/* =====================================================================
Folio — system.css
An eternally simple, paper-thin design system. Warm bone neutrals,
pure white surface cards, hairline borders, serif marquee headlines,
and one ink-black action color. Reduce, never decorate.
===================================================================== */
/* Fonts are loaded via a single in the HTML to avoid
render-blocking @import chains. */
/* ---------------------------------------------------------------------
Tokens
--------------------------------------------------------------------- */
:root {
/* Color — warm monochrome only */
--folio-bone: #efece4;
--folio-snow: #ffffff;
--folio-ink: #13120f;
--folio-stone: #6c6a62;
--folio-mist: #e4dfd4;
--folio-whisper: #f6f3eb;
/* Semantic color aliases */
--color-bg: var(--folio-bone);
--color-surface: var(--folio-snow);
--color-surface-subtle: var(--folio-whisper);
--color-text: var(--folio-ink);
--color-text-muted: var(--folio-stone);
--color-border: var(--folio-mist);
--color-action: var(--folio-ink);
--color-on-action: var(--folio-snow);
--color-focus: var(--folio-ink);
/* Typography */
--font-display: "Instrument Serif", "Cormorant Garamond", "Times New Roman", serif;
--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
--text-display: clamp(3.5rem, 6vw + 0.5rem, 6rem); /* 56-96 */
--text-headline-lg: clamp(2.25rem, 3.5vw + 0.5rem, 3.5rem); /* 36-56 */
--text-headline-md: clamp(1.625rem, 1.2vw + 1rem, 2rem); /* 26-32 */
--text-body-md: 1rem; /* 16 */
--text-body-sm: 0.875rem; /* 14 */
--text-label-sm: 0.75rem; /* 12 */
--leading-display: 1.05;
--leading-headline: 1.15;
--leading-body: 1.55;
--leading-tight: 1.3;
--tracking-tight: -0.02em;
--tracking-normal: 0;
--tracking-wide: 0.14em;
/* Spacing scale (4px base) */
--space-3xs: 0.25rem; /* 4 */
--space-2xs: 0.5rem; /* 8 */
--space-xs: 0.75rem; /* 12 */
--space-sm: 1rem; /* 16 */
--space-md: 1.5rem; /* 24 */
--space-lg: 2rem; /* 32 */
--space-xl: 3rem; /* 48 */
--space-2xl: 4.5rem; /* 72 */
--space-3xl: 6rem; /* 96 */
/* Radius scale */
--radius-none: 0;
--radius-sm: 4px;
--radius-md: 10px;
--radius-lg: 14px;
--radius-xl: 22px;
--radius-full: 999px;
/* Borders */
--border-hairline: 1px solid var(--color-border);
--border-ink: 1px solid var(--color-text);
/* Elevation — almost none */
--elev-none: none;
--elev-paper: 0 1px 0 rgba(0, 0, 0, 0.03), 0 24px 60px -32px rgba(19, 18, 15, 0.18);
/* Focus */
--focus-ring: 2px solid var(--color-focus);
--focus-offset: 2px;
/* Layout */
--container-max: 1200px;
--container-pad: clamp(1.25rem, 4vw, 3rem);
--section-rhythm: clamp(3rem, 6vw, 6rem);
/* Motion */
--ease-quiet: cubic-bezier(0.2, 0.7, 0.2, 1);
--dur-fast: 120ms;
--dur-base: 200ms;
}
/* ---------------------------------------------------------------------
Base
--------------------------------------------------------------------- */
*,
*::before,
*::after {
box-sizing: border-box;
}
html {
-webkit-text-size-adjust: 100%;
text-size-adjust: 100%;
}
body {
margin: 0;
background-color: var(--color-bg);
color: var(--color-text);
font-family: var(--font-body);
font-size: var(--text-body-md);
line-height: var(--leading-body);
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
font-feature-settings: "ss01", "cv11";
}
::selection {
background: var(--color-text);
color: var(--color-surface);
}
img,
svg,
video {
display: block;
max-width: 100%;
}
a {
color: inherit;
text-decoration: none;
border-bottom: 1px solid var(--color-border);
transition: border-color var(--dur-base) var(--ease-quiet);
}
a:hover {
border-bottom-color: var(--color-text);
}
:focus-visible {
outline: var(--focus-ring);
outline-offset: var(--focus-offset);
