:root {
    --bg-color: #050505;
    /* Deep black */
    --card-bg: rgba(20, 20, 20, 0.8);
    /* Transparent dark */
    --primary-color: #198754;
    /* Bootstrap Success Green */
    --secondary-color: #146c43;
    /* Darker Green */
    --accent-color: #0a3622;
    /* Deep Green */
    --text-color: #e0e6ed;
    --heading-color: #ffffff;
    --border-color: rgba(25, 135, 84, 0.3);
    --glow-color: rgba(25, 135, 84, 0.5);
    --glass-border: rgba(25, 135, 84, 0.2);
    /* Override Bootstrap Success RGB for Opacity utils */
    --bs-success-rgb: 25, 135, 84;
}


a {
    color: #e6fbe4;
    /* Brighter green for readability on dark backgrounds */
    text-decoration: none;
    transition: all 0.2s ease;
}

a:hover {
    color: #20c997;
    /* Lighter green on hover */
    text-decoration: underline;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', 'Roboto', sans-serif;
    /* Prefer Inter if available */
    /* Modern Mesh Gradient Background */
    background: radial-gradient(circle at top left, #0f1c2e, transparent 40%),
        radial-gradient(circle at bottom right, #1a0b1f, transparent 40%),
        var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--heading-color);
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Glassmorphism Card refinement */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 60px var(--glow-color);
    /* Subtle green glow */
}

/* Modern Title - Text Gradient, no background box */
/* Modern Title - Text Gradient, no background box */
.title {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-color) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 5px 20px var(--glow-color);
    border: none !important;
    padding: 0;
    margin-bottom: 1rem;
}

/* Inputs */
.form-control,
.form-select,
.input-group-text {
    background-color: rgba(255, 255, 255, 0.03) !important;
    border: 1px solid var(--border-color) !important;
    color: #fff !important;
    border-radius: 10px;
    padding: 5px !important;
}

/* Fix for Select Dropdown Options on Windows/Browser default */
.form-select option {
    background-color: #0d1117 !important;
    color: #fff !important;
}

.form-select option:hover,
.form-select option:checked,
.form-select option:focus {
    background-color: #1f2937 !important;
    color: var(--primary-color) !important;
}

.form-control:focus,
.form-select:focus {
    box-shadow: 0 0 0 2px var(--primary-color);
    border-color: var(--primary-color) !important;
}

/* Primary Button */
.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border: none;
    font-weight: 600;
    color: #000;
    padding: 12px 24px;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px var(--glow-color);
    color: #fff;
}

/* Footer - Minimal, no background */
footer {
    margin-top: 0;
}

/* Bright Green Text for Badges on Dark Backgrounds */
.text-success-bright {
    color: #a3cfbb !important;
    /* Lighter/Pastel Green */
}

.text-justify {
    text-align: justify;
}

/* Accordion Overrides (Remove Blue) */
.accordion-button:not(.collapsed) {
    color: var(--text-color);
    background-color: rgba(25, 135, 84, 0.2);
    /* Green tint */
    box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .125);
}

.accordion-button:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(25, 135, 84, 0.25);
    /* Green ring */
}

.accordion-button::after {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.accordion-button:not(.collapsed)::after {
    filter: invert(0.5) sepia(1) saturate(5) hue-rotate(100deg);
    /* Make arrow green */
}

/* Nav Pills - Tab Color Overrides */
.nav-pills .nav-link {
    color: var(--text-color);
}

.nav-pills .nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(25, 135, 84, 0.1);
}

.nav-pills .nav-link.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) !important;
    color: #fff !important;
}