/* Dropdown arrow styling */
.dropdown-with-arrow {
    position: relative;
    display: flex;
    align-items: center;
}

.dropdown-with-arrow select {
    width: 100%;
    padding-right: 2.5em;
}

.dropdown-arrow {
    position: absolute;
    right: 1em;
    pointer-events: none;
    font-size: 1.5em;
    color: #888;
}

/* Google AdSense Sidebar Styling */
.ad-sidebar {
    position: sticky;
    top: 20px;
    height: fit-content;
}

.ad-unit {
    min-height: 250px;
    border: 1px solid #444;
    border-radius: 8px;
    background-color: #1a1a1a;
    padding: 10px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive adjustments for mobile */
@media (max-width: 991.98px) {
    .ad-sidebar {
        position: static;
        margin-top: 2rem;
    }
    
    .ad-unit {
        min-height: 100px;
        margin-bottom: 1rem;
    }
}
/* Custom styles for the dual-pane calculator */

body {
    background: var(--bs-body-bg);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.calculator-pane {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.card-header {
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.operation-form {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-control:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.25);
    transform: scale(1.02);
    transition: all 0.2s ease-in-out;
}

.form-select:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.25);
}

.btn {
    transition: all 0.2s ease-in-out;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.result-display {
    animation: slideIn 0.4s ease-out;
    border-left: 4px solid var(--bs-success);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-danger {
    border-left: 4px solid var(--bs-danger);
    animation: shake 0.5s ease-in-out;
}

.alert-success {
    --bs-alert-color: black;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Responsive adjustments */
@media (max-width: 991.98px) {
    .calculator-pane {
        margin-bottom: 1.5rem;
    }

    .display-4 {
        font-size: 2rem;
    }

    .card-title {
        font-size: 1.1rem;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .form-control-lg, .form-select-lg {
        font-size: 1rem;
        padding: 0.75rem;
    }

    .btn-lg {
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
}

/* Loading states */
.form-control.loading {
    background-image: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Enhanced visual feedback */
.card-body {
    position: relative;
    overflow: hidden;
}

.card-body::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    height: 2px;
    background: linear-gradient(90deg, var(--bs-primary), var(--bs-success), var(--bs-primary));
    background-size: 200% 100%;
    animation: borderGlow 3s ease-in-out infinite;
    opacity: 0.3;
}

@keyframes borderGlow {
    0%, 100% { background-position: -200% 0; }
    50% { background-position: 200% 0; }
}

/* Improved accessibility */
.form-label {
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.form-control, .form-select {
    border-width: 2px;
}

/* Hide number input spinners/arrows */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}

/* Dark mode enhancements */
[data-bs-theme="dark"] .calculator-pane {
    background: var(--bs-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: var(--bs-gray-800);
    border-color: var(--bs-gray-600);
    color: var(--bs-light);
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
    background-color: var(--bs-gray-700);
    border-color: var(--bs-primary);
}