border-radius: var(--radius-sm);
}
hr {
border: 0;
border-top: var(--border-hairline);
margin: var(--space-lg) 0;
}
/* ---------------------------------------------------------------------
Typography classes
--------------------------------------------------------------------- */
.display,
.headline-lg,
.headline-md,
h1,
h2,
h3 {
font-family: var(--font-display);
font-weight: 400;
color: var(--color-text);
letter-spacing: var(--tracking-tight);
margin: 0;
}
.display {
font-size: var(--text-display);
line-height: var(--leading-display);
}
h1,
.headline-lg {
font-size: var(--text-headline-lg);
line-height: var(--leading-headline);
}
h2,
.headline-md {
font-size: var(--text-headline-md);
line-height: var(--leading-headline);
}
h3 {
font-size: 1.25rem;
line-height: var(--leading-tight);
letter-spacing: var(--tracking-normal);
}
.italic-display {
font-family: var(--font-display);
font-style: italic;
font-weight: 400;
}
p,
.body-md {
font-family: var(--font-body);
font-size: var(--text-body-md);
line-height: var(--leading-body);
color: var(--color-text-muted);
margin: 0;
}
.body-sm {
font-family: var(--font-body);
font-size: var(--text-body-sm);
line-height: var(--leading-body);
color: var(--color-text-muted);
}
.label-sm {
font-family: var(--font-body);
font-size: var(--text-label-sm);
font-weight: 500;
line-height: 1.4;
letter-spacing: var(--tracking-wide);
text-transform: uppercase;
color: var(--color-text-muted);
}
.text-ink {
color: var(--color-text);
}
.text-muted {
color: var(--color-text-muted);
}
/* ---------------------------------------------------------------------
Layout primitives
--------------------------------------------------------------------- */
.container {
width: 100%;
max-width: var(--container-max);
margin-inline: auto;
padding-inline: var(--container-pad);
}
.stack {
display: flex;
flex-direction: column;
gap: var(--space-md);
}
.row {
display: flex;
align-items: center;
gap: var(--space-sm);
flex-wrap: wrap;
}
.section {
padding-block: var(--section-rhythm);
}
.split {
display: grid;
grid-template-columns: 1fr;
gap: 0;
align-items: stretch;
}
@media (min-width: 880px) {
.split {
grid-template-columns: 1fr 1fr;
}
}
/* ---------------------------------------------------------------------
Brand mark — Folio four-point spark
--------------------------------------------------------------------- */
.brand {
display: inline-flex;
align-items: center;
gap: 0.5rem;
color: var(--color-text);
border-bottom: 0;
}
.brand-mark {
width: 18px;
height: 18px;
color: var(--color-text);
flex: none;
}
.brand-wordmark {
font-family: var(--font-display);
font-style: italic;
font-size: 1.25rem;
line-height: 1;
letter-spacing: -0.01em;
}
.spark {
display: inline-block;
width: 12px;
height: 12px;
color: var(--color-text);
vertical-align: middle;
}
.spark--bullet {
width: 10px;
height: 10px;
margin-right: 0.5rem;
}
/* ---------------------------------------------------------------------
Surfaces — card, panel, leaf
--------------------------------------------------------------------- */
.card {
background-color: var(--color-surface);
border: var(--border-hairline);
border-radius: var(--radius-lg);
padding: clamp(1.5rem, 3vw, 3rem);
}
.card--leaf {
box-shadow: var(--elev-paper);
}
.panel {
background-color: var(--color-surface);
border: var(--border-hairline);
border-radius: var(--radius-md);
padding: var(--space-md);
}
.panel--subtle {
background-color: var(--color-surface-subtle);
border-color: transparent;
}
/* ---------------------------------------------------------------------
Buttons — pill, ink primary and hairline secondary
--------------------------------------------------------------------- */
