/* ─────────────────────────────────────────────────────────────
   Poof — Landing page
   Design tokens synced with PoofTheme.swift (source of truth).
   Palette : canvas #05050D · blue #0165FB→#0050D8 · cyan #00CCFF
   ───────────────────────────────────────────────────────────── */

:root {
    --canvas: #FFFFFF;
    --canvas-2: #FAFAFA;
    --canvas-3: #F4F4F5;

    --blue-start: #0165FB;
    --blue-end: #0050D8;
    --cyan: #00A8E8;
    --green: #34C759;

    --text-1: #09090B;
    --text-2: #52525B;
    --text-3: #71717A;
    --text-4: #A1A1AA;

    --hairline: rgba(9, 9, 11, 0.06);
    --hairline-strong: rgba(9, 9, 11, 0.12);
    --glass: rgba(9, 9, 11, 0.02);
    --glass-hi: rgba(9, 9, 11, 0.04);

    --radius-card: 32px;
    --radius-md: 20px;
    --radius-sm: 12px;
    --radius-pill: 999px;

    --shell: min(1200px, 100% - 48px);

    --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display",
                    "Inter", "Helvetica Neue", Arial, sans-serif;
    --font-text: -apple-system, BlinkMacSystemFont, "SF Pro Text",
                 "Inter", "Helvetica Neue", Arial, sans-serif;

    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    background: var(--canvas);
}

body {
    font-family: var(--font-text);
    color: var(--text-1);
    background: var(--canvas);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    letter-spacing: -0.005em;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img, svg { display: block; max-width: 100%; }

/* ─────────────────────────────────────────────────────────────
   Nav
   ───────────────────────────────────────────────────────────── */

.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px max(24px, calc((100% - 1200px) / 2));
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--hairline);
}

.nav__wordmark {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.02em;
    color: var(--text-1);
}

.nav__links {
    display: flex;
    gap: 32px;
    font-size: 14px;
    color: var(--text-2);
}

.nav__links a {
    transition: color 0.2s var(--ease);
}
.nav__links a:hover { color: var(--text-1); }

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

/* ─────────────────────────────────────────────────────────────
   Hero
   ───────────────────────────────────────────────────────────── */

.hero {
    position: relative;
    padding: 160px 0 120px;
    overflow: hidden;
}

.hero__orbs {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 18% 22%, rgba(1, 101, 251, 0.06), transparent 45%),
        radial-gradient(circle at 82% 32%, rgba(0, 168, 232, 0.04), transparent 40%);
    filter: blur(20px);
}

.hero__inner {
    position: relative;
    width: var(--shell);
    margin: 0 auto;
    text-align: center;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--glass);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-pill);
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-2);
    margin-bottom: 32px;
    letter-spacing: 0.01em;
}

.hero__badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
    animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero__title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(48px, 8vw, 96px);
    line-height: 0.98;
    letter-spacing: -0.045em;
    color: var(--text-1);
    margin-bottom: 24px;
}

.hero__title-accent {
    background: linear-gradient(180deg, var(--cyan) 0%, var(--blue-start) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__tagline {
    font-size: clamp(17px, 1.4vw, 20px);
    color: var(--text-2);
    max-width: 620px;
    margin: 0 auto 40px;
    line-height: 1.55;
    letter-spacing: -0.005em;
}

.hero__cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.hero__meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    font-size: 13px;
    color: var(--text-3);
    letter-spacing: 0.01em;
}

.hero__meta-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--text-4);
}

/* Product mockup slot — placeholder for real screenshot */
.hero__product {
    position: relative;
    width: var(--shell);
    margin: 96px auto 0;
}

.hero__product-glow {
    position: absolute;
    inset: -80px;
    background: radial-gradient(ellipse at 50% 30%, rgba(1, 101, 251, 0.45), transparent 60%);
    filter: blur(40px);
    pointer-events: none;
}

