:root {
    --primary: #1B4F72;
    --accent:  #2980B9;
    --bg:      #f0f4f8;
}

html, body {
    height: 100%;
    margin: 0;
    background: var(--bg);
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    font-family: 'Segoe UI', Arial, sans-serif;
}

.login-card {
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 4px 32px rgba(27,79,114,.13);
    padding: 2.5rem 2rem 2rem;
    width: 100%;
    max-width: 420px;
}

.login-logo {
    display: block;
    height: 48px;
    margin: 0 auto 1.5rem;
    object-fit: contain;
}

.login-title {
    color: var(--primary);
    font-size: 1.35rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: .25rem;
}

.login-subtitle {
    color: #6c757d;
    font-size: .875rem;
    text-align: center;
    margin-bottom: 1.75rem;
}

.form-label {
    font-weight: 600;
    font-size: .85rem;
    color: #344054;
}

.form-control {
    border-radius: 8px;
    border: 1.5px solid #d0d5dd;
    padding: .65rem .9rem;
    font-size: .95rem;
    transition: border-color .2s;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(41,128,185,.15);
}

.btn-login {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: .7rem 1.5rem;
    font-size: .95rem;
    font-weight: 600;
    width: 100%;
    transition: background .2s, opacity .2s;
}

.btn-login:hover:not(:disabled) {
    background: #1f6fa4;
}

.btn-login:disabled {
    opacity: .65;
    cursor: not-allowed;
}

.remember-check {
    font-size: .85rem;
    color: #4a5568;
}

.remember-check .form-check-input:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

.alert-box {
    border-radius: 8px;
    font-size: .875rem;
    padding: .75rem 1rem;
}

.success-view {
    text-align: center;
    padding: 1rem 0;
}

.success-icon {
    font-size: 3rem;
    color: #27ae60;
    margin-bottom: 1rem;
}

.success-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: .5rem;
}

.success-text {
    color: #6c757d;
    font-size: .9rem;
}

.otp-section {
    margin-top: 1.5rem;
    text-align: left;
}

.otp-divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: #adb5bd;
    font-size: .8rem;
    margin-bottom: 1rem;
}
.otp-divider::before,
.otp-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid #dee2e6;
}
.otp-divider span {
    padding: 0 .75rem;
}

.otp-hint {
    font-size: .82rem;
    color: #6c757d;
    margin-bottom: .5rem;
}

.otp-input {
    display: block;
    width: 100%;
    padding: .75rem;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: .5rem;
    text-align: center;
    border: 1.5px solid #d0d5dd;
    border-radius: 8px;
    outline: none;
    font-family: monospace;
    transition: border-color .2s;
    box-sizing: border-box;
}
.otp-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(41,128,185,.15);
}

.otp-error {
    font-size: .82rem;
    color: #dc3545;
    margin-top: .4rem;
    padding: .4rem .6rem;
    background: #fff5f5;
    border-radius: 6px;
    border: 1px solid #f5c2c7;
}

@media (max-width: 480px) {
    .login-card {
        margin: 1rem;
        padding: 2rem 1.25rem 1.5rem;
    }
}