/* Form Controls */
.calc-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 28px;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

.input-currency-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-symbol {
    position: absolute;
    left: 14px;
    color: var(--color-muted);
    font-weight: 700;
    font-size: 1rem;
    pointer-events: none;
}

.input-currency-wrapper .form-input {
    padding-left: 28px;
}

/* Frequency / Method Pills */
.method-pills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 8px;
}

.method-pill {
    cursor: pointer;
    text-align: center;
}

.method-pill input {
    display: none;
}

.pill-label {
    display: block;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-muted);
    background: #ffffff;
    transition: all 0.15s ease;
}

.method-pill input:checked + .pill-label {
    background: #0f172a;
    color: #ffffff;
    border-color: #0f172a;
}

/* Result Card */
.result-card {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #ffffff;
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.25);
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.result-badge {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.result-main-amount {
    text-align: center;
    padding: 16px 0 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 24px;
}

.amount-label {
    font-size: 0.88rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.amount-val {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff, #a7f3d0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.amount-subtitle {
    font-size: 0.88rem;
    color: #94a3b8;
    margin-top: 4px;
}

.breakdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.breakdown-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
}

.breakdown-label {
    display: block;
    font-size: 0.78rem;
    color: #94a3b8;
    margin-bottom: 4px;
}

.breakdown-val {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
}

/* Calendar Visualizer */
.calendar-visualizer-container {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    padding: 18px;
    margin-bottom: 24px;
}

.cal-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.cal-month-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: #ffffff;
}

.cal-legend {
    display: flex;
    gap: 12px;
    font-size: 0.75rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
    color: #cbd5e1;
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 2px;
}

.legend-dot.paid {
    background: #10b981;
}

.legend-dot.unpaid {
    background: #334155;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: #64748b;
    margin-bottom: 6px;
    text-transform: uppercase;
}

.calendar-days-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.cal-day-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    position: relative;
    user-select: none;
}

.cal-day-cell.empty {
    background: transparent;
}

.cal-day-cell.paid {
    background: rgba(16, 185, 129, 0.25);
    border: 1px solid rgba(16, 185, 129, 0.5);
    color: #6ee7b7;
}

.cal-day-cell.unpaid {
    background: rgba(51, 65, 85, 0.3);
    border: 1px solid rgba(51, 65, 85, 0.4);
    color: #64748b;
}

/* Modal Overlay & Voucher Receipt */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(4px);
}

.modal-overlay.is-visible {
    display: flex;
}

.voucher-modal {
    background: #ffffff;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 680px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    position: relative;
}

.voucher-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 28px;
    border-bottom: 1px solid var(--color-border);
}

.modal-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-muted);
    cursor: pointer;
    line-height: 1;
}

.voucher-modal-body {
    padding: 28px;
}

.voucher-printable-content {
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-sm);
    padding: 24px;
    background: #ffffff;
}

.voucher-header {
    text-align: center;
    border-bottom: 2px solid #0f172a;
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.voucher-title {
    font-size: 1.3rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #0f172a;
}

.voucher-subtitle {
    font-size: 0.85rem;
    color: var(--color-muted);
}

.voucher-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.92rem;
}

.voucher-row.total {
    border-top: 2px solid #0f172a;
    border-bottom: none;
    margin-top: 10px;
    padding-top: 12px;
    font-weight: 800;
    font-size: 1.15rem;
    color: #0f172a;
}

.voucher-signatures {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
    padding-top: 20px;
}

.sig-line {
    border-top: 1px solid #94a3b8;
    padding-top: 6px;
    font-size: 0.82rem;
    color: var(--color-muted);
    text-align: center;
}

.voucher-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    justify-content: flex-end;
}

@media (max-width: 640px) {
    .form-row-2, .form-row-3 {
        grid-template-columns: 1fr;
    }
    .amount-val {
        font-size: 2.2rem;
    }
    .breakdown-grid {
        grid-template-columns: 1fr;
    }
    .voucher-signatures {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}
@media (max-width: 480px) {
    .calc-form {
        gap: 14px;
        margin-bottom: 20px;
    }
    .method-pills {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }
    .pill-label {
        padding: 8px 4px;
        font-size: 0.76rem;
        white-space: normal;
        text-align: center;
        line-height: 1.2;
    }
    .result-card {
        padding: 18px 12px;
        border-radius: var(--radius-md);
    }
    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 14px;
    }
    .result-main-amount {
        padding: 10px 0 16px 0;
        margin-bottom: 16px;
    }
    .amount-val {
        font-size: 2.1rem;
    }
    .breakdown-grid {
        grid-template-columns: 1fr;
        gap: 10px;
        margin-bottom: 16px;
    }
    .breakdown-item {
        padding: 10px 12px;
    }
    .calendar-visualizer-container {
        padding: 12px 8px;
        margin-bottom: 16px;
    }
    .cal-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        margin-bottom: 10px;
    }
    .cal-month-title {
        font-size: 0.88rem;
    }
    .cal-legend {
        gap: 8px;
        font-size: 0.7rem;
    }
    .calendar-weekdays {
        font-size: 0.65rem;
        gap: 2px;
    }
    .calendar-days-grid {
        gap: 2px;
    }
    .cal-day-cell {
        font-size: 0.72rem;
        border-radius: 2px;
    }
}