/**
 * Identity: Bobby Terminal public landing (marketing) surface.
 * Dependencies: Google Fonts (Marcellus, Inter, JetBrains Mono) loaded by landing.html.
 * Contract: Self-contained, light-only editorial landing. Ported aesthetic from
 *   gent-terminal marketing page. Does NOT depend on auth.css or theme.generated.css.
 */

:root {
    --navy-950: #06142f;
    --navy-900: #071d46;
    --navy-800: #08295f;
    --navy-700: #083078;
    --blue-500: #2f6fed;
    --surface-quiet: #f9fbfd;
    --surface-bluegrey: #eceff2;
    --surface-card: #ffffff;
    --border-subtle: #d8dee8;
    --hero-bg: color-mix(in srgb, var(--blue-500) 10%, var(--surface-quiet));

    --font-display: "Marcellus", Georgia, "Times New Roman", serif;
    --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

    --maxw: 80rem;
    --nav-h: 6rem;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.landing {
    margin: 0;
    min-height: 100vh;
    background: var(--surface-quiet);
    color: var(--navy-950);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ---------- Nav ---------- */

.lp-nav {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 40;
    background: var(--hero-bg);
    transition: transform 480ms ease, background-color 480ms ease;
    will-change: transform, background-color;
}

.lp-nav[data-hidden="true"] {
    transform: translateY(-100%);
}

.lp-nav__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1.25rem;
}

.lp-wordmark {
    flex-shrink: 0;
    font-family: var(--font-display);
    font-size: 1.375rem;
    letter-spacing: 0.01em;
    color: var(--navy-950);
    white-space: nowrap;
}

.lp-nav__links {
    display: none;
    flex: 1;
    align-items: center;
    justify-content: center;
    gap: 2.75rem;
}

.lp-nav__link {
    position: relative;
    padding: 0.75rem 0;
    font-size: 0.875rem;
    color: color-mix(in srgb, var(--navy-900) 82%, transparent);
    background: none;
    border: 0;
    cursor: pointer;
    font-family: inherit;
    transition: color 200ms ease;
}

.lp-nav__link:hover {
    color: var(--blue-500);
}

.lp-nav__link[data-active="true"] {
    color: var(--navy-950);
}

.lp-nav__link::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 100%;
    height: 0.375rem;
    width: 0.375rem;
    transform: translateX(-50%);
    border-radius: 999px;
    background: var(--navy-700);
    opacity: 0;
    transition: opacity 200ms ease;
}

.lp-nav__link[data-active="true"]::after {
    opacity: 1;
}

.lp-nav__actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.lp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.15rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: inherit;
    line-height: 1;
    cursor: pointer;
    transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
    white-space: nowrap;
}

.lp-btn--ghost {
    color: var(--navy-950);
    border: 1px solid color-mix(in srgb, var(--navy-950) 22%, transparent);
    background: transparent;
}

.lp-btn--ghost:hover {
    border-color: var(--navy-950);
    background: color-mix(in srgb, var(--navy-950) 5%, transparent);
}

.lp-btn--solid {
    color: #fff;
    background: var(--navy-950);
    border: 1px solid var(--navy-950);
}

.lp-btn--solid:hover {
    background: var(--navy-800);
    border-color: var(--navy-800);
}

.lp-btn--lg {
    padding: 0.85rem 1.6rem;
    font-size: 0.95rem;
}

/* ---------- Layout primitives ---------- */

.lp-section {
    scroll-margin-top: 6rem;
    padding: 7rem 1.25rem;
}

.lp-container {
    max-width: var(--maxw);
    margin: 0 auto;
}

.lp-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.24em;
    color: color-mix(in srgb, var(--navy-900) 80%, transparent);
}

.lp-h2 {
    margin: 2.25rem 0 0;
    max-width: 24ch;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.75rem, 5.6vw, 5.25rem);
    line-height: 0.96;
    letter-spacing: -0.03em;
    color: var(--navy-950);
}

.lp-body {
    margin: 1.75rem 0 0;
    max-width: 34rem;
    font-size: clamp(1.05rem, 1.4vw, 1.25rem);
    line-height: 1.6;
    color: color-mix(in srgb, var(--navy-900) 74%, transparent);
}

/* ---------- Hero ---------- */

.lp-hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding: 9rem 1.25rem 5rem;
    background: var(--hero-bg);
}

.lp-hero__title {
    margin: 0;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(3.25rem, 9vw, 8rem);
    line-height: 0.9;
    letter-spacing: -0.05em;
    color: var(--navy-950);
}

.lp-hero__sub {
    margin: 2rem 0 0;
    max-width: 40rem;
    font-size: clamp(1.1rem, 1.7vw, 1.4rem);
    line-height: 1.5;
    color: color-mix(in srgb, var(--navy-900) 78%, transparent);
}

