/* ==========================================================================
   Surfshack Design Library — marketing site styles
   Editorial / specimen-book aesthetic. Cream paper, ink black, vermilion.
   ========================================================================== */

:root {
    --paper: #f4efe4;
    --paper-deep: #ece5d3;
    --ink: #15110d;
    --ink-soft: #3a3129;
    --ink-mute: #6b5f51;
    --rule: #1a160f;
    --hair: rgba(21, 17, 13, 0.18);
    --hair-soft: rgba(21, 17, 13, 0.08);
    --vermilion: #c1361a;
    --vermilion-deep: #8f2610;
    --serif: 'Fraunces', 'Times New Roman', Georgia, serif;
    --sans: 'Inter Tight', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    --mono: 'JetBrains Mono', 'IBM Plex Mono', Menlo, Consolas, monospace;
    --measure: 68ch;
    --gutter: clamp(1.25rem, 3vw, 2.5rem);
    --shadow-low: 0 1px 0 rgba(21, 17, 13, 0.06), 0 10px 30px -18px rgba(21, 17, 13, 0.35);
    --shadow-lift: 0 2px 0 rgba(21, 17, 13, 0.08), 0 30px 60px -30px rgba(21, 17, 13, 0.5);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.55;
    font-feature-settings: 'ss01', 'ss02', 'cv11';
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--ink); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--vermilion); }

button { font: inherit; color: inherit; cursor: pointer; }

/* Paper grain overlay ----------------------------------------------------- */
.paper-grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    mix-blend-mode: multiply;
    opacity: 0.35;
    background-image:
        radial-gradient(1200px 600px at 10% -10%, rgba(193, 54, 26, 0.08), transparent 60%),
        radial-gradient(800px 500px at 120% 20%, rgba(21, 17, 13, 0.06), transparent 60%),
        repeating-radial-gradient(circle at 30% 40%, rgba(21, 17, 13, 0.035) 0 1px, transparent 1px 3px);
}

/* Masthead ---------------------------------------------------------------- */
.masthead {
    position: relative;
    z-index: 2;
    border-bottom: 1px solid var(--rule);
    background: var(--paper);
}

.masthead__inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 1.1rem var(--gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.masthead__mark {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    font-family: var(--serif);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.01em;
}

.masthead__glyph {
    display: inline-block;
    width: 1.1rem;
    height: 1.1rem;
    line-height: 1;
    color: var(--vermilion);
    font-size: 1.05rem;
    transform: translateY(-1px);
}

.masthead__meta {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-soft);
}

.masthead__divider {
    width: 1px;
    height: 0.8rem;
    background: var(--hair);
}

@media (max-width: 640px) {
    .masthead__meta { display: none; }
}

/* Hero -------------------------------------------------------------------- */
main {
    position: relative;
    z-index: 2;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.hero {
    padding: clamp(3.5rem, 9vw, 7.5rem) 0 clamp(3rem, 6vw, 5rem);
    border-bottom: 1px solid var(--hair);
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(2rem, 5vw, 3.5rem);
    position: relative;
}

.hero__rule {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--ink-mute);
}

.hero__rule-line {
    flex: 0 0 10rem;
    height: 1px;
    background: var(--rule);
}

.hero__title {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(3rem, 10vw, 9rem);
    line-height: 0.92;
    letter-spacing: -0.035em;
    margin: 0;
    font-variation-settings: 'opsz' 144;
}

.hero__title-line {
    display: block;
}

.hero__title-line--accent em {
    font-style: italic;
    font-weight: 400;
    color: var(--vermilion);
    font-variation-settings: 'opsz' 144;
}

.hero__lede {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: start;
    padding-top: 1.5rem;
    border-top: 1px solid var(--hair);
}

.hero__lede p {
    max-width: 38ch;
    font-size: clamp(1.05rem, 1.4vw, 1.2rem);
    line-height: 1.55;
    color: var(--ink-soft);
    margin: 0;
}

.hero__kbd {
    font-family: var(--mono);
    font-size: 0.82em;
    background: var(--ink);
    color: var(--paper);
    padding: 0.08em 0.5em;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    align-self: start;
}

.hero__stat {
    border-top: 1px solid var(--rule);
    padding-top: 0.8rem;
}

.hero__stat-num {
    font-family: var(--serif);
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 400;
    line-height: 1;
    letter-spacing: -0.02em;
}

.hero__stat-label {
    margin-top: 0.35rem;
    font-family: var(--mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-mute);
}

.hero__cue {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--ink-mute);
}

.hero__cue-arrow { color: var(--vermilion); font-size: 1rem; animation: bob 2.6s ease-in-out infinite; }

