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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --border: #e2e8f0;
    --bg: #f1f5f9;
    --text: #1e293b;
    --text-light: #64748b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px 20px;
}

.register-box {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 560px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .2);
}

.register-logo {
    text-align: center;
    margin-bottom: 28px;
}

.register-logo h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
}

.register-logo p {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 4px;
}

.section-divider {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: .05em;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
    margin: 24px 0 16px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 5px;
}

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

.form-control {
    width: 100%;
    padding: 10px 13px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    transition: all .2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .1);
}

.error-list {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 20px;
    font-size: 0.875rem;
    color: #b91c1c;
}

.error-list li {
    margin-left: 16px;
    margin-bottom: 4px;
}

.password-hint {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-top: 4px;
}

.btn-submit {
    width: 100%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity .2s;
    margin-top: 8px;
}

.btn-submit:hover {
    opacity: .9;
}

.login-link {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: 16px;
}

.login-link a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.info-notice {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.82rem;
    color: #1e40af;
    margin-bottom: 20px;
}

 .btn-logout {
            background: none;
            border: 1px solid var(--border);
            color: var(--text-light);
            padding: 7px 14px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 0.85rem;
            text-decoration: none;
            transition: all .2s;
        }
        .btn-logout:hover {
            background: #fee2e2;
            border-color: var(--danger);
            color: var(--danger);
        }