/* ===================================================================
   Harbor — design tokens
   Default palette (Midnight) mirrors the app icon: navy-black + green.
   Every other [data-theme] block is one of Harbor's real built-in
   themes, lifted from the in-app Appearance picker. Switching themes
   here (nav palette button, or the Appearance section) re-skins the
   whole site through these custom properties — nothing else changes.
=================================================================== */
:root {
    --bg: #0a0d16;
    --surface: #10141f;
    --elevated: #161b29;
    --card: #1b2233;
    --line: rgba(232, 238, 250, 0.10);
    --text: #f3f6fb;
    --muted: #a6b0c3;
    --soft: #7c879c;
    --accent: #3ddc8a;
    --accent-2: #4fb6c6;
    --on-accent: #04140c;
    --warn: #f0b35a;
    --danger: #ef6f68;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
    --radius: 14px;
    --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", system-ui, sans-serif;
    --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

[data-theme="harbor"] {
    --bg: #060f0e; --surface: #0b1817; --elevated: #102220; --card: #142a27;
    --line: rgba(220, 245, 240, 0.10); --text: #eefaf6; --muted: #9fb8b2; --soft: #739089;
    --accent: #2dd4bf; --accent-2: #3ddc8a; --on-accent: #03110f; --warn: #f0b35a; --danger: #ef6f68;
}
[data-theme="graphite"] {
    --bg: #15171c; --surface: #1b1e25; --elevated: #21252e; --card: #272c36;
    --line: rgba(230, 232, 240, 0.10); --text: #f1f2f6; --muted: #a7acb9; --soft: #7d8492;
    --accent: #7c8cf0; --accent-2: #9aa6f5; --on-accent: #0b0e1c; --warn: #f0b35a; --danger: #ef6f68;
}
[data-theme="obsidian"] {
    --bg: #0a0a0c; --surface: #100f14; --elevated: #161520; --card: #1c1a28;
    --line: rgba(235, 230, 245, 0.10); --text: #f2f0f7; --muted: #aba6bd; --soft: #7d7791;
    --accent: #a78bfa; --accent-2: #c4b5fd; --on-accent: #170f29; --warn: #f0b35a; --danger: #ef6f68;
}
[data-theme="nord"] {
    --bg: #2e3440; --surface: #343b48; --elevated: #3b4252; --card: #434c5e;
    --line: rgba(236, 239, 244, 0.14); --text: #eceff4; --muted: #b0b9c8; --soft: #828da0;
    --accent: #88c0d0; --accent-2: #81a1c1; --on-accent: #1b2530; --warn: #ebcb8b; --danger: #bf616a;
}
[data-theme="dracula"] {
    --bg: #1e1f29; --surface: #282a36; --elevated: #2f3142; --card: #383a4f;
    --line: rgba(248, 248, 242, 0.10); --text: #f8f8f2; --muted: #a9abc9; --soft: #87899f;
    --accent: #50fa7b; --accent-2: #bd93f9; --on-accent: #0c1f12; --warn: #f1fa8c; --danger: #ff5555;
}
[data-theme="solarized"] {
    --bg: #00252e; --surface: #073642; --elevated: #0b424f; --card: #0f4f5d;
    --line: rgba(238, 232, 213, 0.14); --text: #eee8d5; --muted: #9db1b1; --soft: #6b8189;
    --accent: #2aa198; --accent-2: #268bd2; --on-accent: #062024; --warn: #cb8916; --danger: #dc322f;
}
[data-theme="oceanic"] {
    --bg: #11192e; --surface: #16213e; --elevated: #1c2a4d; --card: #22315c;
    --line: rgba(225, 234, 250, 0.10); --text: #eef2fb; --muted: #9aa9c7; --soft: #71819d;
    --accent: #5fb0e8; --accent-2: #3ddc8a; --on-accent: #071224; --warn: #f0b35a; --danger: #ef6f68;
}
[data-theme="forest"] {
    --bg: #081a0d; --surface: #0e2614; --elevated: #15311b; --card: #1c3d22;
    --line: rgba(225, 240, 225, 0.10); --text: #eef7ee; --muted: #a3bfa6; --soft: #79937c;
    --accent: #4ddd6f; --accent-2: #9fd65c; --on-accent: #04150a; --warn: #f0b35a; --danger: #ef6f68;
}
[data-theme="grape"] {
    --bg: #160d22; --surface: #1d1230; --elevated: #25173d; --card: #2d1d4a;
    --line: rgba(240, 232, 250, 0.10); --text: #f4eefc; --muted: #b6a6cf; --soft: #8b7aa8;
    --accent: #b685f0; --accent-2: #f088d8; --on-accent: #1a0f2b; --warn: #f0b35a; --danger: #ef6f68;
}
[data-theme="tokyonight"] {
    --bg: #14151f; --surface: #1a1b2e; --elevated: #20223a; --card: #262a45;
    --line: rgba(220, 224, 245, 0.10); --text: #eef0fc; --muted: #9ea4c2; --soft: #767ca0;
    --accent: #5b8cf0; --accent-2: #bb9af7; --on-accent: #0d1730; --warn: #e0af68; --danger: #f7768e;
}
[data-theme="daylight"] {
    --bg: #f6f7f4; --surface: #ffffff; --elevated: #ffffff; --card: #eef1ea;
    --line: rgba(20, 24, 20, 0.12); --text: #14181b; --muted: #555d59; --soft: #7b837e;
    --accent: #1f8a55; --accent-2: #1f7a8c; --on-accent: #ffffff; --warn: #9a5b06; --danger: #b3261e;
    --shadow: 0 18px 50px rgba(20, 30, 25, 0.10);
}

