:root {
    --neon-green: #39ff14;
    --carbon-black: #1a1a1a;
    --vibrant-purple: #9b30ff;
    --bg-light: #f8f9fa;
    --border-width: 2px;
}

html, body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-light);
    color: var(--carbon-black);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -1px;
}

/* Sharp Corners & Bold Borders */
.card, .btn, .form-control, .input-group-text, .list-group-item, .alert, .badge {
    border-radius: 0 !important;
    border: var(--border-width) solid #000 !important;
}

/* Sharp Shadows */
.sharp-shadow {
    box-shadow: 6px 6px 0px #000;
}

.card {
    box-shadow: 4px 4px 0px #000;
    margin-bottom: 1.5rem;
}

/* Primary Button Styling (Neon Green) */
.btn-primary {
    background-color: var(--neon-green) !important;
    color: #000 !important;
    font-weight: 700;
    text-transform: uppercase;
    transition: transform 0.1s;
}

.btn-primary:hover {
    transform: translate(-2px, -2px);
    box-shadow: 4px 4px 0px #000;
}

.btn-primary:active {
    transform: translate(2px, 2px);
    box-shadow: none;
}

/* Secondary/Info Button (Purple) */
.btn-info {
    background-color: var(--vibrant-purple) !important;
    border-color: #000 !important;
    color: #fff !important;
    font-weight: 700;
}

/* Availability Selection (Checked state) */
.btn-check:checked + .btn-outline-primary {
    background-color: var(--neon-green) !important;
    color: #000 !important;
    border-color: #000 !important;
    font-weight: 900;
    transform: scale(1.05);
    z-index: 2;
}

/* Unchecked state */
.btn-outline-primary {
    background-color: #fff !important;
    color: #000 !important;
    border-color: #000 !important;
    font-weight: 500;
}

.btn-outline-primary:hover {
    background-color: #eee !important;
    color: #000 !important;
}

.btn-success {
    background-color: var(--neon-green) !important;
    color: #000 !important;
    font-weight: 700;
}

/* Form Inputs */
.form-control:focus {
    box-shadow: 4px 4px 0px var(--neon-green);
    border-color: #000;
    outline: none;
}

/* Layout Adjustments */
.navbar-brand {
    font-weight: 900;
    letter-spacing: -2px;
    font-size: 1.5rem;
    color: var(--neon-green) !important;
}

.card-header {
    border-bottom: var(--border-width) solid #000 !important;
    font-weight: 700;
}

.bg-primary { background-color: var(--neon-green) !important; color: #000 !important; }
.bg-success { background-color: var(--neon-green) !important; color: #000 !important; }
.bg-info { background-color: var(--vibrant-purple) !important; color: #fff !important; }
.bg-warning { background-color: #ffea00 !important; color: #000 !important; }

.text-primary, .text-info { color: #000 !important; font-weight: 700; }