-band-tinted {
    background: color-mix(in srgb, var(--mud-palette-primary) 4%, var(--mud-palette-background));
    border-radius: 16px;
    padding-left: 28px;
    padding-right: 28px;
    margin-left: -28px;
    margin-right: -28px;
}

/* ── Blog + wiki two-column ──────────────────────────────────────────────── */
.content-columns-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
}

.content-column {}

/* ── API section ─────────────────────────────────────────────────────────── */
.api-section {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
    gap: 40px;
    margin: 16px 0 0;
    padding: 36px;
    border: 1px solid var(--mud-palette-divider);
    border-radius: 14px;
    background: color-mix(in srgb, var(--mud-palette-surface), transparent 4%);
}

.api-copy p {
    color: var(--mud-palette-text-secondary);
    line-height: 1.65;
    margin-bottom: 20px;
}

.api-copy h2 {
    font-size: clamp(1.4rem, 3vw, 2rem);
    margin: 8px 0 14px;
}

/* ── CTA section ─────────────────────────────────────────────────────────── */
.cta-section {
    margin: 48px 0 72px;
    border-radius: 16px;
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--mud-palette-primary) 16%, var(--mud-palette-surface)),
        color-mix(in srgb, var(--mud-palette-tertiary) 8%, var(--mud-palette-surface)));
    border: 1px solid color-mix(in srgb, var(--mud-palette-primary), transparent 52%);
    padding: 64px 40px;
    text-align: center;
}

.cta-inner {
    max-width: 560px;
    margin: 0 auto;
}

.cta-inner h2 {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    margin: 8px 0 14px;
}

.cta-inner p {
    color: var(--mud-palette-text-secondary);
    font-size: 1rem;
    line-height: 1.65;
    margin-bottom: 28px;
}

.cta-inner .hero-actions {
    justify-content: center;
}

/* ── Arc card grid (public story arcs page) ──────────────────────────────── */
.arc-search {
    width: 280px;
}

.arc-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.arc-card {
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    border: 1px solid var(--mud-palette-divider);
    background: var(--mud-palette-surface);
    overflow: hidden;
    transition: border-color .2s, box-shadow .2s, transform .15s;
}

.arc-card:hover {
    border-color: var(--mud-palette-primary);
    box-shadow: 0 4px 20px color-mix(in srgb, var(--mud-palette-primary) 12%, transparent);
    transform: translateY(-3px);
}

.arc-card-cover {
    width: 100%;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: color-mix(in srgb, var(--mud-palette-primary) 8%, var(--mud-palette-surface));
}

.arc-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.arc-card-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--mud-palette-primary);
    opacity: .45;
}

.arc-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.arc-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: .82rem;
}

.arc-issue-count {
    font-size: .8rem;
    padding: 2px 10px;
    border-radius: 99px;
    background: color-mix(in srgb, var(--mud-palette-primary) 12%, transparent);
    color: var(--mud-palette-primary);
    font-weight: 600;
}

.arc-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
}

.arc-card-description {
    font-size: .88rem;
    line-height: 1.6;
    color: var(--mud-palette-text-secondary);
    margin: 0;
    flex: 1;
}

.arc-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: .78rem;
    color: var(--mud-palette-text-secondary);
    padding-top: 12px;
    border-top: 1px solid var(--mud-palette-divider);
    margin-top: auto;
}

.arc-version-name {
    font-weight: 600;
    color: var(--mud-palette-text-primary);
}

.arc-empty-state {
    text-align: center;
    padding: 64px 32px;
}

/* ── Arc preview (landing page) ──────────────────────────────────────────── */
.arc-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 32px;
}

.arc-preview-card {
    display: flex;
    flex-direction: column;
    border-radius: 10px;
    border: 1px solid var(--mud-palette-divider);
    background: var(--mud-palette-surface);
    overflow: hidden;
    transition: border-color .2s, transform .15s;
}

.arc-preview-card:hover {
    border-color: var(--mud-palette-primary);
    transform: translateY(-2px);
}

.arc-preview-cover {
    width: 100%;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: color-mix(in srgb, var(--mud-palette-primary) 8%, var(--mud-palette-surface));
}

.arc-preview-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.arc-preview-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--mud-palette-primary);
    opacity: .4;
}

.arc-preview-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.arc-preview-body h3 {
    font-size: .98rem;
    font-weight: 700;
    margin: 0;
}

.arc-preview-body p {
    font-size: .85rem;
    color: var(--mud-palette-text-secondary);
    line-height: 1.55;
    margin: 0;
}

.arc-card-clickable {
    cursor: pointer;
}

/* ── Arc detail view ─────────────────────────────────────────────────────── */
.arc-back-button {
    background: none;
    border: none;
    padding: 0;
    font-size: .9rem;
    font-weight: 600;
    color: var(--mud-palette-primary);
    cursor: pointer;
    margin-bottom: 32px;
    display: inline-block;
}

