/* Echo landing page. Colours follow the two screenshot themes: dark with the blue accent, light with the warm olive one. */

:root {
    --radius: 18px;
    --max: 1120px;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #131417;
    --bg-soft: #1c1d21;
    --card: #202126;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f2f2f4;
    --muted: #a0a1a8;
    --accent: #4f8ef7;
    --accent-text: #ffffff;
    --glow: rgba(79, 142, 247, 0.28);
}

:root[data-theme="light"] {
    color-scheme: light;
    --bg: #d6d4ce;
    --bg-soft: #cbc8c1;
    --card: #e2e0da;
    --border: rgba(40, 38, 30, 0.14);
    --text: #2b2a22;
    --muted: #6d6a5c;
    --accent: #4d6a26;
    --accent-text: #ffffff;
    --glow: rgba(77, 106, 38, 0.22);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 72px;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.35s ease, color 0.35s ease;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

code {
    font-family: "SF Mono", ui-monospace, Menlo, monospace;
    font-size: 0.9em;
    padding: 0.1em 0.35em;
    border-radius: 6px;
    background: var(--bg-soft);
}

h1, h2, h3 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin: 0 0 0.5em;
}

h1 {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
}

h2 {
    font-size: clamp(1.7rem, 3.4vw, 2.4rem);
}

h3 {
    font-size: 1.05rem;
}

p {
    margin: 0 0 1em;
}

/* Top bar */

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px max(20px, calc((100% - var(--max)) / 2));
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid var(--border);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 700;
    font-size: 1.1rem;
}

.brand:hover {
    text-decoration: none;
}

.topbar nav {
    display: flex;
    align-items: center;
    gap: 22px;
}

.topbar nav a {
    color: var(--muted);
    font-size: 0.95rem;
}

.topbar nav a:hover {
    color: var(--text);
    text-decoration: none;
}

/* Dark / Light switch: a small segmented control */

.theme-toggle {
    display: inline-flex;
    padding: 3px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--bg-soft);
    cursor: pointer;
    font: inherit;
}

.theme-toggle-option {
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--muted);
    transition: background-color 0.25s ease, color 0.25s ease;
}

:root[data-theme="dark"] .theme-toggle-option[data-value="dark"],
:root[data-theme="light"] .theme-toggle-option[data-value="light"] {
    background: var(--accent);
    color: var(--accent-text);
}

/* Hero */

main {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 20px;
}

.hero {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    align-items: center;
    gap: 48px;
    padding: 72px 0 56px;
}

.hero-icon {
    display: block;
    margin-bottom: 20px;
    filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.25));
}

.lede {
    font-size: 1.2rem;
    color: var(--muted);
    max-width: 34em;
}

.cta {
    margin-top: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1.05rem;
    transition: transform 0.15s ease, box-shadow 0.25s ease;
}

.button:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.button.primary {
    background: var(--accent);
    color: var(--accent-text);
    box-shadow: 0 8px 28px var(--glow);
}

.button svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.cta-note {
    margin-top: 14px;
    font-size: 0.9rem;
    color: var(--muted);
}

.hero-shots {
    position: relative;
    height: 600px;
}

.hero-shots::before {
    /* soft accent glow behind the screenshots */
    content: "";
    position: absolute;
    inset: 15% 10%;
    background: radial-gradient(closest-side, var(--glow), transparent);
    filter: blur(30px);
}

/* Screenshots: shown at their native size (they include the window shadow) */

.shot {
    display: block;
    max-width: 100%;
    height: auto;
    transition: opacity 0.3s ease;
}

.shot.swapping {
    opacity: 0;
}

.hero-shots .shot {
    position: absolute;
    width: 300px;
}

.hero-shots .back {
    top: 30px;
    left: 0;
    transform: rotate(-4deg);
}

.hero-shots .front {
    top: 0;
    right: 0;
}

/* Feature showcases */

.showcase {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    align-items: center;
    gap: 56px;
    padding: 64px 0;
    border-top: 1px solid var(--border);
}

.showcase.reverse .showcase-text {
    order: 2;
}

.showcase-text p {
    font-size: 1.1rem;
    color: var(--muted);
}

.shot.wide {
    width: 600px;
    justify-self: center;
}

.shot-pair {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 12px;
}

.shot-pair .shot {
    width: 300px;
    min-width: 0;
    flex: 0 1 auto;
}

/* Feature grid */

.features {
    padding: 64px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 32px;
    text-align: left;
}

.grid article {
    padding: 20px 22px;
    border-radius: var(--radius);
    background: var(--card);
    border: 1px solid var(--border);
}

.grid article h3 {
    color: var(--text);
}

.grid article p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.formats {
    margin-top: 28px;
    color: var(--muted);
    font-size: 0.95rem;
}

/* Install steps */

.install {
    padding: 64px 0 80px;
    border-top: 1px solid var(--border);
}

.install h2 {
    text-align: center;
    margin-bottom: 32px;
}

.install ol {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    max-width: 720px;
    display: grid;
    gap: 16px;
}

.install li {
    display: flex;
    gap: 18px;
    padding: 20px 22px;
    border-radius: var(--radius);
    background: var(--card);
    border: 1px solid var(--border);
}

.install li p {
    margin: 0;
    color: var(--muted);
}

.install strong {
    color: var(--text);
}

.step {
    flex: none;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--accent-text);
    font-weight: 700;
}

footer {
    padding: 28px 20px 40px;
    text-align: center;
    color: var(--muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
}

/* Narrow windows and phones */

@media (max-width: 900px) {
    .hero,
    .showcase {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }

    .hero {
        padding-top: 48px;
    }

    .hero-icon {
        margin: 0 auto 20px;
    }

    .lede {
        margin: 0 auto 1em;
    }

    .hero-shots {
        height: 540px;
        max-width: 520px;
        width: 100%;
        margin: 0 auto;
    }

    .showcase.reverse .showcase-text {
        order: 0;
    }
}

@media (max-width: 560px) {
    .topbar nav a {
        display: none;
    }

    .hero-shots {
        height: auto;
    }

    .hero-shots .shot {
        position: static;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
        transform: none;
    }

    .hero-shots .back {
        display: none;
    }

    .shot-pair {
        flex-direction: column;
        align-items: center;
    }
}

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

    * {
        transition: none !important;
    }
}