/* ------------------------------------------------------------------ *
   HabitFlame site styles
   Display: Bricolage Grotesque (self-hosted). Body: Inter (self-hosted).
 * ------------------------------------------------------------------ */

@font-face {
    font-family: "Bricolage Grotesque";
    font-style: normal;
    font-weight: 700 800;
    font-display: swap;
    src: url("/assets/fonts/bricolage-latin.woff2") format("woff2");
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
        U+02DA, U+02DC, U+2013-2014, U+2018-2019, U+201C-201D, U+2020-2022,
        U+2026, U+2030, U+2039-203A, U+2044, U+2074, U+20AC, U+2122, U+2191,
        U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: "Inter";
    font-style: normal;
    font-weight: 400 600;
    font-display: swap;
    src: url("/assets/fonts/inter-latin.woff2") format("woff2");
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
        U+02DA, U+02DC, U+2013-2014, U+2018-2019, U+201C-201D, U+2020-2022,
        U+2026, U+2030, U+2039-203A, U+2044, U+2074, U+20AC, U+2122, U+2191,
        U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --bg: #0A0908;
    --surface: #151210;
    --surface-2: #1E1915;
    --ink: #F7F1E8;
    --muted: #A99E8E;
    --ember: #FF8A1E;
    --ember-hot: #FFB340;
    --ember-deep: #E8471C;
    --line: rgba(247, 241, 232, 0.09);
    --line-strong: rgba(247, 241, 232, 0.16);

    --grad-ember: linear-gradient(120deg, #FFB340, #FF8A1E 45%, #E8471C);

    --display: "Bricolage Grotesque", "Trebuchet MS", -apple-system,
        BlinkMacSystemFont, sans-serif;
    --text: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        Helvetica, Arial, sans-serif;
    --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;

    --maxw: 1120px;
    --pad: 24px;
    --rhythm: 96px;
}

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

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

body {
    font-family: var(--text);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

a {
    color: inherit;
}

:focus-visible {
    outline: 2px solid var(--ember-hot);
    outline-offset: 3px;
    border-radius: 4px;
}

.wrap {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 var(--pad);
}

.eyebrow {
    font-family: var(--text);
    font-weight: 600;
    font-size: 12px;
    line-height: 1;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

.gradient-text {
    background: var(--grad-ember);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ---- Buttons ---------------------------------------------------- */
.btn-app {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.95rem 1.5rem;
    background: var(--grad-ember);
    color: #1B0D02;
    text-decoration: none;
    font-family: var(--text);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 14px;
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 34px -12px rgba(232, 71, 28, 0.7);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-app:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 44px -12px rgba(232, 71, 28, 0.75);
}

.btn-app svg {
    width: 21px;
    height: 21px;
    flex-shrink: 0;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.95rem 1.5rem;
    background: var(--surface-2);
    color: var(--ink);
    text-decoration: none;
    font-family: var(--text);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 14px;
    border: 1px solid var(--line-strong);
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.btn-ghost:hover {
    background: #262019;
    border-color: rgba(247, 241, 232, 0.28);
}

.microcopy {
    color: var(--muted);
    font-size: 0.9rem;
    margin-top: 0.9rem;
}

/* ---- Ember divider (7 dots: 4 lit, 3 cold) ---------------------- */
.ember-divider {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    padding: var(--rhythm) 0;
}

.ember-divider span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: rgba(169, 158, 142, 0.25);
}

.ember-divider span.lit {
    background: var(--grad-ember);
    box-shadow: 0 0 10px -1px rgba(255, 138, 30, 0.65);
}

/* ---- Header ----------------------------------------------------- */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 9, 8, 0.72);
    backdrop-filter: saturate(150%) blur(16px);
    -webkit-backdrop-filter: saturate(150%) blur(16px);
    border-bottom: 1px solid var(--line);
}

.site-nav .wrap {
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--display);
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    text-decoration: none;
    color: var(--ink);
}

