/* =========================
   CALCULATORS PAGE
========================= */

.calculators .container {
    max-width: 900px;
    margin: 40px auto;
    padding: 40px;
    box-shadow: 0 20px 50px rgba(0, 63, 127, 0.2);
    border-radius: 16px;
    background: white;
}

.calculators h1 {
    font-size: 2em;
    color: #003f7f;
    margin: 0 0 28px 0;
    text-align: center;
}

/* Hide redundant h2 when viewing a single calculator */
body.single-calc .calc-panel h2 {
    display: none;
}

.calc-tabs {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
}

.calc-tabs-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.calc-tab {
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    background: #e8f4fd;
    color: var(--btn-primary, #003f7f);
    border: 2px solid #b8d4f0;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.calc-tab:hover {
    background: #d0e8f9;
    border-color: var(--btn-primary, #003f7f);
}

.calc-tab.active {
    background: #003f7f;
    color: white;
    border-color: var(--btn-primary-dark, #002d5c);
}

.calc-panel {
    display: none;
    padding: 24px;
    background: #f8fcff;
    border: 2px dashed #b8d4f0;
    border-radius: 16px;
}

.calc-panel.active {
    display: block;
}

.calc-panel h2 {
    font-size: 1.2em;
    color: #003f7f;
    margin: 0 0 16px 0;
}

.calc-group {
    margin-bottom: 16px;
}

.calc-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
}

.calc-group input,
.calc-group select {
    width: 100%;
    max-width: 280px;
    padding: 10px 14px;
    font-size: 1rem;
    border: 2px solid #ddd;
    border-radius: 12px;
    box-sizing: border-box;
}

.calc-group input:focus,
.calc-group select:focus {
    outline: none;
    border-color: var(--btn-primary, #003f7f);
}

.calc-custom-select {
    position: relative;
    width: 100%;
    max-width: 280px;
}

.calc-select-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 280px;
    padding: 10px 14px;
    font-size: 1rem;
    border: 2px solid #ddd;
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.calc-select-trigger:hover {
    border-color: var(--btn-primary, #003f7f);
    background: #f8fcff;
}

.calc-select-trigger::after {
    content: "";
    width: 0;
    height: 0;
    margin-left: 8px;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid #555;
}

.calc-select-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin: 4px 0 0 0;
    padding: 6px 0;
    width: 100%;
    max-width: 280px;
    list-style: none;
    background: white;
    border: 2px solid #ddd;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 63, 127, 0.15);
    z-index: 100;
    display: none;
}

.calc-custom-select.open .calc-select-menu {
    display: block;
}

.calc-select-menu li {
    padding: 10px 14px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.2s;
}

.calc-select-menu li:first-child {
    border-radius: 10px 10px 0 0;
}

.calc-select-menu li:last-child {
    border-radius: 0 0 10px 10px;
}

.calc-select-menu li:hover {
    background: #e8f4fd;
}

.calc-select-menu li.selected {
    background: #d0e8f9;
    font-weight: 600;
}

#panel-currency .calc-select-trigger::after {
    display: none;
}

#panel-currency #curr-amount::-webkit-outer-spin-button,
#panel-currency #curr-amount::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

#panel-currency #curr-amount {
    -moz-appearance: textfield;
    min-width: 160px;
}

.calc-currency-input-wrap {
    display: flex;
    gap: 8px;
    align-items: stretch;
    max-width: 380px;
}

.calc-currency-input-wrap input {
    flex: 1;
    min-width: 160px;
}

.calc-currency-input-wrap .calc-custom-select {
    flex-shrink: 0;
    min-width: 70px;
}

#panel-currency #curr-to-wrap {
    margin-left: 38px;
}

#panel-currency .calc-group-curr-to {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#panel-currency .calc-group-curr-to label {
    text-align: center;
}

.calc-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
    margin-bottom: 12px;
}

#panel-percent .calc-row,
#panel-currency .calc-row,
#panel-loan .calc-row,
#panel-discount .calc-row,
#panel-margin .calc-row,
#panel-split .calc-row {
    align-items: flex-end;
}

#panel-percent .calc-row .calc-group,
#panel-currency .calc-row .calc-group,
#panel-loan .calc-row .calc-group,
#panel-discount .calc-row .calc-group,
#panel-margin .calc-row .calc-group,
#panel-split .calc-row .calc-group {
    margin-bottom: 0;
}

#panel-percent .calc-row .calc-btn,
#panel-currency .calc-row .calc-btn,
#panel-loan .calc-row .calc-btn,
#panel-discount .calc-row .calc-btn,
#panel-margin .calc-row .calc-btn,
#panel-split .calc-row .calc-btn {
    flex-shrink: 0;
    min-height: 44px;
    box-sizing: border-box;
}

.calc-btn {
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    background: #003f7f;
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    min-height: 44px;
    box-sizing: border-box;
}

.calc-btn:hover {
    background: #0056b3;
    transform: scale(1.05);
}

.calc-result {
    margin-top: 16px;
    padding: 16px 20px;
    background: white;
    border-radius: 12px;
    border: 2px solid #d0e8f9;
    font-size: 1.1rem;
    font-weight: 600;
    color: #003f7f;
    display: none;
}

.calc-result.show {
    display: block;
}

.calc-result-note {
    font-size: 0.85rem;
    font-weight: normal;
    color: #666;
    margin-top: 8px;
}

.calc-home {
    margin-top: 28px;
    text-align: center;
}

@media (max-width: 768px) {
    .calculators .container {
        margin: 20px 16px;
        padding: 28px 22px;
    }
    .calc-tab {
        padding: 9px 16px;
        font-size: 0.9rem;
    }
    .calc-group input,
    .calc-group select {
        max-width: 100%;
    }
}

@media (max-width: 600px) {
    .calculators .container {
        margin: 12px 10px;
        padding: 20px 16px;
    }
    .calc-currency-input-wrap {
        flex-direction: column;
        max-width: 100%;
    }
    .calc-currency-input-wrap input {
        min-width: 100%;
    }
    #panel-currency .calc-currency-row {
        flex-direction: column;
    }
    #panel-currency #curr-to-wrap {
        margin-left: 0;
    }
    .calculators h1 {
        font-size: 1.4em;
    }
    .calc-tabs-row {
        gap: 8px;
    }
    .calc-tab {
        padding: 10px 12px;
        font-size: 0.8rem;
        min-height: 44px;
    }
    .calc-panel {
        padding: 18px 14px;
    }
    .calc-panel h2 {
        font-size: 1.1em;
    }
    .calc-row {
        flex-direction: column;
        align-items: stretch;
    }
    .calc-group {
        margin-bottom: 14px;
    }
    .calc-group input,
    .calc-group select,
    .calc-custom-select,
    .calc-select-trigger {
        max-width: 100%;
    }
    #panel-percent .calc-row .calc-btn,
    #panel-currency .calc-row .calc-btn,
    #panel-loan .calc-row .calc-btn,
    #panel-discount .calc-row .calc-btn,
    #panel-margin .calc-row .calc-btn,
    #panel-split .calc-row .calc-btn {
        min-height: 48px;
    }
    .calc-btn {
        min-height: 48px;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .calc-tab {
        font-size: 0.75rem;
        padding: 10px 10px;
    }
}