:root {
    --navy: #061d33;
    --navy-soft: #0b3154;
    --blue: #1268b3;
    --blue-bright: #1976c9;
    --pale: #eef5fb;
    --line: #d7e2ec;
    --muted: #6d7f91;
    --danger: #c93645;
}

body {
    min-height: 100%;
    color: var(--navy);
    background:
        radial-gradient(circle at 18% 8%, rgba(25, 118, 201, .13), transparent 32rem),
        linear-gradient(145deg, #f5f9fc 0%, #e7f0f7 100%);
}

.home-shell { min-height: 100vh; display: grid; place-items: center; padding: 2rem 1rem; }
.home-card {
    position: relative;
    width: min(100%, 58rem);
    padding: 2.5rem;
    border: 1px solid rgba(137, 163, 186, .35);
    border-radius: 1.75rem;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 1.5rem 4rem rgba(6, 29, 51, .14);
}

.language-toggle {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    min-width: 3rem;
    min-height: 2.25rem;
    border: 1px solid var(--line);
    border-radius: .65rem;
    background: var(--pale);
    color: var(--navy-soft);
    font-weight: 800;
    cursor: pointer;
}

.brand-block { display: flex; align-items: center; justify-content: center; gap: 1rem; margin: .25rem auto 2rem; text-align: left; }
.brand-block img { width: 5.25rem; height: 5.25rem; object-fit: contain; }
.brand-block h1 { margin: 0; color: var(--navy); font-size: clamp(1.65rem, 4vw, 2.35rem); }
.brand-block p { margin: .3rem 0 0; color: var(--muted); }
.join-panel, .public-groups { width: min(100%, 43rem); margin: 0 auto; }

.join-panel {
    padding: 1.7rem;
    border: 1px solid var(--line);
    border-radius: 1.15rem;
    background: #fff;
    box-shadow: 0 .75rem 2rem rgba(6, 29, 51, .07);
}

.eyebrow { margin: 0 0 .35rem; color: var(--blue); font-size: .72rem; font-weight: 900; letter-spacing: .14em; }
h2 { margin: 0; color: var(--navy); }
.section-copy { margin: .45rem 0 1.25rem; color: var(--muted); }
label, legend { color: var(--navy-soft); font-weight: 750; }
input[type="text"], input[type="password"] {
    width: 100%;
    min-height: 3.15rem;
    margin-top: .4rem;
    padding: .75rem .9rem;
    border: 1px solid #c8d7e4;
    border-radius: .7rem;
    background: #fff;
    color: var(--navy);
    font: inherit;
}
input:focus { outline: 3px solid rgba(25, 118, 201, .17); border-color: var(--blue-bright); }
.inline-fields { display: grid; grid-template-columns: 1fr auto; gap: .7rem; align-items: end; }
.button { min-height: 3.15rem; padding: .72rem 1.25rem; border: 0; border-radius: .7rem; font: inherit; font-weight: 850; cursor: pointer; }
.button.primary { color: #fff; background: linear-gradient(135deg, #0a4f8c, var(--blue-bright)); }
.button:disabled { opacity: .55; cursor: wait; }
.button.full { width: 100%; margin-top: 1.1rem; }
.back-button { margin: 0 0 1rem; padding: 0; border: 0; background: transparent; color: var(--blue); font: inherit; font-weight: 800; cursor: pointer; }
.meeting-meta { margin: .45rem 0 1.2rem; color: var(--muted); }
.prejoin-form { display: grid; gap: 1rem; }
.optional-account { margin: 0; border: 1px solid var(--line); border-radius: .8rem; padding: .8rem .9rem; background: #f8fbfd; cursor: pointer; }
.optional-account span { display: flex; align-items: center; gap: .5rem; }
.optional-account input { width: 1.05rem; height: 1.05rem; accent-color: var(--blue); }
.optional-account small { display: block; margin: .35rem 0 0 1.55rem; color: var(--muted); font-weight: 500; }
.media-choice { display: grid; gap: .65rem; margin: .1rem 0 0; padding: 1rem; border: 1px solid var(--line); border-radius: .8rem; background: var(--pale); }
.media-choice label { display: flex; align-items: center; gap: .6rem; cursor: pointer; }
.media-choice input { width: 1.05rem; height: 1.05rem; }
.hidden { display: none !important; }
#errormessage { min-height: 1.5rem; margin: .8rem 0 0; color: var(--danger); font-weight: 750; }

.public-groups { margin-top: 2rem; }
.section-heading { margin-bottom: .8rem; }
.meeting-grid { display: grid; gap: .65rem; }
.meeting-card { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: .85rem; background: #f8fbfd; }
.meeting-card h3 { margin: 0; color: var(--navy); }
.meeting-card p { margin: .25rem 0 0; color: var(--muted); }
.meeting-card button { border: 0; background: transparent; color: var(--blue); font: inherit; font-weight: 850; cursor: pointer; }
.empty-groups { padding: 1rem; color: var(--muted); text-align: center; border: 1px dashed var(--line); border-radius: .8rem; }
.home-footer { margin-top: 2rem; padding-top: 1.15rem; border-top: 1px solid var(--line); text-align: center; }
.home-footer a { color: var(--blue); font-weight: 750; text-decoration: none; }

@media (max-width: 640px) {
    .home-shell { display: block; padding: 0; }
    .home-card { min-height: 100vh; padding: 4.5rem 1rem 1.5rem; border: 0; border-radius: 0; }
    .brand-block { align-items: center; }
    .brand-block img { width: 4rem; height: 4rem; }
    .brand-block p { font-size: .9rem; }
    .join-panel { padding: 1.2rem; }
    .inline-fields { grid-template-columns: 1fr; }
    .meeting-card { grid-template-columns: 1fr; }
    .meeting-card button { text-align: left; padding: 0; }
}