/* ===================================================================
   Base
=================================================================== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-sans);
    line-height: 1.55;
    color: var(--text);
    background:
        radial-gradient(circle at 80% 6%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 32%),
        radial-gradient(circle at 8% 70%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 36%),
        linear-gradient(180deg, var(--bg) 0%, var(--surface) 44%, var(--bg) 100%);
    -webkit-font-smoothing: antialiased;
    transition: background-color .25s ease, color .25s ease;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code { font-family: var(--font-mono); }

::selection { background: color-mix(in srgb, var(--accent) 35%, transparent); }

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

/* ===================================================================
   Nav
=================================================================== */
.nav {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    backdrop-filter: blur(18px);
}
.nav-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 13px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 750; letter-spacing: -0.01em; font-size: 16px; }
.brand img { width: 32px; height: 32px; border-radius: 8px; box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 30%, transparent); }
.nav-links { display: flex; align-items: center; gap: 20px; color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--text); }

/* theme switcher */
.theme-btn-wrap { position: relative; }
.theme-btn {
    display: inline-flex; align-items: center; gap: 8px;
    font: inherit; font-size: 13px; font-weight: 650; color: var(--text);
    background: var(--card); border: 1px solid var(--line); border-radius: 999px;
    padding: 7px 13px 7px 10px; cursor: pointer;
}
.theme-btn:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.theme-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); flex: none; }
.theme-pop {
    position: absolute; top: calc(100% + 12px); right: 0; width: 300px;
    background: var(--elevated); border: 1px solid var(--line); border-radius: 16px;
    box-shadow: var(--shadow); padding: 14px; display: none; z-index: 50;
}
.theme-pop.open { display: block; }
.theme-pop-label { font: 650 11px/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--soft); margin: 2px 4px 10px; }

/* ===================================================================
   Buttons
=================================================================== */
.button {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    min-height: 40px; padding: 10px 18px; border-radius: 9px;
    border: 1px solid var(--line); background: color-mix(in srgb, var(--text) 5%, transparent);
    color: var(--text); font-weight: 650; font-size: 14px; cursor: pointer;
    transition: transform .15s ease, border-color .15s ease, filter .15s ease;
}
.button.primary {
    color: var(--on-accent);
    background: var(--accent);
    border-color: transparent;
    box-shadow: 0 14px 34px color-mix(in srgb, var(--accent) 30%, transparent);
}
.button.primary:hover { filter: brightness(1.05); transform: translateY(-1px); }
.button:hover { border-color: color-mix(in srgb, var(--text) 24%, var(--line)); }

