:root {
    --color-bg: #f4f5f7;
    --color-surface: #ffffff;
    --color-border: #e0e0e0;
    --color-border-strong: #c6c6c6;
    --color-text: #1c1c1c;
    --color-muted: #6b6b6b;
    --color-muted-strong: #9c9c9c;
    --color-accent: #2CA01C;
    --color-accent-strong: #1e8e14;
    --color-accent-muted: rgba(44, 160, 28, 0.1);
    --font-sans: 'Geist', 'Geist Sans', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Geist Mono', 'SFMono-Regular', ui-monospace, monospace;
    --radius-sm: 2px;
    --ease-snap: cubic-bezier(0.2, 0, 0, 1);

    /* Legacy tokens for older templates */
    --color-ink: var(--color-text);
    --color-charcoal: var(--color-text);
    --color-slate: var(--color-muted);
    --color-mist: var(--color-muted-strong);
    --color-paper: var(--color-surface);
    --color-cream: var(--color-bg);
    --color-vault: var(--color-accent);
    --color-vault-light: var(--color-accent-strong);
    --color-vault-glow: var(--color-accent-muted);
    --font-serif: var(--font-sans);
    --ease-smooth: var(--ease-snap);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s var(--ease-snap), color 0.15s var(--ease-snap);
}

a:hover {
    border-bottom-color: var(--color-accent);
}

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--color-border);
}

nav {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-text);
    transition: color 0.15s var(--ease-snap);
}

.logo-group:hover {
    color: var(--color-accent);
}

.logo-group img {
    width: 30px;
    height: 30px;
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: inherit;
}

.back-link {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.15s var(--ease-snap), border-color 0.15s var(--ease-snap);
}

.back-link:hover {
    color: var(--color-text);
    border-bottom-color: var(--color-accent);
}

main {
    max-width: 860px;
    margin: 0 auto;
    padding: 4.5rem 2rem 6rem;
}

.lab-full {
    max-width: none;
    padding: 0;
}

.page-header {
    margin-bottom: 2.5rem;
    text-align: left;
}

.page-category {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

h1 {
    font-family: var(--font-sans);
    font-size: clamp(2.4rem, 5vw, 3.4rem);
    font-weight: 600;
    line-height: 1.15;
    color: var(--color-text);
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

h2 {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 2rem 0 1rem;
    letter-spacing: -0.01em;
}

h2:first-child {
    margin-top: 0;
}

.meta {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted-strong);
}

.content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2.5rem;
}

p {
    margin: 0 0 1.25rem;
    color: var(--color-text);
}

ul,
ol {
    margin: 0 0 1.25rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

li:last-child {
    margin-bottom: 0;
}

strong {
    font-weight: 600;
    color: var(--color-text);
}

footer {
    background: var(--color-surface);
    color: var(--color-muted);
    padding: 3rem 2rem 2rem;
    border-top: 1px solid var(--color-border);
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    text-align: left;
}

.footer-contact {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    margin-bottom: 1rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.footer-contact a {
    color: var(--color-accent);
    border-bottom: 1px solid transparent;
}

.footer-contact a:hover {
    border-bottom-color: var(--color-accent);
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-bottom: 0.5rem;
}

.footer-links {
    font-size: 0.875rem;
    line-height: 2;
    color: var(--color-muted);
}

.footer-links a {
    color: var(--color-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.15s var(--ease-snap), border-color 0.15s var(--ease-snap);
}

.footer-links a:hover {
    color: var(--color-text);
    border-bottom-color: var(--color-accent);
}

.footer-separator {
    margin: 0 0.5rem;
    opacity: 0.5;
}

/* Shared component styling */
.hero-section {
    background: transparent;
}

.btn-qb {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    cursor: pointer;
    transition: border-color 0.15s var(--ease-snap);
}

