:root {
    color-scheme: light;
    --bg: #F7F4ED;
    --panel: #FFFDF9;
    --panel-2: #F1EBDF;
    --line: #E5DDCE;
    --text: #26221B;
    --muted: #6B6355;
    --accent: #B44A1E;
    --accent-dark: #93390F;
    --accent-2: #9C6B1F;
    --danger: #C4453A;
    --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, Cambria, serif;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: inherit; }
.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 310px 1fr;
}
.sidebar {
    border-right: 1px solid var(--line);
    background: #F1ECE1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.brand { text-decoration: none; display: grid; gap: 3px; color: var(--text); }
.brand strong { font-size: 28px; font-family: var(--serif); }
.brand span, .muted, .workspace p, .session-list span, small { color: var(--muted); }
.new-button, button, .button-link {
    border: 0;
    border-radius: 10px;
    background: var(--accent);
    color: #FFFDF9;
    padding: 11px 16px;
    font-weight: 650;
    text-decoration: none;
    cursor: pointer;
    text-align: center;
}
.new-button:hover, .button-link:hover, button[type="submit"]:hover {
    background: var(--accent-dark);
}
.session-list { display: grid; gap: 4px; overflow: auto; }
.session-list a {
    display: grid;
    gap: 3px;
    padding: 10px 12px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text);
}
.session-list a:hover { background: rgba(38, 34, 27, 0.06); }
.session-list span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }
.vertical-link {
    border-top: 1px solid var(--line);
    padding-top: 14px;
}
.vertical-link a {
    display: block;
    border-radius: 10px;
    background: var(--panel);
    padding: 11px 12px;
    text-decoration: none;
    color: var(--text);
}
.pill {
    border: 1px solid var(--accent-2);
    color: var(--accent-2);
    border-radius: 999px;
    padding: 4px 8px;
    font-size: 12px;
}
.main-panel { padding: 36px; }
.workspace { max-width: 1180px; margin: 0 auto; display: grid; gap: 24px; }
.workspace header h1, .auth-panel h1 { margin: 0 0 8px; font-size: 32px; letter-spacing: 0; font-family: var(--serif); }
.helper-text {
    font-size: 14px;
}
.campaign-form, .form-stack, .auth-panel {
    display: grid;
    gap: 18px;
}
.auth-panel { max-width: 420px; margin: 8vh auto; }
.public-body .auth-panel {
    background: var(--paper-card);
    border: 1px solid var(--paper-line);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 10px 30px rgba(38, 34, 27, 0.06);
    margin: 6vh auto;
}
.auth-panel h1 { margin: 0; }
.auth-reassure {
    margin: -8px 0 0;
    color: var(--ink-soft, var(--muted));
    font-size: 15px;
    line-height: 1.5;
}
label { display: grid; gap: 7px; color: var(--muted); font-size: 14px; }
input, textarea, select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #FFFFFF;
    color: var(--text);
    padding: 12px;
    font: inherit;
}
input:focus, textarea:focus, select:focus {
    outline: 2px solid rgba(180, 74, 30, 0.35);
    outline-offset: 1px;
}
textarea { resize: vertical; }
.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mode-switch {
    width: fit-content;
    background: var(--panel-2);
    border-radius: 999px;
    padding: 4px;
    display: flex;
    gap: 2px;
}
.mode-switch button {
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    font-weight: 600;
}
.mode-switch button.active {
    background: #FFFFFF;
    color: var(--text);
    box-shadow: 0 1px 3px rgba(38, 34, 27, 0.12);
}
.missing input, .missing select {
    border-color: var(--accent-2);
    box-shadow: 0 0 0 1px var(--accent-2);
}
.field-error input,
.field-error select,
.field-error.language-field {
    border-color: var(--danger);
    box-shadow: 0 0 0 1px rgba(196, 69, 58, 0.35);
}
.channel-box {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.channel-box label { display: flex; align-items: center; gap: 8px; }
.channel-box input { width: auto; }
.output-choice {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 46px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #FFFFFF;
    padding: 10px 12px;
}
.output-choice label {
    color: var(--text);
    font-weight: 700;
}
.output-choice-featured {
    border-color: rgba(180, 74, 30, 0.55);
    box-shadow: 0 0 0 1px rgba(180, 74, 30, 0.12);
}
.emoji-toggle {
    border-left: 1px solid var(--line);
    padding-left: 14px;
}
.emoji-toggle span {
    color: var(--accent-2);
}
.meta-option {
    display: grid;
