* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    height: 100%;
    overflow-x: hidden;
}
@media (max-width: 480px) {
    html, body {
        overflow-y: auto;
    }
}
body.bg-default {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}
.main-content {
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
}
.login-card {
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border: none;
    overflow: hidden;
    background: #ffffff;
    backdrop-filter: blur(20px);
}
.login-card .card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    padding: 1.5rem 1.5rem 1.25rem;
}
.login-card .card-header .welcome-text {
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin: 0;
    text-align: center;
}
.login-card .card-header .brand-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    margin-top: 0.25rem;
    letter-spacing: 1.5px;
}
.login-card .card-body {
    padding: 2rem 2rem 1.5rem;
}
.input-group-alternative {
    border-radius: 12px;
    border: 1.5px solid #e2e8f0;
    transition: all 0.2s ease;
    background: #ffffff;
}
.input-group-alternative:focus-within {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}
.input-group-text {
    background: transparent;
    border: none;
    color: #667eea;
    padding: 0.625rem 0.875rem;
}
.form-control {
    border: none;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    background: transparent;
}
.form-control:focus {
    box-shadow: none;
    background: transparent;
}
.form-control::placeholder {
    color: #94a3b8;
    font-weight: 400;
}
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 12px;
    padding: 0.75rem 2rem;
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.35);
    width: 100%;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.45);
}
.btn-primary:active {
    transform: translateY(0);
}
.custom-checkbox {
    margin-bottom: 1rem;
}
.custom-checkbox .custom-control-label {
    cursor: pointer;
    color: #64748b;
    font-size: 0.875rem;
}
.custom-checkbox .custom-control-label::before {
    border-radius: 6px;
    border: 1.5px solid #cbd5e1;
    width: 1.125rem;
    height: 1.125rem;
}
.custom-checkbox .custom-control-input:checked ~ .custom-control-label::before {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
}
.invalid-feedback {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    color: #ef4444;
    font-weight: 500;
}
.form-group {
    margin-bottom: 1.25rem;
}
.form-group:last-of-type {
    margin-bottom: 1rem;
}
#footer-main {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.75rem 1rem;
    background: transparent;
    z-index: 10;
}
#footer-main .copyright {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
}
#footer-main .copyright a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}
#footer-main .copyright a:hover {
    color: #ffffff;
}
@media (max-width: 768px) {
    .login-card .card-body {
        padding: 1.5rem 1.5rem 1.25rem;
    }
    .login-card .card-header {
        padding: 1.25rem 1.5rem 1rem;
    }
    .login-card .card-header .welcome-text {
        font-size: 1.125rem;
    }
    .login-card .card-header .brand-text {
        font-size: 0.75rem;
    }
    body.bg-default {
        padding: 0.75rem;
    }
    .main-content {
        max-width: 100%;
    }
}
@media (max-width: 480px) {
    .login-card {
        border-radius: 16px;
    }
    .login-card .card-body {
        padding: 1.25rem 1.25rem 1rem;
    }
    .login-card .card-header {
        padding: 1rem 1.25rem 0.875rem;
    }
    .login-card .card-header .welcome-text {
        font-size: 1rem;
    }
    .login-card .card-header .brand-text {
        font-size: 0.6875rem;
        letter-spacing: 1px;
    }
    .form-control {
        font-size: 0.875rem;
        padding: 0.5rem 0.75rem;
    }
    .input-group-text {
        padding: 0.5rem 0.75rem;
    }
    .btn-primary {
        padding: 0.625rem 1.5rem;
        font-size: 0.875rem;
    }
    .form-group {
        margin-bottom: 1rem;
    }
    body.bg-default {
        padding: 0.5rem;
    }
    #footer-main {
        padding: 0.5rem 0.75rem;
    }
    #footer-main .copyright {
        font-size: 0.6875rem;
    }
}
@media (max-height: 700px) {
    .login-card .card-body {
        padding: 1.5rem 1.5rem 1.25rem;
    }
    .login-card .card-header {
        padding: 1rem 1.5rem 0.875rem;
    }
    .form-group {
        margin-bottom: 1rem;
    }
}
@media (max-height: 600px) {
    .login-card .card-body {
        padding: 1.25rem 1.5rem 1rem;
    }
    .login-card .card-header {
        padding: 0.875rem 1.5rem 0.75rem;
    }
    .login-card .card-header .welcome-text {
        font-size: 1rem;
    }
    .login-card .card-header .brand-text {
        font-size: 0.75rem;
        margin-top: 0.125rem;
    }
    .form-group {
        margin-bottom: 0.875rem;
    }
    .custom-checkbox {
        margin-bottom: 0.75rem;
    }
}
@media (orientation: landscape) and (max-height: 500px) {
    html, body {
        overflow: auto;
    }
    body.bg-default {
        padding: 0.5rem;
    }
    .login-card .card-body {
        padding: 1rem 1.5rem 0.875rem;
    }
    .login-card .card-header {
        padding: 0.75rem 1.5rem 0.625rem;
    }
    .form-group {
        margin-bottom: 0.75rem;
    }
}