.btn {
--btn-bg: var(--color-text);
--btn-fg: var(--color-on-action);
--btn-border: var(--color-text);
display: inline-flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
font-family: var(--font-body);
font-size: var(--text-body-sm);
font-weight: 500;
line-height: 1;
letter-spacing: 0.005em;
padding: 0.75rem 1.25rem;
border-radius: var(--radius-full);
border: 1px solid var(--btn-border);
background-color: var(--btn-bg);
color: var(--btn-fg);
cursor: pointer;
transition: transform var(--dur-base) var(--ease-quiet),
background-color var(--dur-base) var(--ease-quiet),
color var(--dur-base) var(--ease-quiet);
text-decoration: none;
}
.btn:hover {
transform: translateY(-1px);
}
.btn:focus-visible {
outline: var(--focus-ring);
outline-offset: var(--focus-offset);
}
.btn--primary {
--btn-bg: var(--color-text);
--btn-fg: var(--color-on-action);
--btn-border: var(--color-text);
}
.btn--secondary {
--btn-bg: var(--color-surface);
--btn-fg: var(--color-text);
--btn-border: var(--color-border);
}
.btn--secondary:hover {
--btn-bg: var(--color-surface-subtle);
}
.btn--ghost {
--btn-bg: transparent;
--btn-fg: var(--color-text);
--btn-border: transparent;
}
.btn--ghost:hover {
--btn-bg: var(--color-surface-subtle);
}
.btn--sm {
padding: 0.5rem 1rem;
font-size: var(--text-label-sm);
}
.btn--lg {
padding: 0.9rem 1.5rem;
font-size: var(--text-body-md);
}
/* ---------------------------------------------------------------------
Inputs and form fields
--------------------------------------------------------------------- */
.field {
display: flex;
flex-direction: column;
gap: var(--space-2xs);
}
.field-label {
font-family: var(--font-body);
font-size: var(--text-body-sm);
font-weight: 500;
color: var(--color-text);
}
.field-hint {
font-family: var(--font-body);
font-size: var(--text-label-sm);
color: var(--color-text-muted);
}
.input,
.textarea,
.select {
font-family: var(--font-body);
font-size: var(--text-body-md);
color: var(--color-text);
background-color: var(--color-surface);
border: 1px solid var(--color-border);
border-radius: var(--radius-md);
padding: 0.75rem 0.875rem;
width: 100%;
line-height: 1.4;
transition: border-color var(--dur-base) var(--ease-quiet);
}
.input::placeholder,
.textarea::placeholder {
color: var(--color-text-muted);
}
.input:focus,
.textarea:focus,
.select:focus {
outline: var(--focus-ring);
outline-offset: 0;
border-color: var(--color-text);
}
.textarea {
min-height: 6rem;
resize: vertical;
}
.select {
appearance: none;
background-image: url("data:image/svg+xml;utf8,");
background-repeat: no-repeat;
background-position: right 0.875rem center;
padding-right: 2.25rem;
}
/* ---------------------------------------------------------------------
Checkbox
--------------------------------------------------------------------- */
.checkbox {
display: inline-flex;
align-items: center;
gap: 0.625rem;
cursor: pointer;
font-size: var(--text-body-sm);
color: var(--color-text);
}
.checkbox input {
position: absolute;
opacity: 0;
pointer-events: none;
}
.checkbox-box {
width: 16px;
height: 16px;
border: 1px solid var(--color-border);
border-radius: var(--radius-sm);
background-color: var(--color-surface);
display: inline-flex;
align-items: center;
justify-content: center;
transition: background-color var(--dur-fast) var(--ease-quiet),
border-color var(--dur-fast) var(--ease-quiet);
flex: none;
}
.checkbox-box svg {
width: 10px;
height: 10px;
color: var(--color-surface);
opacity: 0;
transition: opacity var(--dur-fast) var(--ease-quiet);
}
.checkbox input:checked + .checkbox-box {
background-color: var(--color-text);
border-color: var(--color-text);
}
.checkbox input:checked + .checkbox-box svg {