    gap: 3px;
    padding-left: 2px;
}
.meta-option small {
    color: var(--muted);
    font-size: 12px;
}
.language-field {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px;
}
.language-field.missing {
    border-color: var(--accent-2);
    box-shadow: 0 0 0 1px var(--accent-2);
}
.language-field legend {
    color: var(--muted);
    font-size: 14px;
    padding: 0 4px;
}
.language-field p {
    margin: 2px 0 10px;
    font-size: 13px;
}
.language-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.language-options label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: #FFFFFF;
    color: var(--text);
    padding: 8px 12px;
}
.language-options input { width: auto; }
.tone-presets {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px;
}
.tone-presets legend {
    color: var(--muted);
    font-size: 14px;
    padding: 0 4px;
}
.tone-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tone-options button {
    background: #FFFFFF;
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 999px;
}
.tone-options button.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(180, 74, 30, 0.2);
    color: var(--accent-dark);
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button {
    background: #FFFFFF;
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 999px;
}
.flash, .warning-box {
    max-width: 1180px;
    margin: 0 auto 18px;
    border: 1px solid rgba(156, 107, 31, 0.4);
    border-radius: 10px;
    background: rgba(156, 107, 31, 0.07);
    padding: 10px 14px;
    color: #6B4E14;
}
.dev-auth-note {
    max-width: 1180px;
    margin: 0 auto 18px;
    border: 1px solid rgba(156, 107, 31, 0.35);
    border-radius: 10px;
    background: rgba(156, 107, 31, 0.07);
    color: #6B4E14;
    padding: 10px 14px;
    font-size: 14px;
}
.limit-note {
    max-width: 1180px;
    margin: 0 auto 18px;
    color: var(--muted);
    font-size: 14px;
}
.limit-note span {
    color: var(--accent-2);
    margin-left: 8px;
}
.app-public-links {
    max-width: 1180px;
    margin: 0 auto 14px;
    display: flex;
    gap: 14px;
    font-size: 13px;
    color: var(--muted);
}
.app-public-links a {
    text-decoration: none;
}
/* ============================================================
   Public pages: warm light theme
   ============================================================ */
.public-body {
    color-scheme: light;
    --paper: #FAF6EF;
    --paper-card: #FFFDF9;
    --paper-soft: #F3EDE1;
    --paper-line: #E7DFD2;
    --ink: #26221B;
    --ink-soft: #6B6355;
    --brand: #B44A1E;
    --brand-dark: #93390F;
    --brand-tint: #F6E4D9;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--paper);
    color: var(--ink);
}
.public-body h1,
.public-body h2,
.public-body h3,
.public-brand,
.footer-brand {
    font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, Cambria, serif;
    color: var(--ink);
}
.brand-dot { color: var(--brand); }
.public-body a { color: var(--brand); }
.public-body .button-link {
    background: var(--brand);
    color: #FFFDF9;
    border-radius: 999px;
    padding: 13px 26px;
    font-weight: 650;
    font-size: 16px;
}
.public-body .button-link:hover { background: var(--brand-dark); }
.public-body .flash {
    border: 1px solid var(--brand);
    background: var(--brand-tint);
    color: var(--ink);
    border-radius: 12px;
}
.public-nav {
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    padding: 22px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.public-body .public-brand {
    font-size: 26px;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
}
.public-nav nav {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}
.public-nav nav a {
    color: var(--ink-soft);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
}
.public-nav nav a:hover { color: var(--ink); }
.public-nav nav a.button-link,
.public-nav nav a.button-link:hover { color: #FFFDF9; }
.public-main {
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    padding: 24px 24px 72px;
    flex: 1;
}

/* Hero */
.home-hero {
    padding: 56px 0 30px;
    max-width: 800px;
    display: grid;
    gap: 24px;
}
.home-hero h1 {
    margin: 0;
    font-size: clamp(30px, 4vw, 42px);
    line-height: 1.14;
    letter-spacing: -0.01em;
}
.home-sub {
    margin: 0;
    max-width: 580px;
    color: var(--ink-soft);
    font-size: 19px;
    line-height: 1.6;
}
.home-cta {
    display: grid;
    gap: 12px;
    justify-items: start;
}
.cta-note {
    margin: 0;
    color: var(--ink-soft);