.btn-qb:hover {
    border-color: var(--color-accent);
}

.btn-qb img {
    display: block;
    height: 44px;
}

.lab-center {
    text-align: center;
}

.success-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    color: var(--color-text);
    max-width: 480px;
    margin: 0 auto;
}

.modal-themed-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    color: var(--color-text);
}

.modal-themed-header,
.modal-themed-footer {
    border-color: var(--color-border);
}

.btn-primary-themed {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: #ffffff;
    transition: background-color 0.15s var(--ease-snap), border-color 0.15s var(--ease-snap);
}

.btn-primary-themed:hover {
    background-color: var(--color-accent-strong);
    border-color: var(--color-accent-strong);
}

.btn-secondary-themed {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-muted);
    transition: background-color 0.15s var(--ease-snap), border-color 0.15s var(--ease-snap), color 0.15s var(--ease-snap);
}

.btn-secondary-themed:hover {
    background-color: var(--color-accent-muted);
    border-color: var(--color-accent);
    color: var(--color-text);
}

.progress-bar {
    height: 2px;
    background-color: var(--color-border);
    border-radius: 0;
    margin-bottom: 8px;
}

.progress-fill {
    background-color: var(--color-accent);
    height: 100%;
    border-radius: 0;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.pulse-glow {
    background: var(--color-surface);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    box-shadow: none;
    animation: none;
}

.status-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: 2px;
    color: var(--color-accent);
    margin: 0 auto 24px;
}

.status-icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.status-title {
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-muted-strong);
}

.status-subtitle {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text);
}

.status-panel {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 12px;
    margin-top: 24px;
    display: grid;
    gap: 0.75rem;
    text-align: left;
}

.status-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
}

.status-value {
    color: var(--color-accent);
    font-weight: 600;
}

.status-spinner-icon {
    width: 14px;
    height: 14px;
    fill: currentColor;
    color: var(--color-muted-strong);
}

.status-footnote {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-muted-strong);
}

.animate-spin {
    animation: spin 2s linear infinite;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-accent-muted);
    border-left-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

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

.stripe-input {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--color-text);
    width: 100%;
    font-size: 16px;
    transition: border-color 0.15s var(--ease-snap);
    line-height: 1.5;
}

.stripe-input::placeholder {
    color: var(--color-muted-strong);
}

input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 0;
    border-color: var(--color-accent);
}

/* Tailwind utility overrides for lab theme */
.bg-white {
    background-color: var(--color-surface) !important;
}

.bg-slate-100 {
    background-color: #f1f3f5 !important;
}

.bg-slate-50\/70 {
    background-color: rgba(248, 250, 252, 0.9) !important;
}

.bg-slate-900\/50 {
    background-color: rgba(0, 0, 0, 0.35) !important;
}

.bg-blue-600 {
    background-color: var(--color-accent) !important;
}

.hover\:bg-blue-700:hover {
    background-color: var(--color-accent-strong) !important;
}

.border-slate-200,
.border-slate-200\/50,
.border-slate-100 {
    border-color: var(--color-border) !important;
}

.text-slate-900,
.text-slate-800,
.text-slate-700 {
    color: var(--color-text) !important;
}

.text-slate-600,
.text-slate-500 {
    color: var(--color-muted) !important;
}

.text-slate-400 {
    color: var(--color-muted-strong) !important;
}

.hover\:text-slate-900:hover {
    color: var(--color-text) !important;
}

.font-mono {
    font-family: var(--font-mono) !important;
}

@media (max-width: 768px) {
    nav {
        padding: 1rem 1.5rem;
    }

    main {
        padding: 3.5rem 1.5rem 4.5rem;
    }

    .page-header {
        text-align: center;
    }

    .content {
        padding: 2rem 1.5rem;
    }

    .footer-container {
        text-align: center;
    }

    .footer-links {
        line-height: 1.6;
    }

    .footer-links .footer-separator {
        display: none;
    }

    .footer-links a {
        display: inline-block;
        padding: 0.25rem 0.5rem;
    }
}