/* === RESET & BASE === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: #f0f4f8;
    color: #1a202c;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* === CARD === */
.card {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 420px;
}

/* === LOGO / HEADER === */
.card-header {
    text-align: center;
    margin-bottom: 2rem;
}

.card-header .logo {
    font-size: 2rem;
    font-weight: 800;
    color: #2b6cb0;
    letter-spacing: -1px;
}

.card-header .logo span {
    color: #63b3ed;
}

.card-header p {
    margin-top: 0.4rem;
    color: #718096;
    font-size: 0.95rem;
}

/* === FORM === */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 0.4rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    color: #1a202c;
    background: #f7fafc;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.form-group input:focus {
    border-color: #2b6cb0;
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.15);
    background: #fff;
}

/* === BUTTON === */
.btn {
    display: block;
    width: 100%;
    padding: 0.85rem;
    background: #2b6cb0;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: 0.5rem;
}

.btn:hover {
    background: #2c5282;
}

.btn:active {
    transform: scale(0.98);
}

/* === ALERTS === */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.alert-error {
    background: #fff5f5;
    color: #c53030;
    border: 1px solid #feb2b2;
}

.alert-success {
    background: #f0fff4;
    color: #276749;
    border: 1px solid #9ae6b4;
}

.alert-info {
    background: #ebf8ff;
    color: #2b6cb0;
    border: 1px solid #bee3f8;
}

/* === FOOTER LINK === */
.card-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: #718096;
}

.card-footer a {
    color: #2b6cb0;
    text-decoration: none;
    font-weight: 600;
}

.card-footer a:hover {
    text-decoration: underline;
}

/* === 2FA ikona === */
.icon-2fa {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.qr-code {
    display: block;
    margin: 1rem auto;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

/* === CARD2 — wider layout === */
.card2 {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 1080px;
}

/* === RESPONSIVE === */
@media (max-width: 480px) {
    .card {
        padding: 2rem 1.25rem;
    }
    .card2 {
        padding: 2rem 1.25rem;
    }
}