/* ===================================================================
   Hero
=================================================================== */
.hero {
    max-width: 1180px; margin: 0 auto; padding: 68px 22px 36px;
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(380px, 0.92fr);
    gap: 54px; align-items: center;
}
.eyebrow {
    display: inline-flex; gap: 8px; align-items: center; color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
    border-radius: 999px; padding: 6px 12px;
    font: 700 12.5px/1 var(--font-mono); letter-spacing: 0.03em;
}
.hero h1 {
    margin: 22px 0 18px; max-width: 640px;
    font-size: clamp(40px, 6.4vw, 68px); line-height: 1.03; letter-spacing: -0.02em; font-weight: 780;
}
.hero p.sub { margin: 0; max-width: 580px; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.meta-row { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 20px; color: var(--soft); font: 600 12.5px/1 var(--font-mono); letter-spacing: 0.02em; }
.meta-row span::before { content: "—"; margin-right: 6px; color: var(--line); }
.meta-row span:first-child::before { display: none; }

.hero-art { position: relative; isolation: isolate; }
.shot-frame {
    border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
    background: var(--surface); box-shadow: var(--shadow);
}
.shot-frame img { width: 100%; height: auto; }
.shot-primary {
    position: relative; z-index: 2;
    border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
    transition: transform .4s cubic-bezier(.2,.8,.2,1);
}
.shot-secondary {
    position: absolute; width: 44%; top: -38px; left: -30px; z-index: 1;
    transform: rotate(-8deg); opacity: 0.95;
    transition: transform .4s cubic-bezier(.2,.8,.2,1), opacity .4s ease;
}
.hero-art:hover .shot-primary { transform: translate(3px, 3px); }
.hero-art:hover .shot-secondary { transform: rotate(-4deg) translate(-8px, -8px); }

/* capability strip */
.capabilities {
    max-width: 1180px; margin: 0 auto; padding: 0 22px 64px;
    display: flex; flex-wrap: wrap; gap: 0;
    font: 650 12.5px/1 var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--soft);
}
.capabilities span { padding: 10px 22px 10px 0; margin-right: 22px; border-right: 1px solid var(--line); }
.capabilities span:last-child { border-right: none; margin-right: 0; }

/* ===================================================================
   Sections
=================================================================== */
.section { max-width: 1180px; margin: 0 auto; padding: 64px 22px; }
.section-head { max-width: 720px; margin-bottom: 30px; }
.section-head .eyebrow { margin-bottom: 14px; }
.section h2 { margin: 0 0 12px; font-size: clamp(28px, 4vw, 42px); line-height: 1.06; letter-spacing: -0.015em; font-weight: 760; }
.section p.lead { margin: 0; color: var(--muted); font-size: 17px; max-width: 620px; }
.section + .section { border-top: 1px solid var(--line); }

/* feature grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature {
    min-height: 178px; padding: 22px; border: 1px solid var(--line); border-radius: 12px;
    background: color-mix(in srgb, var(--text) 3%, transparent);
    transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.feature:hover { border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); transform: translateY(-2px); }
.feature .icon {
    width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center; margin-bottom: 16px;
    background: color-mix(in srgb, var(--accent-2) 16%, transparent); color: var(--accent-2);
}
.feature:nth-child(3n+2) .icon { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.feature:nth-child(3n) .icon { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }
.feature .icon svg { width: 19px; height: 19px; }
.feature h3 { margin: 0 0 8px; font-size: 17px; font-weight: 700; letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }
.feature .icon-shot { margin: 0 0 14px; border-radius: 7px; overflow: hidden; border: 1px solid var(--line); }
.feature .icon-shot img { width: 100%; height: auto; display: block; }

/* showcase rows (appearance / connect / settings) */
.showcase { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.showcase.reverse .showcase-art { order: 1; }
.showcase-copy h2 { margin: 0 0 14px; }
.showcase-copy p { color: var(--muted); font-size: 16.5px; margin: 0 0 22px; max-width: 480px; }
.detail-list { list-style: none; margin: 0 0 26px; padding: 0; display: grid; gap: 12px; }
.detail-list li { display: flex; gap: 11px; align-items: flex-start; color: var(--muted); font-size: 14.5px; }
.detail-list li svg { flex: none; width: 17px; height: 17px; margin-top: 2px; color: var(--accent); }
.detail-list li strong { color: var(--text); font-weight: 650; }
.showcase-art .shot-frame { box-shadow: var(--shadow); }
.showcase-art .shot-frame img { width: 100%; }