    font-size: 14px;
}

/* Show section */
.home-demo {
    padding: 56px 0 8px;
    display: grid;
    gap: 26px;
}
.home-demo > h2 {
    margin: 0;
    font-size: clamp(24px, 3vw, 32px);
}
.demo-layout {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 28px;
    align-items: start;
}
.demo-brief {
    position: sticky;
    top: 24px;
    background: var(--paper-card);
    border: 1px solid var(--paper-line);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(38, 34, 27, 0.06);
    display: grid;
    gap: 14px;
}
.demo-brief p {
    margin: 0;
    font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, Cambria, serif;
    font-style: italic;
    font-size: 21px;
    line-height: 1.55;
    color: var(--ink);
}
.demo-tag {
    justify-self: start;
    background: var(--brand-tint);
    color: var(--brand-dark);
    border-radius: 999px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.demo-outputs {
    display: grid;
    gap: 20px;
}
.demo-card {
    background: var(--paper-card);
    border: 1px solid var(--paper-line);
    border-radius: 16px;
    padding: 22px;
    box-shadow: 0 10px 30px rgba(38, 34, 27, 0.06);
    display: grid;
    gap: 16px;
}
.demo-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.demo-card-head strong { font-size: 17px; }
.demo-chip {
    background: var(--paper-soft);
    color: var(--ink-soft);
    border-radius: 999px;
    padding: 4px 11px;
    font-size: 12px;
    font-weight: 650;
}
.demo-field { display: grid; gap: 8px; }
.demo-field h4 {
    margin: 0;
    color: var(--brand-dark);
    font-size: 11px;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.demo-field p {
    margin: 0;
    background: var(--paper-soft);
    border-radius: 10px;
    padding: 10px 13px;
    line-height: 1.55;
    font-size: 15px;
}
.demo-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.demo-keywords span {
    background: var(--paper-soft);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--ink-soft);
}
.demo-card-foot {
    border-top: 1px solid var(--paper-line);
    padding-top: 13px;
    color: var(--ink-soft);
    font-size: 14px;
}
.demo-field p.demo-more {
    background: none;
    padding: 2px 2px 0;
    color: var(--ink-soft);
    font-size: 13px;
    font-style: italic;
}
.demo-note {
    margin: 0;
    color: var(--ink-soft);
    font-size: 14px;
}

/* How it works strip */
.home-steps {
    margin-top: 56px;
    padding: 44px 0 8px;
    border-top: 1px solid var(--paper-line);
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}
.home-steps article { display: grid; gap: 8px; align-content: start; }
.step-num {
    font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, Cambria, serif;
    color: var(--brand);
    font-size: 34px;
    font-weight: 700;
    line-height: 1;
}
.home-steps h3 { margin: 0; font-size: 20px; }
.home-steps p {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.6;
}

/* Free limit */
.home-limit {
    margin-top: 56px;
    background: var(--paper-soft);
    border-radius: 20px;
    padding: 36px;
    display: grid;
    gap: 10px;
    justify-items: center;
    text-align: center;
}
.home-limit h2 { margin: 0; font-size: 28px; }
.home-limit p {
    margin: 0;
    max-width: 560px;
    color: var(--ink-soft);
    line-height: 1.6;
}

/* Final CTA */
.home-final {
    padding: 72px 0 24px;
    display: grid;
    gap: 22px;
    justify-items: center;
    text-align: center;
}
.home-final h2 {
    margin: 0;
    font-size: clamp(26px, 3.4vw, 36px);
}
.home-final .home-cta { justify-items: center; }

/* Other public pages (light restyle) */
.public-page {
    max-width: 760px;
    display: grid;
    gap: 20px;
    padding-top: 24px;
}
.public-page h1 {
    margin: 0;
    font-size: clamp(32px, 4.6vw, 46px);
    line-height: 1.1;
}
.public-page p,
.public-card li,
.public-steps li {
    color: var(--ink-soft);
    font-size: 17px;
    line-height: 1.65;
}
.public-card {
    border: 1px solid var(--paper-line);
    border-radius: 16px;
    background: var(--paper-card);
    padding: 24px;
    box-shadow: 0 10px 30px rgba(38, 34, 27, 0.05);
}
.public-card h2 {
    margin: 0 0 10px;
    font-size: 21px;
}
.public-card p {
    margin: 0;
    line-height: 1.6;
}
.public-card ul,
.public-steps {
    margin: 0;
    padding-left: 22px;
}
.plain-faq {
    margin: 0;
    display: grid;
    gap: 18px;
}
.plain-faq div {
    border-top: 1px solid var(--paper-line);
    padding-top: 14px;
}
