:root {
    --color-bg: #0b0f19;
    --color-surface: #131826;
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-text: #e5e7eb;
    --color-muted: #9ca3af;
    --color-border: #232b3d;
    --radius: 10px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

h1, h2, h3 { line-height: 1.2; margin-top: 0; }

.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--color-border); color: var(--color-text); }

.site-header {
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand { font-weight: 700; font-size: 1.25rem; color: var(--color-text); }
.brand span { color: var(--color-primary); }
.main-nav { display: flex; gap: 20px; }
.main-nav a { color: var(--color-muted); }
.nav-actions { display: flex; gap: 10px; }

.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 0 24px;
    margin-top: 64px;
    color: var(--color-muted);
}
.site-footer__inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 32px;
}
.footer-col { display: flex; flex-direction: column; gap: 10px; max-width: 320px; }
.footer-col__heading { color: var(--color-text); font-weight: 600; font-size: 0.9rem; }
.footer-tagline { margin: 0; font-size: 0.9rem; }
.footer-social { display: flex; gap: 12px; margin-top: 4px; }
.footer-social a { color: var(--color-muted); display: inline-flex; }
.footer-social a:hover { color: var(--color-primary); }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { font-size: 0.9rem; }
.site-footer__bottom {
    border-top: 1px solid var(--color-border);
    margin-top: 32px;
    padding-top: 16px;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .site-footer__inner { flex-direction: column; }
    .footer-col { max-width: none; }
}

.flash-stack { margin: 16px 0; }
.flash { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 8px; }
.flash-success { background: #064e3b; color: #6ee7b7; }
.flash-error { background: #450a0a; color: #fca5a5; }
.flash-info { background: #1e3a5f; color: #93c5fd; }
.flash-warning { background: #451a03; color: #fcd34d; }

.error-page { padding: 80px 0; text-align: center; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 0.9rem; color: var(--color-muted); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 1rem;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}
.form-group input:disabled { opacity: 0.6; }
.field-error { color: #fca5a5; font-size: 0.85rem; margin-top: 4px; }
.btn-block { width: 100%; }
.btn.is-loading { opacity: 0.65; cursor: wait; }
.form-aside-link { text-align: right; margin-bottom: 16px; font-size: 0.9rem; }

/* Auth layout */
.auth-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.auth-wrap { width: 100%; max-width: 420px; }
.auth-brand { display: block; text-align: center; margin-bottom: 24px; font-size: 1.5rem; }
.auth-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 16px; padding: 32px; }
.auth-subtext { color: var(--color-muted); margin-bottom: 24px; }
.auth-footer-link { text-align: center; margin-top: 20px; color: var(--color-muted); }

/* App shell (logged-in pages) */
.app-body { margin: 0; }
.app-shell { display: flex; min-height: 100vh; }
.app-sidebar {
    width: 240px;
    flex-shrink: 0;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
}
.app-sidebar .brand { display: block; margin-bottom: 32px; }
.app-sidebar__nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.app-sidebar__nav a { color: var(--color-muted); padding: 10px 12px; border-radius: var(--radius); }
.app-sidebar__nav a:hover { background: var(--color-bg); color: var(--color-text); }
.app-sidebar__nav a.active { background: var(--color-primary); color: #fff; }
.app-sidebar__logout { margin-top: 16px; }
.app-main { flex: 1; padding: 32px 40px; max-width: 1100px; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
    overflow-x: auto;
}

/* Accessibility: visible focus ring for keyboard navigation, skip link */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}
.skip-link {
    position: absolute; left: -9999px; top: 0; z-index: 1000;
    background: var(--color-primary); color: #fff; padding: 10px 16px; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

@media (max-width: 768px) {
    .app-shell { flex-direction: column; }
    .app-sidebar { width: 100%; flex-direction: row; align-items: center; overflow-x: auto; }
    .app-sidebar__nav { flex-direction: row; }
    .app-sidebar__logout { margin-top: 0; margin-left: auto; }
    .app-main { padding: 24px 16px; }
}

