:root {
    color-scheme: light dark;
    --bg: #ffffff;
    --fg: #1d1d1f;
    --fg-muted: #6e6e73;
    --accent: #0a84ff;
    --accent-hover: #006edc;
    --border: rgba(0, 0, 0, 0.10);
    --card-bg: #f5f5f7;
    --error: #d70015;
    --success: #28a745;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1c1c1e;
        --fg: #f5f5f7;
        --fg-muted: #a1a1a6;
        --accent: #0a84ff;
        --accent-hover: #409cff;
        --border: rgba(255, 255, 255, 0.12);
        --card-bg: #2c2c2e;
        --error: #ff453a;
        --success: #32d74b;
    }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
                 system-ui, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 56px 24px 40px;
}

header.site {
    border-bottom: 1px solid var(--border);
    padding-bottom: 24px;
    margin-bottom: 40px;
}

header.site .top {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 8px;
}

header.site img.icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
}

header.site h1 {
    font-size: 1.6rem;
    letter-spacing: -0.01em;
    margin: 0;
}

header.site nav {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
    margin-top: 12px;
}

header.site nav a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
}

header.site nav a:hover { text-decoration: underline; }
header.site nav a[aria-current="page"] {
    color: var(--fg);
    text-decoration: none;
    cursor: default;
}

main h2 {
    font-size: 1.5rem;
    letter-spacing: -0.01em;
    margin: 40px 0 14px;
}

main h2:first-child { margin-top: 0; }

main h3 {
    font-size: 1.1rem;
    margin: 28px 0 10px;
}

main p { margin-bottom: 14px; }

main ul, main ol {
    margin: 0 0 14px 20px;
    padding-left: 4px;
}

main li { margin-bottom: 4px; }

a { color: var(--accent); }
a:hover { color: var(--accent-hover); }

code {
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    background: var(--card-bg);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.92em;
}

footer {
    margin-top: 80px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--fg-muted);
    font-size: 0.88rem;
}

footer nav {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    margin-top: 8px;
}

footer nav a { color: var(--fg-muted); text-decoration: none; }
footer nav a:hover { color: var(--accent); }

/* Hero on the landing page */
.hero {
    text-align: center;
    padding: 24px 0 32px;
}

.hero img.icon {
    width: 128px;
    height: 128px;
    border-radius: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
    margin-bottom: 22px;
}

.hero h1 {
    font-size: 2.2rem;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.hero .tagline {
    color: var(--fg-muted);
    font-size: 1.08rem;
}

.hero .cta-row {
    margin: 22px 0 0;
}

.cta {
    display: inline-block;
    padding: 11px 22px;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    border-radius: 999px;
    transition: background 0.15s, transform 0.05s;
}

.cta:hover  { background: var(--accent-hover); color: #fff; }
.cta:active { transform: translateY(1px); }

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 28px 0;
}

.feature {
    padding: 18px 18px 16px;
    background: var(--card-bg);
    border-radius: 12px;
}

.feature h3 {
    font-size: 0.98rem;
    margin: 0 0 6px;
}

.feature p {
    font-size: 0.92rem;
    color: var(--fg-muted);
    margin: 0;
}

/* Forms */
form {
    display: grid;
    gap: 14px;
    margin-top: 8px;
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: 4px;
    font-size: 0.95rem;
}

input[type="text"], input[type="email"], textarea {
    width: 100%;
    padding: 10px 14px;
    font: inherit;
    background: var(--card-bg);
    color: var(--fg);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: border-color 0.15s;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
}

textarea { min-height: 160px; resize: vertical; line-height: 1.5; }

.consent {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    font-size: 0.92rem;
    color: var(--fg-muted);
    margin-top: 4px;
}

.consent input { margin-top: 4px; }

button[type="submit"] {
    padding: 11px 26px;
    font: inherit;
    font-weight: 500;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    width: fit-content;
    transition: background 0.15s, transform 0.05s;
}

button[type="submit"]:hover { background: var(--accent-hover); }
button[type="submit"]:active { transform: translateY(1px); }

/* Honeypot */
.hp {
    position: absolute !important;
    left: -10000px !important;
    width: 1px !important;
    height: 1px !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.notice {
    padding: 14px 16px;
    border-radius: 8px;
    background: var(--card-bg);
    border-left: 3px solid var(--accent);
    margin: 16px 0;
}

.notice.error  { border-left-color: var(--error);   color: var(--fg); }
.notice.success { border-left-color: var(--success); color: var(--fg); }

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