.plain-faq dt {
    font-weight: 700;
    margin-bottom: 5px;
}
.plain-faq dd {
    margin: 0;
    color: var(--ink-soft);
    line-height: 1.6;
}
.step-list {
    margin: 8px 0 0;
    padding: 0;
    list-style: none;
    counter-reset: step;
    display: grid;
    gap: 26px;
}
.step-list li {
    counter-increment: step;
    position: relative;
    padding-left: 56px;
    display: grid;
    gap: 6px;
}
.step-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--brand-tint);
    color: var(--brand-dark);
    font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, Cambria, serif;
    font-size: 20px;
    font-weight: 700;
}
.step-list h3 {
    margin: 4px 0 0;
    font-size: 20px;
}
.step-list p {
    margin: 0;
    font-size: 16px;
}
.page-cta {
    padding-top: 8px;
    display: flex;
    align-items: center;
    gap: 14px;
}
.public-footer {
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    padding: 22px 24px 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    border-top: 1px solid var(--paper-line);
    color: var(--ink-soft);
}
.footer-brand { font-size: 20px; font-weight: 700; }
.footer-copy { font-size: 14px; color: var(--ink-soft); }
.public-footer nav { display: flex; gap: 18px; }
.public-footer a {
    color: var(--ink-soft);
    text-decoration: none;
    font-size: 14px;
}
.public-footer a:hover { color: var(--ink); }
.rerun-note {
    display: grid;
    gap: 10px;
    border-radius: 12px;
    background: var(--panel-2);
    padding: 16px;
}
.rerun-note p {
    margin: 0;
}
.variation-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.variation-chips button {
    background: #FFFFFF;
    border: 1px solid var(--line);
    color: var(--text);
    border-radius: 999px;
}
.result-header {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 16px;
}
.rename-form { display: flex; gap: 8px; min-width: min(440px, 100%); }
.output-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(420px, 100%), 1fr));
    gap: 18px;
}
.package-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}
.package-actions h2 {
    margin: 0;
    font-size: 22px;
}
.campaign-package,
.campaign-summary-stack {
    display: grid;
    gap: 18px;
}
.campaign-summary-card {
    display: grid;
    gap: 18px;
    border-left: 3px solid var(--accent);
    border-radius: 14px;
    background: var(--panel);
    padding: 20px 22px;
    box-shadow: 0 8px 24px rgba(38, 34, 27, 0.06);
}
.campaign-summary-top {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 18px;
}
.campaign-summary-top span {
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
}
.campaign-summary-top h2 {
    margin: 5px 0 0;
    font-size: 24px;
    font-family: var(--serif);
}
.campaign-summary-top dl,
.campaign-summary-details {
    margin: 0;
    display: grid;
    gap: 12px;
}
.campaign-summary-top dt,
.campaign-summary-details h3 {
    margin: 0 0 5px;
    color: var(--accent-dark);
    font-size: 12px;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.campaign-summary-top dd,
.campaign-summary-details p {
    margin: 0;
    color: var(--text);
    line-height: 1.6;
}
.campaign-summary-details {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
.campaign-summary-details div {
    border-top: 1px solid var(--line);
    padding-top: 12px;
}
.output-block {
    border-radius: 14px;
    background: var(--panel);
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(38, 34, 27, 0.06);
}
.output-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
}
.output-title h2 { margin: 0; font-size: 18px; }
pre {
    margin: 0;
    padding: 16px;
    white-space: pre-wrap;
    line-height: 1.55;
    color: var(--text);
}
.copyable-output {
    padding: 16px;
}
.structured-output {
    display: grid;
    gap: 28px;
}
.language-output {
    display: grid;
    gap: 22px;
}
.language-output + .language-output {
    margin-top: 8px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}
.language-output-title {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
}
.language-output h3 {
    margin: 0;
    padding: 13px 14px;
    border-left: 3px solid var(--accent);
    border-radius: 10px;
    background: rgba(180, 74, 30, 0.07);
    color: var(--text);
    font-size: 17px;
    letter-spacing: 0;
    font-family: var(--serif);
}
.structured-section {
    display: grid;
    gap: 14px;
    padding: 16px;
    border-radius: 12px;
    background: var(--panel-2);
}
.structured-section h4 {
    margin: 0;
    color: var(--accent-dark);