.brand img {
    width: 30px;
    height: 30px;
    border-radius: 8px;
}

.site-nav nav {
    display: flex;
    gap: 1.6rem;
}

.site-nav nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.site-nav nav a:hover {
    color: var(--ink);
}

/* ---- Device frame + signature glow ------------------------------ */
.device {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    border-radius: 44px;
    padding: 7px;
    background: linear-gradient(155deg, #2A2420 0%, #100D0B 60%, #1C1815 100%);
    box-shadow:
        0 40px 90px -30px rgba(0, 0, 0, 0.85),
        0 0 0 1px rgba(247, 241, 232, 0.06),
        inset 0 1px 0 rgba(247, 241, 232, 0.08);
}

.device img {
    width: 100%;
    border-radius: 37px;
    display: block;
}

.hero-stage {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    isolation: isolate;
}

/* radial heat-glow behind the device */
.hero-stage .heat {
    position: absolute;
    z-index: 0;
    width: 118%;
    aspect-ratio: 1;
    left: 50%;
    top: 48%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle at 50% 50%,
        rgba(255, 138, 30, 0.42) 0%,
        rgba(232, 71, 28, 0.22) 34%,
        transparent 66%);
    filter: blur(8px);
    pointer-events: none;
}

/* thin ember arc sweeping behind the device */
.hero-stage .arc {
    position: absolute;
    z-index: 1;
    width: 128%;
    height: 128%;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    overflow: visible;
}

.hero-stage .arc path {
    fill: none;
    stroke: url(#emberArc);
    stroke-width: 2.5;
    stroke-linecap: round;
    filter: drop-shadow(0 0 8px rgba(255, 138, 30, 0.55));
}

@media (prefers-reduced-motion: no-preference) {
    .hero-stage .heat {
        animation: heatPulse 6s ease-in-out infinite alternate;
    }
}

@keyframes heatPulse {
    from { opacity: 0.8; transform: translate(-50%, -50%) scale(0.98); }
    to { opacity: 1; transform: translate(-50%, -50%) scale(1.04); }
}

/* ---- Hero ------------------------------------------------------- */
.hero {
    padding: 72px 0 24px;
}

.hero .wrap {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
}

.hero-copy .eyebrow {
    margin-bottom: 1.1rem;
}

.hero-copy h1 {
    font-family: var(--display);
    font-weight: 800;
    font-size: clamp(2.5rem, 5.6vw, 4.1rem);
    line-height: 1.02;
    letter-spacing: -0.03em;
    margin-bottom: 1.2rem;
}

.hero-copy p.lede {
    color: var(--muted);
    font-size: clamp(1.05rem, 1.6vw, 1.2rem);
    max-width: 40ch;
    margin-bottom: 1.9rem;
}

/* ---- Feature sections ------------------------------------------- */
.feature .wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.feature.reverse .feature-media {
    order: -1;
}

.feature-copy h2 {
    font-family: var(--display);
    font-weight: 800;
    font-size: clamp(1.9rem, 3.6vw, 2.8rem);
    line-height: 1.06;
    letter-spacing: -0.02em;
    margin: 0.8rem 0 1rem;
}

.feature-copy p {
    color: var(--muted);
    font-size: 1.08rem;
    max-width: 46ch;
}

.feature-copy p + p {
    margin-top: 0.9rem;
}

.feature-copy .accent {
    color: var(--ink);
    font-weight: 500;
}

.feature-media {
    display: flex;
    justify-content: center;
}

.feature-media .device {
    max-width: 270px;
}

/* two-up gallery (streaks section) */
.stakes .wrap {
    display: block;
}

.stakes .stakes-head {
    max-width: 44ch;
    margin-bottom: 40px;
}

.stakes .stakes-head h2 {
    font-family: var(--display);
    font-weight: 800;
    font-size: clamp(1.9rem, 3.6vw, 2.8rem);
    line-height: 1.06;
    letter-spacing: -0.02em;
    margin: 0.8rem 0 0;
}

.two-up {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.shot-card {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.shot-card .device {
    max-width: 250px;
}

.shot-card .caption {
    text-align: center;
}

.shot-card .caption .t {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--ink);
}