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(4px); }
}

@media (max-width: 820px) {
    .hero__lede { grid-template-columns: 1fr; }
    .hero__stats { grid-template-columns: repeat(3, 1fr); }
}

/* Catalog head ------------------------------------------------------------ */
.catalog {
    padding: clamp(3rem, 6vw, 5rem) 0 clamp(5rem, 10vw, 8rem);
}

.catalog__head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--rule);
    margin-bottom: 2.5rem;
}

.catalog__title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    letter-spacing: -0.02em;
    margin: 0;
    font-style: italic;
}

.catalog__controls {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.search {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    border-bottom: 1px solid var(--rule);
    padding: 0.35rem 0;
    min-width: 18rem;
}

.search__label {
    font-family: var(--mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-mute);
}

.search input {
    flex: 1;
    background: transparent;
    border: 0;
    outline: none;
    font: inherit;
    color: var(--ink);
    font-size: 0.95rem;
    padding: 0.1rem 0;
}

.search input::placeholder { color: var(--ink-mute); font-style: italic; }

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.chip {
    border: 1px solid var(--rule);
    background: transparent;
    padding: 0.35rem 0.8rem;
    font-family: var(--mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink);
    transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.chip:hover { background: var(--ink); color: var(--paper); }
.chip.is-active { background: var(--vermilion); border-color: var(--vermilion); color: var(--paper); }

/* Card grid --------------------------------------------------------------- */
.grid {
    min-height: 30vh;
}

.cards {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: clamp(1.5rem, 3vw, 2.5rem);
}

.card-wrap { display: block; }

.card {
    display: flex;
    flex-direction: column;
    background: var(--paper);
    border: 1px solid var(--hair);
    padding: 1.4rem 1.4rem 1.5rem;
    position: relative;
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
    animation: card-in 520ms cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes card-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--rule);
    box-shadow: var(--shadow-lift);
}

.card__index {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-family: var(--mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-mute);
    margin-bottom: 0.9rem;
}

.card__num { color: var(--vermilion); }

.card__cat::before { content: "/ "; color: var(--ink-mute); }

.card__stage {
    appearance: none;
    border: 1px solid var(--hair);
    width: 100%;
    padding: 1.6rem 1.4rem 1.8rem;
    text-align: left;
    cursor: pointer;
    transition: filter 180ms ease;
    min-height: 220px;
    overflow: hidden;
}

.card__stage:hover { filter: brightness(1.02) saturate(1.05); }

.stage-inner { display: flex; flex-direction: column; gap: 0.8rem; }

.stage-eyebrow {
    font-family: var(--mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.stage-heading {
    font-size: 1.55rem;
    line-height: 1.1;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.stage-body {
    font-size: 0.95rem;
    line-height: 1.45;
    margin: 0;
}

.stage-controls {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-top: 0.4rem;
}

.stage-btn {
    display: inline-block;
    padding: 0.55rem 1.1rem;
    font-size: 0.82rem;
    font-family: var(--sans);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.stage-dot {
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 999px;
    display: inline-block;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
}

/* Card meta (neutral chrome) */
.card__meta {
    padding-top: 1.2rem;
    margin-top: 1.2rem;
    border-top: 1px solid var(--hair);
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    font-family: var(--sans);
    color: var(--ink);
}

.card__name {
    font-family: var(--serif);
    font-size: 1.35rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin: 0;
    line-height: 1.15;
}

.card__desc {
    font-size: 0.92rem;
    color: var(--ink-soft);
    line-height: 1.5;
    margin: 0;
}

.card__tags {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.card__tags li {
    font-family: var(--mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--hair);
    color: var(--ink-mute);
}

.card__actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 0.6rem;
    padding-top: 0.9rem;
    border-top: 1px dashed var(--hair);
}

.link-btn {
    background: transparent;
    border: 0;
    padding: 0;
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink);
    border-bottom: 1px solid var(--ink);
}
.link-btn:hover { color: var(--vermilion); border-color: var(--vermilion); }

.mailto-btn {
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--paper);
    background: var(--ink);
    padding: 0.55rem 0.9rem;
    text-decoration: none;
    transition: background 180ms ease, transform 180ms ease;
}

.mailto-btn:hover { background: var(--vermilion); color: var(--paper); transform: translateX(2px); }

.mailto-btn--large {
    font-size: 0.85rem;
    padding: 0.95rem 1.5rem;
    letter-spacing: 0.16em;
}

