/* Connect Four */

.cf-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
    user-select: none;
}

.cf-modes {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.cf-mode {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-card-bg);
    color: var(--color-text);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.cf-mode:hover { border-color: var(--color-primary-dark); }
.cf-mode.active {
    background: var(--color-primary);
    border-color: var(--color-primary-dark);
}

.cf-mode:focus-visible,
.cf-btn:focus-visible,
.cf-cell:focus-visible {
    outline: 3px solid var(--color-text);
    outline-offset: 2px;
}

.cf-status {
    font-size: 1.15rem;
    font-weight: 700;
    min-height: 1.5em;
    margin: 0;
    text-align: center;
}

/* The blue frame is the traditional look and makes the empty slots read as
   holes rather than as tiles. */
.cf-board {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    width: min(420px, 92vw);
    aspect-ratio: 7 / 6;
    padding: 8px;
    background: var(--cat-speed);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.cf-cell {
    border: none;
    padding: 0;
    border-radius: 50%;
    background: var(--color-bg);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 120ms ease;
}

.cf-cell.you { background: var(--color-accent); }
.cf-cell.cpu { background: var(--color-primary); }

/* The winning four, and the disc that just landed. */
.cf-cell.win {
    box-shadow: 0 0 0 3px var(--color-text) inset;
}

.cf-cell.last {
    box-shadow: 0 0 0 3px #fff inset;
}

.cf-cell.col-full { cursor: default; }

.state-result .cf-cell { pointer-events: none; }

.cf-score {
    display: flex;
    gap: 1.25rem;
    font-weight: 600;
    color: var(--color-text-light);
    font-variant-numeric: tabular-nums;
    flex-wrap: wrap;
    justify-content: center;
}

.cf-btn {
    padding: 0.75rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: var(--color-text);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.cf-btn:hover { background: var(--color-primary-dark); }