/* Kirby's site: letters, stamps and airmail stripes, in Kirby's own blue.
 *
 * The blues are the app's (Sources/Design/KirbyTheme.swift), so the site and
 * the app agree the moment somebody downloads it. The paper and the airmail
 * red are the site's own.
 *
 * Nothing here loads from anywhere else: system fonts, no web fonts, no
 * analytics. A page promoting privacy that told Google about every visitor
 * would be the first thing a careful reader checked. The Content-Security-
 * Policy in _headers enforces it. */

:root {
    --paper: #faf7f0;
    --paper-2: #f2ede1;
    --card: #ffffff;
    --line: #e2dccd;
    --ink: #1b1d26;
    --ink-2: #4f5566;     /* 7.0:1 on paper */
    --ink-3: #5f6576;     /* 5.6:1 on paper */
    --blue: #3b50d4;      /* the app's accent; 6.0:1 on paper */
    --blue-deep: #1f2a6b; /* Kirby's suit */
    --red: #b8322a;       /* airmail; 5.6:1 on paper */
    --green: #0f7a55;
    --purple: #7a45b8;
    --amber: #9a6410;
    --shadow: 0 1px 2px rgb(40 30 10 / .06), 0 8px 24px rgb(40 30 10 / .08);

    --width: 1080px;
    --radius: 14px;
    --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    --serif: ui-serif, "New York", "Iowan Old Style", Georgia, serif;
    --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
    :root {
        --paper: #12141b;
        --paper-2: #181b24;
        --card: #1d2029;
        --line: #2c303c;
        --ink: #ecedf2;
        --ink-2: #a7adbb;
        --ink-3: #959cac;
        --blue: #7d8ff6;      /* lighter, so it still reads as text on night */
        --blue-deep: #2a3680;
        --red: #ef6f64;
        --green: #4cc596;
        --purple: #b48cf0;
        --amber: #e0a94a;
        --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 10px 30px rgb(0 0 0 / .35);
    }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font: 17px/1.6 var(--sans);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.4rem, 6vw, 4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--width); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 10; background: var(--card); padding: 8px 14px; }

/* The airmail edge along the top of every page. */
.airmail {
    height: 10px;
    background: repeating-linear-gradient(-45deg,
        var(--red) 0 18px, var(--paper) 18px 26px,
        var(--blue) 26px 44px, var(--paper) 44px 52px);
}

/* Small capitals, like the printing on an envelope. */
.label {
    font: 600 .78rem/1.2 var(--mono);
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--red);
    margin: 0 0 .9em;
}

/* ---- Header ---- */
.top { padding: 18px 0; }
.top .wrap { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 1.3rem var(--serif); }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.top nav { margin-left: auto; display: flex; gap: 20px; flex-wrap: wrap; }
.top nav a { color: var(--ink-2); text-decoration: none; font-weight: 500; }
.top nav a:hover { color: var(--ink); }

/* ---- Hero ---- */
.hero { padding: 48px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero p.lead { font-size: 1.25rem; color: var(--ink-2); max-width: 34em; }
.hero h1 em { font-style: italic; color: var(--blue); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 14px; }
.button {
    display: inline-block; padding: 13px 22px; border-radius: 999px;
    font-weight: 600; text-decoration: none; border: 2px solid var(--blue);
}
.button.primary { background: #3b50d4; border-color: #3b50d4; color: #fff; }
.button.primary:hover { background: #2f42b8; }
.button.ghost { color: var(--blue); }
.small { font-size: .9rem; color: var(--ink-3); }