    font-size: 12px;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.structured-items {
    display: grid;
    gap: 13px;
}
.structured-field {
    display: grid;
    gap: 6px;
    padding: 14px;
    border-radius: 10px;
    background: rgba(38, 34, 27, 0.035);
}
.structured-items p {
    margin: 0;
    padding: 12px 13px;
    border-radius: 10px;
    background: #FFFFFF;
    color: var(--text);
    line-height: 1.68;
    box-shadow: 0 1px 2px rgba(38, 34, 27, 0.06);
}
.plain-output {
    padding: 4px 2px;
    white-space: pre-wrap;
    line-height: 1.9;
    font-family: inherit;
    color: var(--text);
}
.formatted-output {
    display: grid;
    gap: 14px;
    line-height: 1.55;
}
.language-heading {
    margin: 2px 0 0;
    padding: 11px 12px;
    border-left: 3px solid var(--accent);
    border-radius: 10px;
    background: rgba(180, 74, 30, 0.07);
    color: var(--text);
    font-size: 17px;
    letter-spacing: 0;
    font-family: var(--serif);
}
.ad-section {
    display: grid;
    gap: 9px;
    padding: 12px 12px 13px;
    border-radius: 10px;
    background: var(--panel-2);
}
.ad-section h4 {
    margin: 0;
    color: var(--accent-dark);
    font-size: 12px;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.ad-line {
    margin: 0;
    color: var(--text);
}
.ad-item {
    padding: 8px 10px;
    border-radius: 10px;
    background: #FFFFFF;
}
.actions { display: flex; gap: 12px; }
details {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel);
}
summary { cursor: pointer; padding: 14px 16px; }
.campaign-details-summary {
    margin: 0;
    padding: 0 16px 16px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.campaign-details-summary div {
    border-top: 1px solid var(--line);
    padding-top: 12px;
}
.campaign-details-summary dt {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 4px;
}
.campaign-details-summary dd {
    margin: 0;
    color: var(--text);
}
.advanced-json {
    margin: 0 16px 16px;
    background: var(--bg);
}
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(38, 34, 27, 0.4);
    opacity: 0;
    transition: opacity 180ms ease;
    backdrop-filter: blur(6px);
}
.loading-overlay[hidden] {
    display: none;
    pointer-events: none;
}
.loading-overlay.visible { opacity: 1; }
.loading-card {
    width: min(420px, 100%);
    display: grid;
    justify-items: center;
    gap: 12px;
    border-left: 3px solid var(--accent);
    border-radius: 14px;
    background: var(--panel);
    padding: 26px 22px;
    box-shadow: 0 22px 70px rgba(38, 34, 27, 0.25);
    text-align: center;
}
.loading-card strong {
    font-size: 18px;
    letter-spacing: 0;
}
.loading-card p {
    margin: 0;
    color: var(--muted);
}
.loading-spinner {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 3px solid rgba(38, 34, 27, 0.12);
    border-top-color: var(--accent);
    border-right-color: var(--accent-2);
    animation: spin 900ms linear infinite, pulse-ring 1800ms ease-in-out infinite;
}
button:disabled,
input:disabled,
textarea:disabled,
select:disabled {
    opacity: 0.62;
    cursor: wait;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes pulse-ring {
    0%, 100% { box-shadow: 0 0 0 0 rgba(180, 74, 30, 0.18); }
    50% { box-shadow: 0 0 0 8px rgba(180, 74, 30, 0); }
}

@media (max-width: 860px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { position: static; border-right: 0; border-bottom: 1px solid var(--line); }
    .main-panel { padding: 20px; }
    .grid.two, .output-grid, .campaign-details-summary { grid-template-columns: 1fr; }
    .result-header, .rename-form, .actions, .package-actions { flex-direction: column; align-items: stretch; }
    .campaign-summary-top, .campaign-summary-details { grid-template-columns: 1fr; }
    .demo-layout { grid-template-columns: 1fr; }
    .demo-brief { position: static; }
    .home-steps { grid-template-columns: 1fr; gap: 22px; }
    .home-hero { padding-top: 28px; }
    .home-limit { padding: 28px 20px; }
    .public-nav { row-gap: 10px; }
    .public-nav nav { gap: 14px; }
}

@media (max-width: 420px) {
    .public-nav { padding: 16px; }
    .public-main { padding: 12px 16px 56px; }
    .public-footer { padding: 18px 16px 28px; }
    .demo-brief, .demo-card { padding: 18px; }
    .demo-brief p { font-size: 18px; }
    .public-body .button-link { width: 100%; text-align: center; }
    .home-cta { justify-items: stretch; }
    .home-final .home-cta { justify-items: stretch; }
}