/* Empty state ------------------------------------------------------------- */
.empty {
    padding: 4rem 0;
    text-align: center;
    max-width: 40ch;
    margin: 0 auto;
}
.empty__rule { width: 3rem; height: 2px; background: var(--vermilion); margin: 0 auto 1.5rem; }
.empty__line { font-family: var(--serif); font-size: 1.6rem; font-style: italic; margin: 0 0 0.5rem; }
.empty__sub { color: var(--ink-mute); margin: 0; }

/* Colophon ---------------------------------------------------------------- */
.colophon {
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--rule);
    background: var(--paper-deep);
}
.colophon__inner {
    max-width: 1440px;
    margin: 0 auto;
    padding: 1.6rem var(--gutter);
}
.colophon__line {
    margin: 0;
    font-family: var(--mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-soft);
}
.colophon__line a { color: var(--vermilion); text-decoration: none; border-bottom: 1px solid var(--vermilion); }

/* Preview modal ----------------------------------------------------------- */
.preview-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}
.preview-modal[hidden] { display: none; }

.preview-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(21, 17, 13, 0.72);
    backdrop-filter: blur(4px);
    animation: fade 220ms ease both;
}

.preview-modal__shell {
    position: relative;
    background: var(--paper);
    max-width: 960px;
    width: 100%;
    max-height: 92vh;
    overflow-y: auto;
    border: 1px solid var(--rule);
    box-shadow: var(--shadow-lift);
    animation: lift 360ms cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes lift {
    from { opacity: 0; transform: translateY(20px) scale(.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.preview-modal__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: 1px solid var(--rule);
    width: 2.2rem;
    height: 2.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    line-height: 1;
    z-index: 2;
    transition: background 160ms ease, color 160ms ease;
}
.preview-modal__close:hover { background: var(--ink); color: var(--paper); }

.preview-modal__body { padding: 2.5rem clamp(1.25rem, 4vw, 3rem) 2.5rem; }

/* Preview content --------------------------------------------------------- */
.preview__head { margin-bottom: 2rem; border-bottom: 1px solid var(--hair); padding-bottom: 1.5rem; }

.preview__eyebrow {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-mute);
    margin-bottom: 0.8rem;
}
.preview__dot { width: 4px; height: 4px; border-radius: 999px; background: var(--vermilion); }

.preview__title {
    font-family: var(--serif);
    font-size: clamp(2rem, 5vw, 3.6rem);
    font-weight: 400;
    line-height: 1;
    letter-spacing: -0.025em;
    margin: 0 0 0.8rem;
}

.preview__desc { color: var(--ink-soft); max-width: 60ch; margin: 0; font-size: 1.05rem; }

.preview__section { padding: 2rem; margin-bottom: 1.5rem; }

.preview__section--component { border: 1px solid var(--hair); }
.preview__section--palette, .preview__section--iframe { padding: 0; margin-top: 2rem; }

.type-sample__eyebrow {
    font-family: var(--mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    margin-bottom: 1rem;
}
.type-sample__display {
    font-size: clamp(1.8rem, 4vw, 3rem);
    line-height: 1.05;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin: 0 0 1.2rem;
    max-width: 18ch;
}
.type-sample__body { font-size: 1.02rem; line-height: 1.55; max-width: 50ch; margin: 0; }

.component-card { padding: 1.6rem; }
.component-card__tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    margin-bottom: 0.6rem;
}
.component-card__title { font-size: 1.4rem; font-weight: 600; margin-bottom: 0.4rem; }
.component-card__body { margin: 0 0 1.2rem; font-size: 0.95rem; line-height: 1.5; }
.component-card__row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.component-btn { padding: 0.6rem 1.1rem; font-size: 0.85rem; font-weight: 600; display: inline-block; }
.component-btn--ghost { background: transparent; }

.palette-head {
    font-family: var(--mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--ink-mute);
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 1rem;
}

.palette {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}
.palette__item {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.8rem;
    border: 1px solid var(--hair);
}
.palette__chip {
    display: block;
    width: 100%;
    aspect-ratio: 3 / 2;
    border: 1px solid var(--hair);
}
.palette__label {
    font-family: var(--mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-mute);
}
.palette__value {
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--ink);
}

.preview__iframe {
    width: 100%;
    height: 420px;
    border: 1px solid var(--rule);
    background: #fff;
}

.preview__foot {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--rule);
    display: flex;
    justify-content: flex-end;
}

/* Reduced motion ---------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}

/* Small screens ----------------------------------------------------------- */
@media (max-width: 520px) {
    .catalog__head { flex-direction: column; align-items: stretch; }
    .search { min-width: 0; width: 100%; }
    .card { padding: 1.1rem; }
    .preview-modal { padding: 0.5rem; }
    .preview-modal__body { padding: 1.5rem 1rem; }
}