.hero__product-frame {
    position: relative;
    border-radius: var(--radius-card);
    border: 1px solid var(--hairline);
    background: linear-gradient(180deg, var(--canvas-2), var(--canvas-3));
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.8) inset,
        0 40px 80px -20px rgba(9, 9, 11, 0.10),
        0 0 0 1px rgba(9, 9, 11, 0.02);
}

.hero__product-placeholder {
    color: var(--text-4);
    font-size: 14px;
    text-align: center;
    letter-spacing: 0.01em;
}
.hero__product-placeholder small {
    color: var(--text-4);
    font-size: 11px;
    opacity: 0.6;
}

/* ─────────────────────────────────────────────────────────────
   Buttons
   ───────────────────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 22px;
    border-radius: var(--radius-pill);
    font-family: var(--font-text);
    font-size: 14.5px;
    font-weight: 500;
    letter-spacing: -0.005em;
    transition: all 0.2s var(--ease);
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn--primary {
    background: var(--text-1);
    color: #FFFFFF;
    border: 1px solid var(--text-1);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        0 1px 2px rgba(9, 9, 11, 0.10),
        0 4px 12px -2px rgba(9, 9, 11, 0.15);
}
.btn--primary:hover {
    transform: translateY(-1px);
    background: #18181B;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.14),
        0 4px 8px rgba(9, 9, 11, 0.12),
        0 8px 20px -4px rgba(9, 9, 11, 0.20);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
    background: #FFFFFF;
    color: var(--text-1);
    border: 1px solid var(--hairline-strong);
    box-shadow: 0 1px 2px rgba(9, 9, 11, 0.04);
}
.btn--ghost:hover {
    background: var(--canvas-2);
    border-color: rgba(9, 9, 11, 0.18);
}

/* ─────────────────────────────────────────────────────────────
   Section shell
   ───────────────────────────────────────────────────────────── */

section {
    padding: 120px 0;
}

.section__head {
    width: var(--shell);
    margin: 0 auto 64px;
    text-align: center;
}

.eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--blue-start);
    margin-bottom: 16px;
}

.eyebrow--light {
    color: var(--cyan);
}

.section__title {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.035em;
    color: var(--text-1);
    margin-bottom: 16px;
}

.section__lead {
    font-size: 17px;
    color: var(--text-2);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.55;
}

/* ─────────────────────────────────────────────────────────────
   Pillars — 3 columns
   ───────────────────────────────────────────────────────────── */

.pillars {
    padding: 80px 0 40px;
}

.pillars__grid {
    width: var(--shell);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 800px) {
    .pillars__grid { grid-template-columns: 1fr; }
}

.pillar {
    padding: 40px 32px;
    background: #FFFFFF;
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    transition: all 0.3s var(--ease);
}
.pillar:hover {
    border-color: var(--hairline-strong);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -12px rgba(9, 9, 11, 0.10);
}

.pillar__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--text-1);
    color: #FFFFFF;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px -8px rgba(9, 9, 11, 0.30);
}

.pillar__title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.pillar__body {
    font-size: 15px;
    color: var(--text-2);
    line-height: 1.55;
}

/* ─────────────────────────────────────────────────────────────
   Platforms — grid of download cards
   ───────────────────────────────────────────────────────────── */

.platforms__grid {
    width: var(--shell);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

@media (max-width: 900px) { .platforms__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .platforms__grid { grid-template-columns: 1fr; } }

.platform {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 22px;
    background: #FFFFFF;
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    transition: all 0.25s var(--ease);
    color: var(--text-1);
}

.platform--live:hover {
    border-color: var(--hairline-strong);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -12px rgba(9, 9, 11, 0.12);
}

.platform--soon {
    opacity: 0.55;
    cursor: default;
}

.platform__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--canvas-3);
    border: 1px solid var(--hairline);
    color: var(--text-1);
    flex-shrink: 0;
    overflow: hidden;
}