/* Kirby on a postage stamp, with a postmark across the corner. */
.stamp-wrap { position: relative; justify-self: center; width: min(400px, 100%); }
.stamp {
    padding: 22px;
    /* Perforations: holes punched all over the background, but the white mat
     * (the box-shadow on .stamp-inner) covers all but the outer 8px of it. */
    background: radial-gradient(circle at 8px 8px, transparent 5px, #fffdf8 5.5px) -8px -8px / 16px 16px;
    filter: drop-shadow(0 10px 22px rgb(40 30 10 / .18));
    transform: rotate(-3deg);
}
.stamp-inner {
    border: 2px solid var(--blue-deep);
    background:
        radial-gradient(circle at 50% 38%, #e8ecff 0, #c9d2fb 55%, #a9b6f2 100%);
    padding: 18px 18px 0;
    position: relative;
    box-shadow: 0 0 0 14px #fffdf8; /* stamps are paper, even at night */
}
.stamp-inner img { margin: 0 auto; width: 88%; }
.stamp-caption {
    display: flex; justify-content: space-between; align-items: baseline;
    background: var(--blue-deep); color: #fff;
    margin: 0 -18px; padding: 8px 14px;
    font: 700 .8rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
}
.stamp-caption b { font: 700 1.5rem/1 var(--serif); letter-spacing: 0; }
.postmark {
    position: absolute; right: -22px; top: -18px; width: 150px; height: 150px;
    color: var(--red); transform: rotate(14deg); opacity: .9; pointer-events: none;
}
@media (prefers-color-scheme: dark) { .stamp-inner { background: radial-gradient(circle at 50% 38%, #3a4aa8 0, #27347f 60%, #1b2560 100%); } }

/* ---- Sections ---- */
section { padding: 72px 0; }
section.alt { background: var(--paper-2); }
.section-head { max-width: 44em; margin-bottom: 36px; }
.section-head p { color: var(--ink-2); font-size: 1.1rem; }

/* Letter cards, each with an airmail edge along the top. */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 18px; }
.letter {
    background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 22px 22px 18px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.letter::before {
    content: ""; position: absolute; inset: 0 0 auto 0; height: 5px;
    background: repeating-linear-gradient(-45deg, var(--red) 0 10px, transparent 10px 14px, var(--blue) 14px 24px, transparent 24px 28px);
}
.letter h3 { margin-top: 6px; }
.letter p { color: var(--ink-2); margin: 0; }
.letter .icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--paper-2); color: var(--blue); margin-bottom: 10px; }
.letter .icon svg { width: 22px; height: 22px; }

/* ---- The mailbox demo ---- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.mailbox {
    background: var(--card); border: 1px solid var(--line); border-radius: 18px;
    box-shadow: var(--shadow); overflow: hidden; font-size: .95rem;
}
.mailbox-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--paper-2); }
.mailbox-bar i { width: 12px; height: 12px; border-radius: 50%; background: var(--line); }
.mailbox-bar span { margin-left: 10px; font-weight: 600; color: var(--ink-2); font-size: .85rem; }
.bundle { padding: 10px 16px 4px; font: 600 .72rem var(--mono); letter-spacing: .12em; text-transform: uppercase; display: flex; align-items: center; gap: 8px; color: var(--ink-3); }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.row { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 10px 16px; border-top: 1px solid var(--line); align-items: center; }
.row b { font-weight: 600; }
.row .subject { color: var(--ink-2); grid-column: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row .side { grid-row: 1 / span 2; grid-column: 2; display: flex; gap: 8px; align-items: center; }
.tag { font: 600 .72rem var(--mono); letter-spacing: .04em; padding: 3px 8px; border-radius: 999px; border: 1px solid currentColor; white-space: nowrap; }
.tag.blocked { color: var(--red); }
.tag.vip { color: var(--blue); }
.unsub {
    font: 600 .82rem var(--sans); color: #fff; background: #3b50d4; border: 0;
    padding: 7px 12px; border-radius: 999px; cursor: pointer;
}
.unsub:hover { background: #2f42b8; }
.row.gone .subject, .row.gone b { text-decoration: line-through; color: var(--ink-3); }
.status { grid-column: 1 / -1; font-size: .85rem; color: var(--green); }
.priority { margin: 12px 16px; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--blue); background: color-mix(in srgb, var(--blue) 10%, var(--card)); }
.priority b { color: var(--blue); font-size: .8rem; display: block; }

.ticks { list-style: none; padding: 0; margin: 20px 0 0; }
.ticks li { padding-left: 32px; position: relative; margin-bottom: 12px; color: var(--ink-2); }
.ticks li strong { color: var(--ink); }
.ticks li::before {
    content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px; border-radius: 50%;
    background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3L15 6.8' fill='none' stroke='white' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat;
}

