:root {
    --bg: #ffffff;
    --bg-card: #f8f9fa;
    --text: #111827;
    --text-secondary: #6b7280;
    --accent: #0d9488;
    --accent-hover: #0f766e;
    --border: #e5e7eb;
    --btn-hover: rgba(0,0,0,0.04);
    --error: #ef4444;
    --success: #22c55e;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f172a;
        --bg-card: #1e293b;
        --text: #f1f5f9;
        --text-secondary: #94a3b8;
        --accent: #2dd4bf;
        --accent-hover: #5eead4;
        --border: #334155;
        --btn-hover: rgba(255,255,255,0.06);
        --error: #f87171;
        --success: #4ade80;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.5;
}

.page {
    max-width: 520px;
    width: 100%;
    padding: 48px 24px;
}

.logo {
    width: 56px;
    height: 56px;
    color: var(--accent);
    margin-bottom: 24px;
}

h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 6px;
}

.sub {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 36px;
}

/* Auth buttons on landing */
.auth {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
}

/* Shared button styles */
.btn-primary, .btn-secondary {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 0;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: opacity .15s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover { opacity: .85; }

.btn-secondary {
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--btn-hover); }

.btn-primary svg, .btn-secondary svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Clients */
.section-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.clients {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 36px;
}

.client {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text);
    transition: background .15s;
}

.client:hover { background: var(--btn-hover); }

.client svg { width: 24px; height: 24px; flex-shrink: 0; }

.client-info { flex: 1; }

.client-name { font-size: 15px; font-weight: 600; }

.client-desc { font-size: 12px; color: var(--text-secondary); }

.arrow { width: 16px; height: 16px; color: var(--text-secondary); }

/* Footer */
.footer {
    padding-top: 24px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

.footer .server-name { font-weight: 600; color: var(--text); }

.footer .badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 10px;
    font-size: 12px;
    color: var(--accent);
}

.footer .badge svg { width: 14px; height: 14px; }

/* Form styles (login/register) */
.form-card {
    max-width: 400px;
    width: 100%;
    padding: 40px 24px;
}

.back {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 28px;
}

.back:hover { color: var(--text); }

.back svg { width: 16px; height: 16px; }

.form-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.form-sub {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.field {
    margin-bottom: 16px;
}

.field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.field input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text);
    font-size: 15px;
    outline: none;
    transition: border-color .15s;
}

.field input:focus {
    border-color: var(--accent);
}

.field input::placeholder {
    color: var(--text-secondary);
    opacity: .6;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: var(--accent);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity .15s;
    margin-top: 8px;
}

.submit-btn:hover { opacity: .85; }

.submit-btn:disabled {
    opacity: .5;
    cursor: not-allowed;
}

.form-error {
    color: var(--error);
    font-size: 13px;
    margin-top: 12px;
    display: none;
}

.form-success {
    color: var(--success);
    font-size: 13px;
    margin-top: 12px;
    display: none;
}

.form-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

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

.form-link a:hover { text-decoration: underline; }

.server-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.server-badge svg { width: 14px; height: 14px; color: var(--accent); flex-shrink: 0; }

.server-badge span { color: var(--text); font-weight: 600; }

/* Email verification step */
.step { display: none; }
.step.active { display: block; }

.info-box {
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    text-align: center;
    margin-bottom: 16px;
}

.info-box svg {
    width: 40px;
    height: 40px;
    color: var(--accent);
    margin-bottom: 8px;
}

.info-box p {
    font-size: 14px;
    color: var(--text-secondary);
}

.info-box .email-addr {
    color: var(--text);
    font-weight: 600;
}

@media (max-width: 480px) {
    .page { padding: 32px 16px; }
    .form-card { padding: 32px 16px; }
    h1 { font-size: 20px; }
    .auth { flex-direction: column; }
}