opacity: 1;
}
.checkbox input:focus-visible + .checkbox-box {
outline: var(--focus-ring);
outline-offset: var(--focus-offset);
}
/* ---------------------------------------------------------------------
Tabs — text-only with hairline underline
--------------------------------------------------------------------- */
.tabs {
display: flex;
gap: var(--space-md);
border-bottom: var(--border-hairline);
}
.tab {
font-family: var(--font-body);
font-size: var(--text-body-sm);
font-weight: 500;
color: var(--color-text-muted);
padding: 0 0 0.625rem 0;
background: none;
border: 0;
border-bottom: 1px solid transparent;
margin-bottom: -1px;
cursor: pointer;
transition: color var(--dur-base) var(--ease-quiet),
border-color var(--dur-base) var(--ease-quiet);
}
.tab:hover {
color: var(--color-text);
}
.tab[aria-selected="true"],
.tab--active {
color: var(--color-text);
border-bottom-color: var(--color-text);
}
/* ---------------------------------------------------------------------
Lists — feature bullets using the four-point spark
--------------------------------------------------------------------- */
.feature-list {
list-style: none;
padding: 0;
margin: 0;
display: flex;
flex-direction: column;
gap: 0.5rem;
}
.feature-list li {
display: flex;
align-items: baseline;
gap: 0.625rem;
font-size: var(--text-body-sm);
color: var(--color-text-muted);
}
.feature-list li::before {
content: "";
width: 5px;
height: 5px;
background-color: var(--color-text);
border-radius: 50%;
flex: none;
transform: translateY(-2px);
}
/* ---------------------------------------------------------------------
Divider with optional centered spark
--------------------------------------------------------------------- */
.divider {
display: flex;
align-items: center;
gap: 0.75rem;
color: var(--color-border);
}
.divider::before,
.divider::after {
content: "";
flex: 1;
border-top: var(--border-hairline);
}
.divider .spark {
color: var(--color-text);
}
/* ---------------------------------------------------------------------
Tag / quiet pill
--------------------------------------------------------------------- */
.tag {
display: inline-flex;
align-items: center;
gap: 0.375rem;
font-family: var(--font-body);
font-size: var(--text-label-sm);
color: var(--color-text-muted);
background-color: var(--color-surface-subtle);
border: 1px solid var(--color-border);
border-radius: var(--radius-full);
padding: 0.25rem 0.625rem;
line-height: 1;
}
/* ---------------------------------------------------------------------
Media frame
--------------------------------------------------------------------- */
.media-frame {
position: relative;
overflow: hidden;
border-radius: var(--radius-lg);
background-color: var(--color-surface-subtle);
border: var(--border-hairline);
}
.media-frame > img,
.media-frame > video {
width: 100%;
height: 100%;
object-fit: cover;
}
/* ---------------------------------------------------------------------
Utilities
--------------------------------------------------------------------- */
.muted { color: var(--color-text-muted); }
.center { text-align: center; }
.align-start { align-items: flex-start; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-1 { flex: 1; }
.hairline-top { border-top: var(--border-hairline); }
.hairline-bottom { border-bottom: var(--border-hairline); }
.gap-2xs { gap: var(--space-2xs); }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.sr-only {
position: absolute;
width: 1px;
height: 1px;
margin: -1px;
padding: 0;
overflow: hidden;
clip: rect(0, 0, 0, 0);
border: 0;
}
@media (prefers-reduced-motion: reduce) {
*,
*::before,
*::after {
transition-duration: 0.01ms !important;
animation-duration: 0.01ms !important;
}
}