.shot-card .caption .d {
    color: var(--muted);
    font-size: 0.95rem;
    margin-top: 0.15rem;
}

/* ---- Closer ----------------------------------------------------- */
.closer {
    padding-bottom: var(--rhythm);
}

.closer .box {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 56px 32px;
}

.closer .box h2 {
    font-family: var(--display);
    font-weight: 800;
    font-size: clamp(1.8rem, 3.4vw, 2.5rem);
    letter-spacing: -0.02em;
    margin-bottom: 0.7rem;
}

.closer .box p {
    color: var(--muted);
    font-size: 1.08rem;
    margin-bottom: 1.9rem;
}

/* ---- Footer ----------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--line);
    padding: 44px 0 52px;
    margin-top: var(--rhythm);
}

.site-footer .foot-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.6rem;
    margin-bottom: 1.1rem;
}

.site-footer .foot-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.2s ease;
}

.site-footer .foot-links a:hover {
    color: var(--ember);
}

.site-footer .copy {
    text-align: center;
    color: rgba(169, 158, 142, 0.7);
    font-size: 0.85rem;
}

.site-footer .brand-line {
    margin-top: 0.4rem;
}

.site-footer .brand-line a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

.site-footer .brand-line a:hover {
    color: var(--ember);
}

/* ---- Long-form document pages ----------------------------------- */
.doc {
    max-width: 760px;
    margin: 0 auto;
    padding: 64px var(--pad) 8px;
}

.doc h1 {
    font-family: var(--display);
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 2.7rem);
    letter-spacing: -0.02em;
    margin-bottom: 0.4rem;
}

.doc .updated {
    color: rgba(169, 158, 142, 0.75);
    font-size: 0.9rem;
    margin-bottom: 2.4rem;
}

.doc h2 {
    font-family: var(--display);
    font-weight: 700;
    font-size: 1.3rem;
    margin: 2.4rem 0 0.7rem;
    color: var(--ink);
}

.doc p {
    color: var(--muted);
    margin-bottom: 1rem;
}

.doc ul {
    color: var(--muted);
    margin: 0 0 1rem 1.25rem;
}

.doc li {
    margin-bottom: 0.4rem;
}

.doc a {
    color: var(--ember);
    text-decoration: none;
}

.doc a:hover {
    text-decoration: underline;
}

.doc strong {
    color: var(--ink);
}

.doc .card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 1.5rem 1.75rem;
    margin: 1.5rem 0 2rem;
}

.doc .card p:last-child {
    margin-bottom: 0;
}

.doc .faq {
    margin-bottom: 1.5rem;
}

.doc .faq .q {
    color: var(--ink);
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.doc hr {
    border: none;
    border-top: 1px solid var(--line);
    margin: 3rem 0 1.5rem;
}

.doc .tagline {
    color: rgba(169, 158, 142, 0.7);
    font-size: 0.85rem;
}

/* ---- Responsive ------------------------------------------------- */
@media (max-width: 860px) {
    :root {
        --rhythm: 64px;
    }

    .hero {
        padding: 44px 0 8px;
    }

    .hero .wrap,
    .feature .wrap {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-copy {
        text-align: center;
    }

    .hero-copy p.lede {
        margin-left: auto;
        margin-right: auto;
    }

    .feature-copy {
        text-align: center;
    }

    .feature-copy p {
        margin-left: auto;
        margin-right: auto;
    }

    /* image always leads on mobile for a consistent rhythm */
    .feature .feature-media,
    .feature.reverse .feature-media {
        order: -1;
    }

    .stakes .stakes-head {
        text-align: center;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 560px) {
    .site-nav nav {
        gap: 1.1rem;
    }

    .site-nav nav a {
        font-size: 0.85rem;
    }

    .two-up {
        grid-template-columns: 1fr;
        gap: 44px;
        max-width: 320px;
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    /* Keep the header on one row without overlap on narrow phones. */
    .nav-collapsible {
        display: none;
    }

    .site-nav nav {
        gap: 1rem;
    }
}