/* Calculator Gizmo Styles */

/* === DISPLAY === */
.gizmo-calc-display {
    background: var(--header-bg);
    color: var(--header-text);
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 12px;
    text-align: right;
    overflow: hidden;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.gizmo-calc-expression {
    font-size: 0.85rem;
    opacity: 0.7;
    min-height: 1.2em;
    word-break: break-all;
    font-family: 'Courier New', Courier, monospace;
}

.gizmo-calc-result {
    font-size: 1.8rem;
    font-weight: 700;
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.2;
    word-break: break-all;
}

/* === BUTTON GRID === */
.gizmo-calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

.gizmo-calc-grid--sci {
    grid-template-columns: repeat(5, 1fr);
}

/* === BUTTONS === */
.gizmo-calc-btn {
    padding: 12px 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    text-align: center;
    user-select: none;
    line-height: 1.2;
}

.gizmo-calc-btn:hover {
    background: var(--bg-secondary);
    transform: translateY(-1px);
}

.gizmo-calc-btn:active {
    transform: translateY(0);
    opacity: 0.85;
}

.gizmo-calc-btn--operator {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

.gizmo-calc-btn--operator:hover {
    background: var(--accent-secondary);
}

.gizmo-calc-btn--equals {
    background: var(--success);
    color: #fff;
    border-color: var(--success);
}

.gizmo-calc-btn--equals:hover {
    filter: brightness(1.1);
}

.gizmo-calc-btn--clear {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.gizmo-calc-btn--clear:hover {
    filter: brightness(1.1);
}

.gizmo-calc-btn--sci {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    font-size: 0.8rem;
    border-color: var(--border-color);
}

.gizmo-calc-btn--sci:hover {
    background: var(--accent-primary);
    color: #fff;
}

.gizmo-calc-btn--wide {
    grid-column: span 2;
}

/* === MODE TOGGLE === */
.gizmo-calc-modes {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
}

.gizmo-calc-mode-btn {
    flex: 1;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.gizmo-calc-mode-btn--active {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

/* === HISTORY === */
.gizmo-calc-history {
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.gizmo-calc-history__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.gizmo-calc-history__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.gizmo-calc-history__clear {
    padding: 4px 10px;
    font-size: 0.8rem;
    border: 1px solid var(--danger);
    border-radius: 4px;
    background: transparent;
    color: var(--danger);
    cursor: pointer;
    transition: all 0.2s;
}

.gizmo-calc-history__clear:hover {
    background: var(--danger);
    color: #fff;
}

.gizmo-calc-history__list {
    max-height: 250px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.gizmo-calc-history__item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    background: var(--bg-secondary);
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.15s;
}

.gizmo-calc-history__item:hover {
    background: var(--border-color);
}

.gizmo-calc-history__expr {
    color: var(--text-secondary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 8px;
}

.gizmo-calc-history__result {
    color: var(--accent-primary);
    font-weight: 600;
    white-space: nowrap;
}

.gizmo-calc-history__empty {
    color: var(--text-secondary);
    font-style: italic;
    text-align: center;
    padding: 16px;
    font-size: 0.9rem;
}

/* === BACK LINK === */
.gizmo-calc-back {
    display: inline-block;
    margin-bottom: 16px;
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.9rem;
}

.gizmo-calc-back:hover {
    text-decoration: underline;
}

/* === KEYBOARD HINT === */
.gizmo-calc-keyboard-hint {
    margin-top: 12px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* === WIDGET MODE (compact) === */
.gizmo-calc--widget .gizmo-calc-display {
    padding: 8px 12px;
    min-height: 48px;
    margin-bottom: 8px;
}

.gizmo-calc--widget .gizmo-calc-expression {
    font-size: 0.75rem;
}

.gizmo-calc--widget .gizmo-calc-result {
    font-size: 1.4rem;
}

.gizmo-calc--widget .gizmo-calc-grid {
    gap: 4px;
}

.gizmo-calc--widget .gizmo-calc-btn {
    padding: 8px 4px;
    font-size: 0.9rem;
}

/* === FULL MODE (larger) === */
.gizmo-calc--full {
    max-width: 500px;
    margin: 0 auto;
}

.gizmo-calc--full .gizmo-calc-display {
    padding: 16px 20px;
    min-height: 80px;
}

.gizmo-calc--full .gizmo-calc-result {
    font-size: 2.2rem;
}

.gizmo-calc--full .gizmo-calc-btn {
    padding: 16px 10px;
    font-size: 1.1rem;
}

.gizmo-calc--full .gizmo-calc-grid {
    gap: 8px;
}

/* === ERROR STATE === */
.gizmo-calc-result--error {
    color: var(--danger) !important;
    font-size: 1.2rem !important;
}