/* ============================================
   SystemFlow — Document/Notion Style, Single Column
   No grids, no cards, pure text-driven layout
   ============================================ */

:root {
    --color-bg: #ffffff;
    --color-surface: #f7f7f7;
    --color-border: #e2e2e2;
    --color-text: #171717;
    --color-text-secondary: #737373;
    --color-accent: #171717;
    --radius: 10px;
    --transition: 0.15s ease;
}

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

body {
    font-family: 'IBM Plex Sans', -apple-system, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

.doc-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Top Strip --- */
.top-strip {
    background: var(--color-accent);
    color: #fff;
    text-align: center;
    padding: 8px 16px;
    font-size: 13px;
}

.top-strip a {
    color: #fff;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* --- Header (not fixed, flows with content) --- */
.header {
    padding: 20px 0;
}

.inline-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 600;
    font-size: 16px;
}

.inline-nav-links {
    display: flex;
    gap: 24px;
}

.inline-nav-links a {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition);
}

.inline-nav-links a:hover { color: var(--color-text); }

/* --- Hero (left-aligned, no centering) --- */
.doc-hero {
    padding: 60px 0 48px;
}

.doc-hero h1 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.doc-hero > p {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 560px;
    margin-bottom: 36px;
}

.hero-bar {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 20px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.hero-metric { display: flex; flex-direction: column; }

.hm-val {
    font-size: 28px;
    font-weight: 700;
    font-family: 'IBM Plex Mono', monospace;
    letter-spacing: -0.02em;
}

.hm-label {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-family: 'IBM Plex Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.hero-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* --- Divider --- */
.divider {
    border: none;
    height: 1px;
    background: var(--color-border);
    margin: 48px 0;
}

/* --- Section Labels --- */
.section-label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 28px;
}

.section-label h2 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.label-note {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* --- System Rows (full-width horizontal blocks) --- */
.system-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 24px 0;
    border-bottom: 1px solid var(--color-border);
}

.system-row:first-of-type {
    border-top: 1px solid var(--color-border);
}

.system-row.featured {
    background: var(--color-surface);
    margin: 0 -24px;
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.sr-left {
    display: flex;
    gap: 20px;
    flex: 1;
}

.sr-number {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 14px;
    color: var(--color-text-secondary);
    padding-top: 2px;
    flex-shrink: 0;
    width: 28px;
}

.sr-info { flex: 1; }

.sr-top {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.sr-info h3 {
    font-size: 18px;
    font-weight: 600;
}

.sr-tag {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    border-radius: 4px;
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    font-family: 'IBM Plex Mono', monospace;
}

.sr-tag.primary {
    background: var(--color-text);
    color: #fff;
    border-color: var(--color-text);
}

.sr-info p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 10px;
}

.sr-specs {
    display: flex;
    gap: 16px;
}

.sr-specs span {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-family: 'IBM Plex Mono', monospace;
}

.sr-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    flex-shrink: 0;
    padding-left: 32px;
}

.sr-price {
    font-size: 28px;
    font-weight: 700;
    font-family: 'IBM Plex Mono', monospace;
}

.link-arrow {
    font-size: 13px;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    transition: opacity var(--transition);
}

.link-arrow:hover { opacity: 0.6; }

/* --- Template Table --- */
.template-table {
    width: 100%;
    border-collapse: collapse;
}

.template-table th {
    text-align: left;
    padding: 10px 0;
    border-bottom: 2px solid var(--color-text);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: 'IBM Plex Mono', monospace;
    color: var(--color-text-secondary);
}

.template-table th:last-child { text-align: right; }

.template-table td {
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
    vertical-align: middle;
}

.template-table td:last-child { text-align: right; }

.tt-name { font-weight: 600; }

.tt-cat {
    font-size: 11px;
    padding: 3px 8px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: 'IBM Plex Mono', monospace;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.tt-mono {
    font-family: 'IBM Plex Mono', monospace;
    color: var(--color-text-secondary);
}

.tt-price {
    font-weight: 700;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 16px;
}

/* --- Bundle Block (two columns) --- */
.bundle-block {
    display: flex;
    gap: 48px;
    align-items: flex-start;
}

.bundle-left { flex: 1; }

.bundle-label {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 3px 8px;
    background: var(--color-text);
    color: #fff;
    border-radius: 4px;
    font-family: 'IBM Plex Mono', monospace;
    margin-bottom: 12px;
}

.bundle-left h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}

.bundle-left p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.bundle-list {
    list-style: none;
}

.bundle-list li {
    font-size: 14px;
    color: var(--color-text-secondary);
    padding: 5px 0;
    padding-left: 16px;
    position: relative;
}

.bundle-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    opacity: 0.4;
}

.bundle-right {
    flex-shrink: 0;
    width: 200px;
    text-align: center;
    padding-top: 20px;
}

.bundle-pricing { margin-bottom: 16px; }

.bp-price {
    display: block;
    font-size: 48px;
    font-weight: 700;
    font-family: 'IBM Plex Mono', monospace;
    letter-spacing: -0.03em;
}

.bp-original {
    font-size: 16px;
    color: var(--color-text-secondary);
    text-decoration: line-through;
    margin-right: 8px;
}

.bp-save {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'IBM Plex Mono', monospace;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: all var(--transition);
    background: var(--color-accent);
    color: #fff;
    width: 100%;
}

.btn:hover { opacity: 0.85; }

.bp-note {
    display: block;
    margin-top: 10px;
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* --- Footer --- */
.doc-footer {
    padding: 32px 0;
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-secondary);
    font-family: 'IBM Plex Mono', monospace;
}

.df-links { display: flex; gap: 16px; }
.df-links a { color: var(--color-text-secondary); text-decoration: none; }
.df-links a:hover { color: var(--color-text); }

/* --- Scroll Animations --- */

/* Top strip slide down */
.top-strip {
    transform: translateY(-100%);
    opacity: 0;
}

.top-strip.strip-animate {
    animation: slideDown 0.5s ease forwards;
}

@keyframes slideDown {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* System rows */
.system-row {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.system-row.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Template table rows */
.template-table tbody tr {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.template-table tbody tr.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Bundle block */
.bundle-block {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.bundle-block.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Metric fill bars */
.metric-fill {
    transition: width 0.5s ease;
}

/* --- Cart Badge --- */
.cart-link {
    position: relative;
}

.cart-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    font-family: 'IBM Plex Mono', monospace;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    padding: 0 5px;
    margin-left: 4px;
    vertical-align: middle;
}

/* --- Search Bar --- */
.search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    transition: border-color var(--transition);
}
.search-bar:focus-within { border-color: var(--color-text); }
.search-bar input {
    background: transparent;
    border: none;
    color: var(--color-text);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    width: 100%;
}
.search-bar input::placeholder { color: var(--color-text-secondary); }

@keyframes toastSlide {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .hero-bar { flex-wrap: wrap; gap: 16px; }
    .hero-divider { display: none; }
    .system-row { flex-direction: column; gap: 16px; }
    .system-row.featured { margin: 0 -16px; padding: 20px 16px; }
    .sr-right { flex-direction: row; align-items: center; padding-left: 48px; }
    .template-table th:nth-child(3),
    .template-table td:nth-child(3) { display: none; }
    .bundle-block { flex-direction: column; gap: 32px; }
    .bundle-right { width: 100%; text-align: left; }
    .bp-price { display: inline; }
    .btn { width: auto; }
    .inline-nav-links { gap: 16px; }
}