/* General Body & Theme Variables */
:root {
    --primary-color: #0d6efd;
    --background-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #212529;
    --border-color: #dee2e6;
    --muted-text-color: #6c757d;
    --hero-gradient: linear-gradient(45deg, #0d6efd, #6c757d);
    --navbar-bg: #343a40;
}

[data-theme="dark"] {
    --primary-color: #4dabf7;
    --background-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e9ecef;
    --border-color: #495057;
    --muted-text-color: #adb5bd;
    --hero-gradient: linear-gradient(45deg, #1f3a93, #343a40);
    --navbar-bg: #1e1e1e;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}


/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animated {
    animation-duration: 0.8s;
    animation-fill-mode: both;
    animation-name: fadeInUp;
}

/* Navbar */
.navbar {
    background-color: var(--navbar-bg) !important;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

/* Theme Switcher */
.theme-switcher {
    display: flex;
    align-items: center;
}

.theme-switcher .form-check-input {
    width: 40px;
    height: 20px;
    background-color: #555;
    border: none;
    cursor: pointer;
    position: relative;
    transition: background-color 0.3s ease;
}

.theme-switcher .form-check-input:checked {
    background-color: var(--primary-color);
}

.theme-switcher .theme-icon {
    margin-left: 8px;
    color: #ffc107;
    transition: color 0.3s ease;
}


/* Hero Section */
.hero {
    background: var(--hero-gradient);
    color: white;
    padding: 4rem 2rem;
    margin-bottom: 2rem;
    border-radius: 0.5rem;
    text-align: center;
    animation-delay: 0.2s;
}

/* Card Styling */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    animation-delay: 0.4s;
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
}

.card-header h5 {
    color: var(--text-color);
}

.form-label {
    color: var(--muted-text-color);
}

.form-control {
    background-color: var(--background-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.form-control:focus {
    background-color: var(--background-color);
    color: var(--text-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(var(--primary-color), 0.25);
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Result Card */
#result-card {
    transition: opacity 0.5s ease-in-out, transform 0.5s ease;
    border-width: 2px;
}

.result-good {
    color: #28a745;
}

.result-bad {
    color: #dc3545;
}

#result-card.result-good {
    border-color: #28a745;
}

#result-card.result-bad {
    border-color: #dc3545;
}

.result-value {
    font-size: 2.5rem;
    font-weight: bold;
}

/* Footer */
footer {
    color: var(--muted-text-color);
}