.calc-panel {
    width: 100%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-section label {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

.currency-input {
    display: flex;
    align-items: center;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.currency-input:focus-within {
    border-color: #10b981;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.2);
}

.currency-input span {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-right: 0.5rem;
}

.currency-input input {
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.8rem;
    width: 100%;
    outline: none;
}

/* Slider */
.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: rgba(255,255,255,0.1);
    outline: none;
    margin: 10px 0;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #10b981;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.quick-tips {
    display: flex;
    gap: 0.5rem;
    justify-content: space-between;
    margin-top: 0.5rem;
}

.quick-tip-btn {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-light);
    padding: 0.5rem 0;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.quick-tip-btn.active, .quick-tip-btn:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: #10b981;
}

.split-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.5rem;
}

.icon-btn {
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: rgba(255,255,255,0.2);
}

#split-count {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    text-align: center;
    outline: none;
}

.results-divider {
    height: 1px;
    background: var(--glass-border);
    margin: 0.5rem 0;
}

.results-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    color: var(--text-muted);
}

.result-row span:last-child {
    color: var(--text-light);
}

.result-row.total, .result-row.per-person {
    font-size: 1.3rem;
    color: var(--text-light);
    font-weight: 500;
}

.result-row.per-person {
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 1px dashed rgba(255,255,255,0.1);
}

.highlight-text {
    color: #10b981 !important;
    font-weight: 700;
}

input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
    -webkit-appearance: none; 
    margin: 0; 
}
input[type=number] {
    -moz-appearance: textfield;
}