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

:root {
    --primary:   #0f172a;
    --accent:    #a855f7;
    --accent-dk: #9333ea;
    --surface:   #ffffff;
    --bg:        #0f172a;
    --border:    #e2e8f0;
    --text-sec:  #64748b;
    --danger:    #ef4444;
    --success:   #22c55e;
    --radius:    12px;
}

body.auth-body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-card {
    background: var(--surface);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px rgba(0,0,0,.4);
}
.auth-card--wide { max-width: 560px; }

.auth-logo {
    font-size: 28px;
    font-weight: 900;
    letter-spacing: -1px;
    color: var(--primary);
    margin-bottom: 24px;
    text-align: center;
}
.auth-logo span { color: var(--accent); }

.auth-title {
    font-size: 22px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 6px;
}
.auth-subtitle {
    font-size: 14px;
    color: var(--text-sec);
    text-align: center;
    margin-bottom: 28px;
}

.form-section-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--text-sec);
    margin: 20px 0 12px;
}

.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    transition: border-color .15s;
    font-family: inherit;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}
.form-group small {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-sec);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.req { color: var(--danger); }

.btn-primary {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 13px 20px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background .15s;
    text-decoration: none;
}
.btn-primary:hover { background: var(--accent-dk); }
.btn-block { display: block; width: 100%; text-align: center; }

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 20px;
}
.alert-error   { background: #fef2f2; color: var(--danger); }
.alert-success { background: #f0fdf4; color: #16a34a; }

.auth-footer {
    text-align: center;
    font-size: 14px;
    color: var(--text-sec);
    margin-top: 20px;
}
.auth-footer a { color: var(--accent); text-decoration: none; font-weight: 600; }
.auth-footer a:hover { text-decoration: underline; }

.form-legal {
    font-size: 12px;
    color: var(--text-sec);
    text-align: center;
    margin-top: 10px;
}

@media (max-width: 480px) {
    .auth-card { padding: 28px 20px; }
    .form-row { grid-template-columns: 1fr; }
}