/* Hero */
.hero { padding: 80px 0 60px; text-align: center; }
.hero__inner { max-width: 760px; margin: 0 auto; }
.hero h1 { font-size: 2.5rem; margin-bottom: 16px; }
.hero__headline {
    opacity: 0;
    transform: translateY(16px);
    animation: heroHeadlineIn 0.7s ease-out 0.1s forwards;
}
.hero__highlight { color: var(--color-primary); }
@supports (background-clip: text) or (-webkit-background-clip: text) {
    .hero__highlight {
        background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark), var(--color-primary));
        background-size: 200% auto;
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        animation: heroHighlightShimmer 5s ease-in-out infinite;
    }
}
@keyframes heroHeadlineIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes heroHighlightShimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
@media (prefers-reduced-motion: reduce) {
    .hero__headline { animation: none; opacity: 1; transform: none; }
    .hero__highlight { animation: none; }
}
.hero__subtext { color: var(--color-muted); font-size: 1.1rem; margin-bottom: 32px; }
.hero__form { display: flex; gap: 8px; max-width: 520px; margin: 0 auto; }
.hero__form input { flex: 1; padding: 12px 16px; border-radius: var(--radius); border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); font-size: 1rem; }
.hero__form input:focus { outline: none; border-color: var(--color-primary); }
.hero__hint { margin-top: 12px; color: var(--color-muted); font-size: 0.9rem; }

/* How it works */
.how-it-works { padding: 60px 0; text-align: center; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; text-align: left; }
.step-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 24px; }
.step-number { width: 36px; height: 36px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 12px; }

/* Feature grid */
.feature-grid-section { padding: 60px 0; text-align: center; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 32px; text-align: left; }
.feature-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; }

/* Sample idea card */
.sample-section { padding: 60px 0; text-align: center; }
.sample-caption { color: var(--color-muted); margin-bottom: 32px; }
.idea-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 16px; padding: 28px; text-align: left; max-width: 760px; margin: 0 auto; }
.idea-card__head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.idea-card__tagline { color: var(--color-muted); margin: 4px 0 0; }
.score-badge { text-align: center; background: var(--color-bg); border: 2px solid var(--color-primary); border-radius: 12px; padding: 10px 16px; flex-shrink: 0; }
.score-badge__value { font-size: 1.8rem; font-weight: 700; color: var(--color-primary); }
.score-badge__label { color: var(--color-muted); font-size: 0.85rem; }
.score-bars { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.score-bar { display: grid; grid-template-columns: 140px 1fr; align-items: center; gap: 12px; font-size: 0.9rem; color: var(--color-muted); }
.score-bar .bar { height: 8px; background: var(--color-bg); border-radius: 4px; overflow: hidden; }
.score-bar .bar i { display: block; height: 100%; background: var(--color-primary); }
.idea-card__dims { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.idea-card__dims strong { display: block; margin-bottom: 4px; font-size: 0.9rem; }
.idea-card__dims p { margin: 0; color: var(--color-muted); font-size: 0.92rem; }
.sample-locked-note { margin-top: 20px; color: var(--color-muted); font-size: 0.85rem; text-align: center; }

/* CTA */
.cta-section { padding: 60px 0 100px; text-align: center; }
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }

/* Pricing */
.pricing-section { padding: 60px 0 100px; text-align: center; }
.pricing-subtext { color: var(--color-muted); margin-bottom: 32px; }
.billing-toggle { display: inline-flex; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 4px; margin-bottom: 40px; }
.toggle-btn { background: transparent; border: none; color: var(--color-muted); padding: 8px 18px; border-radius: 8px; cursor: pointer; font-weight: 600; }
.toggle-btn.active { background: var(--color-primary); color: #fff; }
.toggle-badge { font-size: 0.75rem; opacity: 0.85; margin-left: 4px; }
.plans-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; align-items: start; }
.plan-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 16px; padding: 28px; text-align: left; }
.plan-card--highlight { border-color: var(--color-primary); box-shadow: 0 0 0 1px var(--color-primary); }
.plan-price { font-size: 2rem; font-weight: 700; margin: 12px 0 20px; }
.plan-price span { font-size: 1rem; color: var(--color-muted); font-weight: 400; }
.plan-features { list-style: none; padding: 0; margin: 0 0 24px; display: flex; flex-direction: column; gap: 10px; color: var(--color-muted); font-size: 0.92rem; }
.plan-features li::before { content: "✓ "; color: var(--color-primary); font-weight: 700; }