.lp-hero__cta {
    margin-top: 2.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
}

/* ---------- Section grid ---------- */

.lp-grid {
    display: grid;
    gap: 3.5rem;
    align-items: center;
}

.lp-surface-white {
    background: var(--surface-card);
}

.lp-surface-bluegrey {
    background: var(--surface-bluegrey);
}

.lp-surface-quiet {
    background: var(--surface-quiet);
}

.lp-surface-tint {
    background: var(--hero-bg);
}

/* numbered meta list */
.lp-meta {
    margin: 0;
    display: grid;
    gap: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: color-mix(in srgb, var(--navy-900) 70%, transparent);
}

.lp-meta__row {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.lp-meta__num {
    width: 2rem;
    color: color-mix(in srgb, var(--navy-900) 40%, transparent);
}

/* ---------- Visual: data sources (honest, no fabricated quotes) ---------- */

.lp-sources {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: 30rem;
    display: grid;
    gap: 0.35rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    color: var(--navy-950);
}

.lp-sources li {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding: 0.85rem 0;
    border-bottom: 1px solid color-mix(in srgb, var(--navy-950) 12%, transparent);
}

.lp-sources__num {
    font-size: 0.7rem;
    color: color-mix(in srgb, var(--navy-900) 40%, transparent);
}

.lp-sources__tag {
    border-bottom: 0;
    padding-top: 1.1rem;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: color-mix(in srgb, var(--navy-900) 55%, transparent);
}

/* ---------- Visual: interactive seasonality chart ---------- */

.lp-chartx {
    position: relative;
    margin: 0;
    width: 100%;
    max-width: 42rem;
}

.lp-chartx__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.lp-chartx__tabs {
    display: inline-flex;
    gap: 0.35rem;
    padding: 0.25rem;
    border: 1px solid color-mix(in srgb, var(--navy-950) 14%, transparent);
    border-radius: 999px;
}

.lp-chartx__tab {
    border: 0;
    background: transparent;
    border-radius: 999px;
    padding: 0.4rem 0.85rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: color-mix(in srgb, var(--navy-900) 60%, transparent);
    cursor: pointer;
    transition: background-color 160ms ease, color 160ms ease;
}

.lp-chartx__tab.is-active {
    background: var(--navy-950);
    color: #fff;
}

.lp-chartx__unit {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: color-mix(in srgb, var(--navy-900) 52%, transparent);
}

.lp-chartx__plot {
    position: relative;
}

.lp-chartx__svg {
    width: 100%;
    height: auto;
    display: block;
    overflow: visible;
}

.lp-chartx__grid {
    stroke: #06142f;
    stroke-opacity: 0.1;
}

.lp-chartx__ylabel,
.lp-chartx__xlabel {
    fill: #06142f;
    fill-opacity: 0.46;
    font-family: "JetBrains Mono", monospace;
    font-size: 10px;
}

.lp-chartx__ylabel {
    text-anchor: end;
}

.lp-chartx__xlabel {
    text-anchor: middle;
    letter-spacing: 0.1em;
}

.lp-chartx__band {
    fill: #06142f;
    fill-opacity: 0.08;
}

.lp-chartx__avg {
    fill: none;
    stroke: var(--blue-500);
    stroke-opacity: 0.75;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.lp-chartx__cur {
    fill: none;
    stroke: #06142f;
    stroke-width: 2.4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.lp-chartx__dot {
    fill: #06142f;
}

.lp-chartx__cross {
    stroke: #06142f;
    stroke-opacity: 0.35;
    stroke-dasharray: 3 3;
}

.lp-chartx__hover {
    fill: #fff;
    stroke: #06142f;
    stroke-width: 2;
}

.lp-chartx__empty {
    padding: 3rem 0;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: color-mix(in srgb, var(--navy-900) 45%, transparent);
}

.lp-chartx__tip {
    position: absolute;
    z-index: 2;
    pointer-events: none;
    min-width: 8.5rem;
    padding: 0.6rem 0.7rem;
    border-radius: 10px;
    background: var(--navy-950);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.02em;
    box-shadow: 0 8px 24px color-mix(in srgb, var(--navy-950) 28%, transparent);
}

.lp-chartx__tip-h {
    margin-bottom: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: color-mix(in srgb, #fff 65%, transparent);
}

.lp-chartx__tip div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    line-height: 1.7;
}

.lp-chartx__tip span {
    color: color-mix(in srgb, #fff 60%, transparent);
}

.lp-chartx__meta {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: color-mix(in srgb, var(--navy-900) 52%, transparent);
}

.lp-chartx__meta strong {
    font-weight: 400;
    color: var(--navy-950);
}

/* ---------- Visual: attribution bars ---------- */

.lp-attr {
    display: grid;
    gap: 1.1rem;
    width: 100%;
    max-width: 34rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.lp-attr__row {
    display: grid;
    grid-template-columns: 8rem 1fr auto;
    align-items: center;
    gap: 1rem;
}