/* theme picker grid (used in Appearance section) */
.theme-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.theme-grid.compact { grid-template-columns: repeat(3, 1fr); gap: 8px; }
.swatch {
    all: unset; box-sizing: border-box; cursor: pointer; display: flex; flex-direction: column;
    justify-content: flex-end; min-height: 92px; border-radius: 10px; overflow: hidden;
    border: 1px solid var(--line); background: var(--sw-bg);
    transition: transform .15s ease, box-shadow .15s ease;
}
.theme-grid.compact .swatch { min-height: 56px; }
.swatch:hover { transform: translateY(-2px); }
.swatch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.swatch[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--sw-accent); }
.swatch-preview { display: flex; align-items: center; gap: 6px; padding: 13px 13px 0; }
.theme-grid.compact .swatch-preview { padding: 9px 10px 0; }
.swatch-dot { width: 13px; height: 13px; border-radius: 50%; background: var(--sw-accent); flex: none; }
.swatch-bar { height: 7px; width: 42px; border-radius: 4px; background: var(--sw-bar, rgba(255,255,255,.18)); }
.swatch-bar2 { height: 7px; width: 26px; border-radius: 4px; background: var(--sw-bar2, rgba(255,255,255,.11)); }
.theme-grid.compact .swatch-bar { width: 30px; }
.theme-grid.compact .swatch-bar2 { display: none; }
.swatch-name { padding: 10px 13px 12px; font-size: 12.5px; font-weight: 700; color: var(--sw-text, #fdfefe); }
.theme-grid.compact .swatch-name { padding: 7px 10px 9px; font-size: 11.5px; }

.appearance-note { margin-top: 18px; display: flex; align-items: center; gap: 9px; color: var(--soft); font: 600 12.5px/1.4 var(--font-mono); }
.appearance-note svg { width: 15px; height: 15px; color: var(--accent); flex: none; }

/* download */
.download {
    border: 1px solid var(--line); border-radius: 16px;
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 13%, var(--surface)), color-mix(in srgb, var(--accent-2) 9%, var(--surface)));
    padding: 32px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
}
.download h2 { margin: 0 0 8px; font-size: 28px; }
.download p { margin: 0; color: var(--muted); }
.checksum { margin-top: 14px; color: var(--soft); font: 12px var(--font-mono); word-break: break-all; }

/* inner pages */
.page { max-width: 760px; margin: 0 auto; padding: 70px 22px 90px; }
.page h1 { font-size: 42px; line-height: 1.06; letter-spacing: -0.02em; margin: 0 0 18px; }
.page h2 { margin-top: 36px; font-size: 21px; }
.page p, .page li { color: var(--muted); font-size: 15.5px; }
.page a { color: var(--accent); }
.page code { background: var(--card); padding: 2px 6px; border-radius: 5px; font-size: 13px; }

.footer { border-top: 1px solid var(--line); padding: 36px 22px; color: var(--soft); }
.footer-inner { max-width: 1180px; margin: 0 auto; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font-size: 13.5px; }
.footer a { color: var(--muted); margin-left: 18px; }
.footer a:hover { color: var(--text); }

/* ===================================================================
   Motion
=================================================================== */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .hero-art:hover .shot-primary, .hero-art:hover .shot-secondary { transform: none; }
    .button.primary:hover { transform: none; }
    .feature:hover { transform: none; }
}

/* ===================================================================
   Responsive
=================================================================== */
@media (max-width: 980px) {
    .showcase, .showcase.reverse { grid-template-columns: 1fr; }
    .showcase.reverse .showcase-art { order: 0; }
    .showcase-copy p { max-width: none; }
}
@media (max-width: 860px) {
    .nav-links a:not(.button) { display: none; }
    .hero { grid-template-columns: 1fr; padding-top: 48px; gap: 40px; }
    .hero-art { order: -1; }
    .shot-secondary { display: none; }
    .grid { grid-template-columns: 1fr; }
    .theme-grid { grid-template-columns: repeat(2, 1fr); }
    .download { grid-template-columns: 1fr; text-align: left; }
    .capabilities span { padding-right: 16px; margin-right: 16px; }
}
@media (max-width: 520px) {
    .theme-pop { width: calc(100vw - 44px); right: -16px; }
}