:root {
    --bg-color: #121212;
    --panel-bg: #1e1e24;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --accent: #e31837; /* Red */
    --accent-hover: #b9112a;
    --secondary: #19b5b3; /* Teal */
    --secondary-hover: #149391;
    --font-main: 'Roboto', sans-serif;
    --font-display: 'Oswald', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
}

/* Custom Overrides & Bootstrap Helpers */
.small, small {
    font-size: 1.05em !important; /* Increased from Bootstrap's default 0.875em */
}
.text-secondary-custom { color: var(--secondary) !important; }
.text-info { color: var(--secondary) !important; }
.border-start-info { border-left-color: var(--secondary) !important; }

.btn-primary {
    background-color: var(--secondary) !important;
    border-color: var(--secondary) !important;
    color: white !important;
}
.btn-primary:hover, .btn-primary:active {
    background-color: var(--secondary-hover) !important;
    border-color: var(--secondary-hover) !important;
}

.btn-outline-info {
    color: var(--secondary) !important;
    border-color: var(--secondary) !important;
}
.btn-outline-info:hover,
.btn-outline-info.active,
.btn-outline-info:active,
.btn-check:checked + .btn-outline-info {
    background-color: var(--secondary) !important;
    border-color: var(--secondary) !important;
    color: white !important;
}

.custom-card {
    background-color: var(--panel-bg);
}

.nav-tabs .nav-link.active {
    background-color: transparent !important;
    color: var(--secondary) !important;
    border-color: transparent transparent var(--secondary) transparent !important;
    border-bottom-width: 3px !important;
}
.nav-tabs .nav-link {
    color: var(--text-secondary);
    border: none;
    font-weight: 500;
}
.nav-tabs .nav-link:hover {
    color: var(--text-primary);
    border: none;
}

.cursor-pointer {
    cursor: pointer;
}

/* Animations */
.animate-fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Overriding form elements for dark theme depth */
.form-control, .form-select {
    background-color: #2a2a35 !important;
    border-color: #374151 !important;
    color: var(--text-primary) !important;
}
.form-control:focus, .form-select:focus {
    border-color: var(--secondary) !important;
    box-shadow: 0 0 0 0.25rem rgba(25, 181, 179, 0.25) !important;
}

input[type="range"]::-webkit-slider-thumb {
    background: var(--secondary) !important;
}

/* Mobile Responsiveness Tweaks */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2.2rem !important;
    }
    .display-2 {
        font-size: 3rem !important;
    }
    .fs-4 {
        font-size: 1.15rem !important;
    }
    .fs-2 {
        font-size: 1.5rem !important;
    }
}