.platform__icon img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    mix-blend-mode: multiply;
}

.platform__body {
    flex: 1;
    min-width: 0;
}

.platform__name {
    font-family: var(--font-display);
    font-size: 15.5px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-1);
    margin-bottom: 2px;
}

.platform__meta {
    font-size: 12.5px;
    color: var(--text-3);
    letter-spacing: 0.005em;
}

.platform__cta {
    font-size: 13px;
    font-weight: 500;
    color: var(--blue-start);
    letter-spacing: -0.005em;
    flex-shrink: 0;
}
.platform__cta--soon {
    color: var(--text-3);
}

/* ─────────────────────────────────────────────────────────────
   How it works
   ───────────────────────────────────────────────────────────── */

.how__steps {
    width: var(--shell);
    margin: 0 auto;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 800px) { .how__steps { grid-template-columns: 1fr; } }

.how__step {
    padding: 40px 32px;
    background: #FFFFFF;
    border: 1px solid var(--hairline);
    border-radius: var(--radius-md);
    position: relative;
}

.how__num {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    color: var(--blue-start);
    letter-spacing: 0.02em;
    margin-bottom: 20px;
    display: block;
}

.how__title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.how__body {
    font-size: 15px;
    color: var(--text-2);
    line-height: 1.55;
}

/* ─────────────────────────────────────────────────────────────
   Premium
   ───────────────────────────────────────────────────────────── */

.premium {
    padding-bottom: 160px;
}

.premium__card {
    width: var(--shell);
    margin: 0 auto;
    background: var(--text-1);
    border-radius: var(--radius-card);
    position: relative;
    overflow: hidden;
}

.premium__card::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(1, 101, 251, 0.25), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(0, 168, 232, 0.15), transparent 45%);
    pointer-events: none;
}

.premium__inner {
    position: relative;
    padding: 72px 64px;
    text-align: center;
    border-radius: var(--radius-card);
}

.premium__inner .eyebrow--light {
    margin-bottom: 20px;
}

.premium__title {
    font-family: var(--font-display);
    font-size: clamp(30px, 4vw, 44px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: #FFFFFF;
    margin-bottom: 20px;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}

.premium__lead {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.6;
    max-width: 540px;
    margin: 0 auto 36px;
}

.premium__cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.premium__cta .btn--primary {
    background: #FFFFFF;
    color: var(--blue-end);
    border-color: transparent;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.5) inset,
        0 10px 30px -8px rgba(0, 0, 0, 0.4);
}
.premium__cta .btn--primary:hover {
    background: #F5F5F7;
}

.premium__cta .btn--ghost {
    background: transparent;
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: none;
}
.premium__cta .btn--ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 640px) {
    .premium__inner { padding: 48px 24px; }
}

/* ─────────────────────────────────────────────────────────────
   Footer
   ───────────────────────────────────────────────────────────── */

.footer {
    border-top: 1px solid var(--hairline);
    padding: 64px 0 32px;
}

.footer__inner {
    width: var(--shell);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    padding-bottom: 48px;
}

@media (max-width: 800px) {
    .footer__inner { grid-template-columns: 1fr; gap: 40px; }
}

.footer__tag {
    font-size: 13px;
    color: var(--text-3);
    margin-top: 8px;
}

.footer__cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

@media (max-width: 560px) {
    .footer__cols { grid-template-columns: repeat(2, 1fr); }
}

.footer__col h5 {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-1);
    margin-bottom: 16px;
}

.footer__col a {
    display: block;
    font-size: 13.5px;
    color: var(--text-3);
    padding: 4px 0;
    transition: color 0.2s var(--ease);
}
.footer__col a:hover { color: var(--text-1); }

.footer__base {
    width: var(--shell);
    margin: 0 auto;
    padding-top: 24px;
    border-top: 1px solid var(--hairline);
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-4);
}

@media (max-width: 560px) {
    .footer__base { flex-direction: column; gap: 8px; }
}