/* ---- Privacy ---- */
.privacy-hero { display: grid; grid-template-columns: auto 1fr; gap: 40px; align-items: center; margin-bottom: 40px; }
.privacy-hero img { width: 220px; }
.ledger { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.ledger div { display: grid; grid-template-columns: 11em 1fr; gap: 16px; padding: 14px 20px; border-top: 1px dashed var(--line); }
.ledger div:first-child { border-top: 0; }
.ledger dt { font: 600 .8rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--red); padding-top: 3px; }
.ledger dd { margin: 0; color: var(--ink-2); }

/* ---- Screens ---- */
.screens { display: flex; gap: 22px; overflow-x: auto; padding: 8px 4px 22px; scroll-snap-type: x mandatory; }
.screens figure { margin: 0; flex: 0 0 auto; scroll-snap-align: start; }
.screens img { height: 520px; width: auto; border-radius: 28px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.screens img.mac { border-radius: 12px; height: 520px; }
.screens figcaption { text-align: center; color: var(--ink-3); font-size: .9rem; margin-top: 10px; }

/* ---- Pricing ---- */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.plan.paid { border: 2px solid var(--blue); }
.plan .price { font: 700 1.1rem var(--serif); color: var(--blue); margin-bottom: 8px; }
.plan ul { padding-left: 1.1em; margin: 0; color: var(--ink-2); }
.plan li { margin-bottom: 6px; }

/* ---- Sign-off ---- */
.envelope {
    background: var(--card); border: 1px solid var(--line); border-radius: 6px; box-shadow: var(--shadow);
    padding: 40px; position: relative; text-align: center; overflow: hidden;
}
.envelope::before, .envelope::after {
    content: ""; position: absolute; left: 0; right: 0; height: 8px;
    background: repeating-linear-gradient(-45deg, var(--red) 0 14px, var(--card) 14px 20px, var(--blue) 20px 34px, var(--card) 34px 40px);
}
.envelope::before { top: 0; }
.envelope::after { bottom: 0; }
.envelope h2 { margin-top: 8px; }
.envelope .actions { justify-content: center; }

/* ---- Pages of prose ---- */
.prose { max-width: 720px; margin: 0 auto; padding: 40px 20px 72px; }
.prose h1 { font-size: clamp(2.2rem, 5vw, 3rem); }
.prose h2 { font-size: 1.5rem; margin-top: 1.8em; }
.prose .updated { color: var(--ink-3); font-size: .9rem; }
.prose .lead { font-size: 1.2rem; color: var(--ink-2); }
.signature { font: italic 1.6rem var(--serif); color: var(--blue); margin-top: 1.4em; }

/* ---- Footer ---- */
footer { padding: 40px 0 56px; border-top: 1px solid var(--line); color: var(--ink-3); font-size: .92rem; }
footer .wrap { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer nav a { color: var(--ink-2); }
footer .made { margin-left: auto; }

@media (max-width: 860px) {
    .hero .wrap, .split { grid-template-columns: 1fr; }
    .stamp-wrap { width: min(320px, 86%); margin-top: 8px; }
    .privacy-hero { grid-template-columns: 1fr; }
    .privacy-hero img { width: 180px; }
    .ledger div { grid-template-columns: 1fr; gap: 4px; }
    .screens img { height: 440px; }
    .screens img.mac { height: 260px; }
    section { padding: 56px 0; }
    .top nav { margin-left: 0; width: 100%; }
    footer .made { margin-left: 0; }
}

@media (max-width: 520px) {
    /* The tracker count and the button go under the subject on a phone. */
    .row { grid-template-columns: 1fr; }
    .row .side { grid-row: auto; grid-column: 1; flex-wrap: wrap; margin-top: 4px; }
}

@media (prefers-reduced-motion: no-preference) {
    .stamp { transition: transform .4s ease; }
    .stamp-wrap:hover .stamp { transform: rotate(-1deg) scale(1.01); }
}

@media print {
    .airmail, .top nav, .actions, .screens { display: none; }
    body { background: #fff; color: #000; }
    section { padding: 24px 0; }
}