:root {
    --brand-yellow: #ffe030;
    --brutal-black: #000000;
    --brutal-white: #FFFFFF;
    --brutal-border: 3px;
    --brutal-shadow: 6px;
}

body {
    background-color: #f7f7f7;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--brutal-black);
}

/* Neo-Brutalist Core Components */
.neo-brutal {
    border: var(--brutal-border) solid var(--brutal-black);
    box-shadow: var(--brutal-shadow) var(--brutal-shadow) 0px var(--brutal-black);
    transition: all 0.1s ease;
    background-color: var(--brutal-white);
}

.neo-brutal:active:not([disabled]) {
    box-shadow: 0px 0px 0px var(--brutal-black);
    transform: translate(3px, 3px);
}

.neo-header {
    background-color: var(--brand-yellow);
    border-bottom: var(--brutal-border) solid var(--brutal-black) !important;
    position: sticky;
    top: 0;
    z-index: 50;
}

.neo-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1.25rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    border: var(--brutal-border) solid var(--brutal-black);
    box-shadow: 4px 4px 0px var(--brutal-black);
    transition: all 0.1s;
}

.neo-btn:hover:not([disabled]) {
    transform: translate(-1px, -1px);
    box-shadow: 5px 5px 0px var(--brutal-black);
}

.neo-btn:active:not([disabled]) {
    transform: translate(2px, 2px);
    box-shadow: 0px 0px 0px var(--brutal-black);
}

.neo-btn-primary {
    background-color: var(--brand-yellow);
}

.neo-btn-secondary {
    background-color: #f7f7f7;
}

.neo-btn-white {
    background-color: var(--brutal-white);
}

.neo-card {
    background-color: var(--brutal-white);
    border: var(--brutal-border) solid var(--brutal-black);
    box-shadow: 8px 8px 0px var(--brutal-black);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.neo-badge-student {
    background-color: #3b82f6;
    color: white;
    border: 2px solid var(--brutal-black);
}

.neo-badge-teacher {
    background-color: #a855f7;
    color: white;
    border: 2px solid var(--brutal-black);
}

.option-btn {
    border: var(--brutal-border) solid var(--brutal-black);
    box-shadow: 4px 4px 0px var(--brutal-black);
    background-color: var(--brutal-white);
    transition: all 0.1s;
    font-weight: 700;
}

.option-btn.selected {
    background-color: var(--brand-yellow);
    transform: translate(2px, 2px);
    box-shadow: 0px 0px 0px var(--brutal-black);
}

.progress-dot {
    width: 12px;
    height: 12px;
    border: 2px solid var(--brutal-black);
    background-color: var(--brutal-white);
}

.progress-dot.active {
    background-color: var(--brand-yellow);
    transform: scale(1.2);
}

.progress-dot.answered {
    background-color: var(--brutal-black);
}

.neo-input {
    border: var(--brutal-border) solid var(--brutal-black);
    padding: 0.75rem;
    font-weight: 600;
    width: 100%;
    outline: none;
}

.neo-input:focus {
    background-color: #fffdec;
}

/* Specific component overrides */
.neo-nav-link {
    font-weight: 700;
    text-decoration: none;
    color: var(--brutal-black);
    padding: 0.5rem 1rem;
    border: 2px solid transparent;
}

.neo-nav-link:hover {
    background: var(--brutal-white);
    border: 2px solid var(--brutal-black);
    box-shadow: 3px 3px 0px var(--brutal-black);
}

.neo-badge {
    border: 2px solid var(--brutal-black);
    padding: 0.2rem 0.6rem;
    font-weight: 800;
    font-size: 0.75rem;
    text-transform: uppercase;
    display: inline-block;
}