/* Calculator Modal */
.calc-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.calc-card {
    width: 300px;
    background: var(--card);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border);
}

.calc-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-weight: bold;
}

.calc-header button {
    background: none;
    border: none;
    color: var(--red);
    cursor: pointer;
}

.calc-top {
    font-size: 0.9rem;
    margin-bottom: 10px;
    color: var(--text-light);
}

.calc-display {
    width: 100%;
    height: 50px;
    background: #111827;
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 12px;
    padding: 8px;
    font-size: 1.3rem;
    text-align: right;
    color: var(--text);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.calc-grid button,
.qr-card button {
    padding: 16px;
    border-radius: 10px;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    background: #1f2937;
    color: var(--text);
}

.calc-grid button:hover {
    background: #334155;
}

.calc-grid .clear {
    background: var(--red);
}

.calc-grid .equal,
.qr-card .equal {
    background: var(--green);
    color: black;
    font-weight: bold;
}


.qr-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.qr-card {
    width: 320px;
    background: var(--card);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border);
    text-align: center;
}

.qr-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    font-weight: bold;
}

.qr-header button {
    background: none;
    border: none;
    color: var(--red);
    cursor: pointer;
    font-size: 1.2rem;
}

.qr-box {
    background: white;
    padding: 12px;
    border-radius: 12px;
    display: inline-block;
}

.qr-text {
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--text-light);
    word-break: break-all;
}