.lp-attr__label {
    color: var(--navy-950);
    text-transform: none;
    letter-spacing: normal;
}

.lp-attr__track {
    height: 0.5rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--navy-950) 8%, transparent);
    overflow: hidden;
}

.lp-attr__fill {
    height: 100%;
    border-radius: 999px;
    background: var(--navy-700);
}

.lp-attr__fill--pos {
    background: #138a43;
}

.lp-attr__fill--neg {
    background: #c73535;
}

.lp-attr__val {
    color: color-mix(in srgb, var(--navy-900) 66%, transparent);
    letter-spacing: 0.02em;
}

/* ---------- Visual: product tree ---------- */

.lp-tree {
    width: 100%;
    max-width: 32rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: color-mix(in srgb, var(--navy-900) 68%, transparent);
}

.lp-tree__group + .lp-tree__group {
    margin-top: 1.5rem;
}

.lp-tree__folder {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--navy-950);
}

.lp-tree__children {
    margin: 0.75rem 0 0 1rem;
    border-left: 1px solid color-mix(in srgb, var(--navy-950) 18%, transparent);
}

.lp-tree__leaf {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 0.9rem 0;
    border-bottom: 1px solid color-mix(in srgb, var(--navy-950) 10%, transparent);
}

.lp-tree__leaf::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    height: 1px;
    width: 1.75rem;
    transform: translateY(-50%);
    background: color-mix(in srgb, var(--navy-950) 18%, transparent);
}

.lp-tree__name {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding-left: 2.5rem;
    color: var(--navy-950);
}

.lp-tree__avatars {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    letter-spacing: normal;
}

.lp-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 1.75rem;
    width: 1.75rem;
    border-radius: 999px;
    border: 1px solid color-mix(in srgb, var(--navy-950) 28%, transparent);
    background: color-mix(in srgb, #fff 48%, transparent);
    font-size: 0.62rem;
    color: var(--navy-950);
}

.lp-tree svg {
    flex-shrink: 0;
}

/* ---------- Closing ---------- */

.lp-closing {
    background: var(--surface-card);
    padding: 6rem 1.25rem;
}

.lp-closing__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.lp-closing__title {
    margin: 1rem 0 0;
    max-width: 20ch;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(2.25rem, 5vw, 4rem);
    line-height: 1.02;
    letter-spacing: -0.035em;
    color: var(--navy-950);
}

/* ---------- Footer ---------- */

.lp-footer {
    background: var(--navy-700);
    color: #fff;
    padding: 4rem 1.25rem;
}

.lp-footer__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    display: grid;
    gap: 2rem;
}

.lp-footer__wordmark {
    font-family: var(--font-display);
    font-size: 1.75rem;
    letter-spacing: 0.01em;
}

.lp-footer__copy {
    max-width: 40rem;
    font-size: 0.9rem;
    line-height: 1.6;
    color: color-mix(in srgb, #fff 72%, transparent);
}

.lp-footer__legal {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.08em;
    color: color-mix(in srgb, #fff 56%, transparent);
}

/* ---------- Responsive ---------- */

/* Mobile nav: section links hide; keep the wordmark + auth actions on one row. */
@media (max-width: 767px) {
    .lp-nav__inner {
        gap: 0.5rem;
        padding: 0 0.85rem;
    }

    .lp-wordmark {
        font-size: 1rem;
    }

    .lp-nav__actions {
        gap: 0.5rem;
    }

    .lp-nav__actions .lp-btn {
        padding: 0.45rem 0.7rem;
        font-size: 0.72rem;
    }

    .lp-chartx {
        max-width: 100%;
    }

    .lp-chartx__tip {
        max-width: 11rem;
    }
}

/* Very narrow: drop the ghost "Sign in" from the bar (still in the hero CTA). */
@media (max-width: 430px) {
    .lp-nav__actions .lp-btn--ghost {
        display: none;
    }
}

@media (min-width: 768px) {
    .lp-nav__links {
        display: flex;
    }

    .lp-section {
        padding: 9rem 2rem;
    }

    .lp-hero,
    .lp-closing,
    .lp-footer {
        padding-left: 2rem;
        padding-right: 2rem;
    }

    .lp-nav__inner {
        padding: 0 2rem;
    }

    .lp-grid {
        grid-template-columns: minmax(0, 0.92fr) minmax(20rem, 0.58fr);
    }

    .lp-visual,
    .lp-attr,
    .lp-tree {
        justify-self: end;
    }

    .lp-closing__inner {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    .lp-section,
    .lp-hero,
    .lp-closing,
    .lp-footer,
    .lp-nav__inner {
        padding-left: 3rem;
        padding-right: 3rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .lp-nav {
        transition: none;
    }
}