/* About / Contact */
.about-section, .contact-section { padding: 60px 0 100px; max-width: 760px; }
.about-section p { color: var(--color-muted); margin-bottom: 16px; }
.contact-subtext { color: var(--color-muted); margin-bottom: 24px; }
.contact-form { max-width: 560px; }
.honeypot-field { position: absolute; left: -9999px; top: -9999px; }

/* Legal pages */
.legal-section { padding: 60px 0 100px; max-width: 760px; }
.legal-section h2 { margin-top: 32px; }
.legal-section p, .legal-section li { color: var(--color-muted); }
.legal-updated { color: var(--color-muted); font-size: 0.85rem; margin-bottom: 32px; }

/* FAQ */
.faq-section { padding: 60px 0 100px; max-width: 760px; }
.faq-subtext { color: var(--color-muted); margin-bottom: 32px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 4px 20px; }
.faq-item summary { cursor: pointer; padding: 16px 0; font-weight: 600; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--color-primary); }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { color: var(--color-muted); margin: 0 0 16px; }

@media (max-width: 768px) {
    .steps-grid, .feature-grid { grid-template-columns: 1fr; }
    .idea-card__dims { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.8rem; }
    .hero__form { flex-direction: column; }
}

/* Payment methods / checkout */
.payment-methods-list { display: flex; flex-direction: column; gap: 12px; }
.payment-method-row {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 16px; border: 1px solid var(--color-border); border-radius: var(--radius);
}
.payment-method-row__type { color: var(--color-muted); font-size: 0.85rem; margin: 4px 0 0; }
.config-table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.config-table th, .config-table td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
.config-table th { color: var(--color-muted); width: 40%; }

/* Badges */
.badge { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; }
.badge-success { background: #064e3b; color: #6ee7b7; }
.badge-warning { background: #451a03; color: #fcd34d; }
.badge-error { background: #450a0a; color: #fca5a5; }

/* Receipt */
.receipt-card { max-width: 560px; }
.receipt-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--color-border); gap: 16px; }
.receipt-row span:first-child { color: var(--color-muted); }
.receipt-row--proof { flex-direction: column; align-items: flex-start; gap: 8px; }
.receipt-proof-img { max-width: 100%; border-radius: var(--radius); border: 1px solid var(--color-border); }
.receipt-note { margin-top: 16px; padding: 12px; background: #450a0a; color: #fca5a5; border-radius: var(--radius); }
.receipt-pending-note { margin-top: 16px; color: var(--color-muted); }

/* Dashboard */
.dashboard-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 24px; }
.stat-card { display: flex; flex-direction: column; gap: 4px; }
.stat-card__label { color: var(--color-muted); font-size: 0.85rem; }
.stat-card__value { font-size: 1.8rem; font-weight: 700; }
.stat-card__sub { color: var(--color-muted); font-size: 0.85rem; }
.stat-card__link { font-size: 0.85rem; margin-top: 4px; }
.quick-search-form { display: flex; gap: 8px; }
.quick-search-form input { flex: 1; padding: 10px 12px; border-radius: var(--radius); border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text); }
.recent-reports-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.recent-reports-list li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--color-border); }
.report-meta { color: var(--color-muted); font-size: 0.85rem; }

/* Tables / pagination */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
.data-table th { color: var(--color-muted); font-weight: 600; }
.pagination { display: flex; gap: 6px; margin-top: 16px; }
.pagination a { padding: 6px 12px; border-radius: var(--radius); border: 1px solid var(--color-border); color: var(--color-muted); }
.pagination a.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* Report view */
.report-idea { margin-bottom: 20px; }
.mvp-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mvp-columns ul { padding-left: 18px; color: var(--color-muted); font-size: 0.9rem; }
.builder-section summary { cursor: pointer; }
.builder-section summary h2 { display: inline; }
.builder-block { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--color-border); }
.builder-block p { color: var(--color-muted); font-size: 0.92rem; }

