:root {
    color-scheme: light;
    font-family: Inter, ui-sans-serif, system-ui, sans-serif;
    color: #172033;
    background: #f5f7fb;
}

* { box-sizing: border-box; }

body {
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0;
    display: flex;
    flex-direction: column;
}

a { color: #165d54; }

.site-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .75rem;
    padding: 1.25rem max(5vw, 1rem);
    background: #fff;
    border-bottom: 1px solid #e4e9f0;
    text-align: center;
}

.brand {
    color: #172033;
    font-size: 1.25rem;
    font-weight: 750;
    text-decoration: none;
}

nav, nav form, .actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

nav a { text-decoration: none; }
nav form { margin: 0; }

.link-button {
    padding: 0;
    border: 0;
    color: #165d54;
    background: none;
    font: inherit;
    cursor: pointer;
}

.site-main {
    width: min(100% - 2rem, 1100px);
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    padding: clamp(1.5rem, 6vh, 4rem) 0;
}

.hero {
    max-width: 720px;
    margin: 2rem auto;
    text-align: center;
}

.hero h1 { margin: .5rem 0 1rem; font-size: clamp(2.2rem, 6vw, 4rem); }
.hero p { color: #5f6b7b; line-height: 1.65; }
.eyebrow { color: #167064; font-size: .78rem; font-weight: 750; letter-spacing: .12em; }
.actions { justify-content: center; margin-top: 2rem; }

.button {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    padding: .7rem 1.1rem;
    border: 1px solid #165d54;
    border-radius: 8px;
    color: #fff;
    background: #165d54;
    font: inherit;
    font-weight: 650;
    text-decoration: none;
    cursor: pointer;
}

.button--small { min-height: 38px; padding: .45rem .8rem; }
.button--secondary { color: #165d54; background: #fff; }

.auth-card {
    width: min(100%, 440px);
    margin: 0 auto;
    padding: clamp(1.25rem, 5vw, 2rem);
    border: 1px solid #e4e9f0;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 12px 35px rgb(23 32 51 / 6%);
    text-align: center;
}

.auth-card h1 { margin-bottom: .5rem; }
.auth-card > p:not(.eyebrow, .auth-link) { color: #5f6b7b; }
.auth-card form { display: grid; gap: .6rem; margin-top: 1.5rem; }
.auth-card label { margin-top: .5rem; font-weight: 650; }
.auth-card input:not([type=hidden]) {
    width: 100%;
    min-height: 52px;
    padding: .65rem .75rem;
    border: 1px solid #cbd4df;
    border-radius: 7px;
    font: inherit;
}

.auth-card button { width: 100%; min-height: 52px; margin-top: .8rem; }
.auth-link { margin: 1.25rem 0 0; text-align: center; }
.error { padding: .8rem; border-radius: 7px; color: #8d1d1d; background: #fff0f0; }
.notice { padding: .8rem; border-radius: 7px; color: #175c40; background: #e8f7ef; }
.site-footer { padding: 1rem; color: #687486; text-align: center; }

@media (max-width: 600px) {
    .site-header { gap: .6rem; padding: 1rem; }
    nav { flex-wrap: wrap; gap: .75rem; }
    .site-main { width: min(100% - 1.5rem, 440px); padding: 1.25rem 0; }
    .auth-card { border-radius: 12px; }
}