body {
    background-color: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Footer Styling */
.footer {
    margin-top: auto;
    background-color: transparent;
    transition: color 0.3s ease;
    font-size: 0.9rem;
    padding: 15px 0;
}

[data-bs-theme="dark"] .footer {
    background-color: transparent;
    color: #f8f9fa;
    border-top: none;
}

/* Styling untuk loading spinner */
.loading-overlay {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-overlay.d-none {
    opacity: 0;
    visibility: hidden;
}

/* Tema Gelap */
[data-bs-theme="dark"] body {
    background-color: #1a1a2e;
    background-image: url('https://picsum.photos/1024');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-blend-mode: multiply;
    color: #f8f9fa;
}

[data-bs-theme="dark"] .card {
    background-color: rgba(26, 26, 46, 0.85);
    backdrop-filter: blur(5px);
    border-color: #5D7AB5;
}

[data-bs-theme="dark"] .card-body {
    background-color: transparent;
    color: #f8f9fa;
}

[data-bs-theme="dark"] .form-control {
    background-color: rgba(93, 122, 181, 0.2);
    border-color: #5D7AB5;
    color: #f8f9fa;
}

[data-bs-theme="dark"] .form-floating label {
    color: #EBCDA7;
}

[data-bs-theme="dark"] .alert-primary {
    background-color: rgba(93, 122, 181, 0.7);
    color: #fff;
    border-color: #5D7AB5;
}

/* Toggle Switch Tema */
.theme-toggle {
    z-index: 100;
}

.form-check-input {
    cursor: pointer;
    width: 3rem;
    height: 1.5rem;
}

.form-check-input:checked {
    background-color: #5D7AB5;
    border-color: #5D7AB5;
}

.form-check-label {
    cursor: pointer;
    padding-left: 0.5rem;
}

.light-icon, .dark-icon {
    font-size: 1.2rem;
    position: relative;
    top: 2px;
}

.light-icon {
    color: #EBCDA7;
    margin-right: 0.5rem;
}

.dark-icon {
    color: #5D7AB5;
}

[data-bs-theme="dark"] .light-icon {
    display: none;
}

[data-bs-theme="light"] .dark-icon {
    display: none;
}

.card {
    border-radius: 15px;
    overflow: hidden;
    transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease-in-out;
    border-color: #DFABCF;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(223, 171, 207, 0.3);
}

.card-header {
    background: linear-gradient(to right, #DFABCF, #5D7AB5);
}

.btn-primary {
    background: linear-gradient(to right, #DFABCF, #5D7AB5);
    border: none;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(to right, #5D7AB5, #DFABCF);
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(to right, #8FD2E6, #5D7AB5);
    border: none;
    transition: all 0.3s ease;
}

.btn-success:hover {
    background: linear-gradient(to right, #5D7AB5, #8FD2E6);
    transform: translateY(-2px);
}

.btn-info {
    background: linear-gradient(to right, #F1CCE1, #DFABCF);
    color: #1a1a2e;
    border: none;
    transition: all 0.3s ease;
}

.btn-info:hover {
    background: linear-gradient(to right, #DFABCF, #F1CCE1);
    color: #1a1a2e;
    transform: translateY(-2px);
}

.form-control:focus {
    border-color: #DFABCF;
    box-shadow: 0 0 0 0.25rem rgba(223, 171, 207, 0.25);
}

#result {
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: #5D7AB5;
}

[data-bs-theme="dark"] #result {
    color: #EBCDA7;
}

.alert-primary {
    background-color: #8FD2E6;
    border-color: #5D7AB5;
    color: #1a1a2e;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(143, 210, 230, 0.4);
    }
    70% {
        box-shadow: 0 0 0 5px rgba(143, 210, 230, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(143, 210, 230, 0);
    }
}

/* Efek hover pada tombol */
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

/* Efek ketika tombol ditekan */
.btn:active {
    transform: translateY(0);
}

/* Styling untuk input */
.form-floating input {
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

.form-floating label {
    color: #5D7AB5;
}

.is-invalid {
    border-color: #dc3545 !important;
    background-image: none !important;
}

/* Alert Warning Styling */
.alert-warning {
    background-color: #EBCDA7;
    border-color: #DFABCF;
    color: #1a1a2e;
}

/* Responsif untuk layar kecil */
@media (max-width: 767.98px) {
    .container {
        padding: 10px;
        max-width: 100%;
    }
    
    .btn {
        margin-bottom: 10px;
    }
    
    .card {
        margin-top: 0;
    }
    
    .form-floating {
        margin-bottom: 15px;
    }
    
    .d-flex {
        flex-wrap: wrap;
    }
    
    .btn-info {
        flex: 1 0 40%;
        margin: 5px;
    }
    
    [data-bs-theme="dark"] body {
        background-attachment: scroll;
    }
}

/* Untuk layar sangat kecil */
@media (max-width: 575.98px) {
    .card-header h2 {
        font-size: 1.5rem;
    }
    
    .btn-info {
        flex: 1 0 40%;
    }
    
    .alert-primary h5 {
        font-size: 1rem;
    }
}