@media (max-width: 768px) {
    .dashboard-grid { grid-template-columns: 1fr; }
    .mvp-columns { grid-template-columns: 1fr; }
}

/* Report view: header row, locked dimensions, print */
.report-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 8px; }
.locked-badge { opacity: 0.5; filter: blur(2px); cursor: not-allowed; }
.locked-dimension {
    position: relative; padding: 16px; border-radius: var(--radius);
    background: var(--color-bg); border: 1px dashed var(--color-border);
}
.locked-dimension__blur { color: var(--color-muted); filter: blur(3px); user-select: none; font-size: 0.9rem; }
.locked-dimension__cta {
    display: inline-block; margin-top: 8px; font-size: 0.85rem; font-weight: 600;
    color: var(--color-primary);
}
.form-checkbox label { display: flex; align-items: center; gap: 8px; font-weight: 400; color: var(--color-text); }
.form-checkbox input { width: auto; }
.tool-loading-note { margin-top: 12px; color: var(--color-muted); }

/* Admin */
.brand small { font-size: 0.6em; color: var(--color-muted); font-weight: 400; }
.admin-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }
.admin-search-form { display: flex; gap: 8px; }
.admin-search-form input { padding: 8px 12px; border-radius: var(--radius); border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text); min-width: 240px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; }
.form-inline { display: flex; gap: 8px; align-items: center; }
.form-inline input { padding: 8px 12px; border-radius: var(--radius); border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text); }
.btn-danger { background: #7f1d1d; color: #fff; border: none; }
.btn-danger:hover { background: #991b1b; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85rem; }
.status-filter { display: flex; gap: 8px; }
.status-filter a { padding: 6px 14px; border-radius: var(--radius); border: 1px solid var(--color-border); color: var(--color-muted); }
.status-filter a.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.settings-tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.settings-tabs a { padding: 8px 16px; border-radius: var(--radius); border: 1px solid var(--color-border); color: var(--color-muted); }
.settings-tabs a.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.unread-row { font-weight: 600; }

/* Enterprise features: upgrade prompts, refine, share links, compare */
.upgrade-prompt { font-style: italic; }
.idea-card__refinements { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--color-border); }
.idea-card__refinements h3 { font-size: 1rem; margin-bottom: 8px; }
.refinement { margin-bottom: 10px; font-size: 0.92rem; }
.refinement__question { color: var(--color-text); margin: 0 0 2px; }
.refinement__answer { color: var(--color-muted); margin: 0; }
.refine-form { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; align-items: center; }
.refine-form select, .refine-form input[type="text"] { padding: 8px 12px; border-radius: var(--radius); border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text); }
.refine-form input[type="text"] { flex: 1; min-width: 200px; }
.share-link-row { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.share-link-row input[type="text"] { flex: 1; padding: 8px 12px; border-radius: var(--radius); border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text); }
.compare-grid { display: grid; grid-template-columns: repeat(var(--cols, 2), 1fr); gap: 20px; align-items: start; }
.compare-column .card { margin-bottom: 16px; }
.print-header { display: none; }
/* Public shared-report page has no site header/sidebar of its own — show the branding header on screen too, not just when printed. */
.shared-report-main .print-header { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--color-border); font-weight: 700; font-size: 1.2rem; }
.shared-report-main .print-header img { max-height: 40px; }

@media print {
    .site-header, .site-footer, .app-sidebar, .no-print { display: none !important; }
    .app-main { padding: 0; max-width: none; }
    body { background: #fff; color: #000; }
    .card, .idea-card { border-color: #ccc; }
    .print-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; font-weight: 700; font-size: 1.1rem; }
    .print-header img { max-height: 36px; }
}

@media (max-width: 900px) {
    .compare-grid { grid-template-columns: 1fr; }
}