.arc-back-button:hover {
    text-decoration: underline;
}

.arc-detail-header {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 40px;
    align-items: start;
    margin-bottom: 48px;
}

.arc-detail-cover {
    width: 220px;
    aspect-ratio: 2 / 3;
    border-radius: 10px;
    overflow: hidden;
    background: color-mix(in srgb, var(--mud-palette-primary) 8%, var(--mud-palette-surface));
    border: 1px solid var(--mud-palette-divider);
    flex-shrink: 0;
}

.arc-detail-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.arc-detail-meta h1 {
    font-size: 2rem;
    margin: 8px 0 16px;
}

.arc-detail-description {
    color: var(--mud-palette-text-secondary);
    line-height: 1.7;
    max-width: 640px;
    margin-bottom: 20px;
}

.arc-detail-stats {
    display: flex;
    align-items: center;
    gap: 16px;
}

.arc-source-link {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--mud-palette-primary);
    text-decoration: none;
    opacity: 0.85;
}

.arc-source-link:hover {
    opacity: 1;
    text-decoration: underline;
}

.arc-issues-section h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.issue-sort-order {
    color: var(--mud-palette-text-secondary);
    font-variant-numeric: tabular-nums;
}

/* Story arc edit issue cards */
.edit-issue-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 16px;
}

.edit-issue-card {
    border: 1px solid var(--mud-palette-divider);
    border-radius: 6px;
    overflow: hidden;
    background: var(--mud-palette-surface);
    display: flex;
    flex-direction: column;
}

.edit-issue-card-cover {
    position: relative;
    aspect-ratio: 2 / 3;
    display: grid;
    place-items: center;
    background: linear-gradient(150deg, rgba(123, 47, 214, .24), rgba(0, 108, 103, .16));
    border-bottom: 1px solid var(--mud-palette-divider);
    overflow: hidden;
}

.edit-issue-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.edit-issue-card-num {
    position: absolute;
    top: 6px;
    left: 7px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: rgba(0,0,0,.55);
    border-radius: 4px;
    padding: 1px 6px;
    line-height: 1.6;
}

.edit-issue-card-fields {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
}

.edit-issue-field-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--mud-palette-text-secondary);
}

.edit-issue-input {
    font-size: 12px !important;
    padding: 4px 6px !important;
    height: auto !important;
}

.edit-issue-remove {
    margin-top: 4px;
    font-size: 11px;
    color: var(--mud-palette-error) !important;
    align-self: flex-start;
}

/* Public story arc detail — issue cards */
.pub-issue-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
}

.pub-issue-card {
    border: 1px solid var(--mud-palette-divider);
    border-radius: 6px;
    overflow: hidden;
    background: var(--mud-palette-surface);
}

.pub-issue-card-cover {
    position: relative;
    aspect-ratio: 2 / 3;
    display: grid;
    place-items: center;
    background: linear-gradient(150deg, color-mix(in srgb, var(--mud-palette-primary) 24%, transparent), color-mix(in srgb, var(--mud-palette-secondary) 16%, transparent));
    border-bottom: 1px solid var(--mud-palette-divider);
    overflow: hidden;
}

.pub-issue-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.pub-issue-num {
    position: absolute;
    top: 6px;
    left: 7px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: rgba(0,0,0,.55);
    border-radius: 4px;
    padding: 1px 6px;
    line-height: 1.6;
}

.pub-issue-card-body {
    padding: 8px 10px 10px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.pub-issue-title {
    font-size: .8rem;
    font-weight: 600;
    line-height: 1.3;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.pub-issue-meta {
    font-size: .7rem;
    color: var(--mud-palette-text-secondary);
}

/* --- legacy table styles kept for admin pages --- */
.public-issue-table {
    gap: 4px;
}

.public-issue-row {
    grid-template-columns: 38px 48px minmax(180px, 1.5fr) 80px 100px 72px;
    min-width: 540px;
    align-items: center;
}

.public-issue-thumb {
    display: block;
    width: 34px;
    height: 50px;
    border-radius: 3px;
    overflow: hidden;
    background: color-mix(in srgb, var(--mud-palette-primary) 8%, var(--mud-palette-surface));
    flex-shrink: 0;
}

.public-issue-thumb img {
    display: block;
    width: 34px;
    height: 50px;
    object-fit: cover;
}

@media (max-width: 760px) {
    .features-section { padding: 48px 0; }
    .arc-search { width: 100%; }
    .arc-card-grid, .arc-preview-grid { grid-template-columns: 1fr; }
    .arc-detail-header { grid-template-columns: 1fr; }
    .arc-detail-cover { width: 100%; aspect-ratio: 3 / 2; }
}