/* ═══════════════════════════════════════════════════════════════════════════
 * simple-interest.css
 * Scoped under .si-calc__ namespace to prevent conflicts site-wide.
 * Uses the CalculatorFix brand color variables from :root.
 * ═══════════════════════════════════════════════════════════════════════════ */

/* ── Widget Card Override (inherits .calc-widget-card from site CSS) ─────── */
#si-calculator-container {
    padding: 0;
    overflow: hidden;
}

/* ═══════════════════════════════════════
   CALCULATOR SHELL
═══════════════════════════════════════ */
.si-calc {
    padding: 1.5rem 1.75rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.si-calc__heading {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--clr-text-primary, #0f172a);
    margin: 0;
    letter-spacing: -0.01em;
}

/* ═══════════════════════════════════════
   SOLVE-FOR TOGGLE BAR
═══════════════════════════════════════ */
.si-calc__solve-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.625rem;
    background: var(--clr-bg-soft, #f8fafc);
    border: 1px solid var(--clr-border, #e2e8f0);
    border-radius: 10px;
    padding: 0.625rem 0.875rem;
}

.si-calc__solve-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--clr-text-secondary, #475569);
    white-space: nowrap;
    flex-shrink: 0;
}

.si-calc__solve-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.si-calc__solve-tab {
    font-size: 0.775rem;
    font-weight: 600;
    color: var(--clr-text-secondary, #475569);
    background: var(--clr-bg, #ffffff);
    border: 1.5px solid var(--clr-border, #e2e8f0);
    border-radius: 6px;
    padding: 0.3rem 0.75rem;
    cursor: pointer;
    transition: color 0.15s, background 0.15s, border-color 0.15s, box-shadow 0.15s;
    white-space: nowrap;
    line-height: 1.4;
}

.si-calc__solve-tab:hover {
    color: var(--clr-accent-dark, #0369a1);
    border-color: var(--clr-accent, #0ea5e9);
    background: var(--clr-accent-light, #e0f2fe);
}

.si-calc__solve-tab--active,
.si-calc__solve-tab[aria-pressed="true"] {
    color: #ffffff;
    background: var(--clr-accent, #0ea5e9);
    border-color: var(--clr-accent, #0ea5e9);
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.25);
}

/* ═══════════════════════════════════════
   INPUT GRID
═══════════════════════════════════════ */
.si-calc__inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 1.25rem;
}

.si-calc__field {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.si-calc__field--hidden {
    display: none;
}

.si-calc__field--unit {
    /* Time unit selector occupies same grid position as other fields */
}

.si-calc__label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--clr-text-primary, #0f172a);
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    margin: 0;
    cursor: default;
}

.si-calc__hint {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--clr-text-muted, #94a3b8);
    font-style: normal;
}

.si-calc__input-wrap {
    display: flex;
    align-items: center;
    background: var(--clr-bg, #ffffff);
    border: 1.5px solid var(--clr-border, #e2e8f0);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.si-calc__input-wrap:focus-within {
    border-color: var(--clr-accent, #0ea5e9);
    box-shadow: var(--shadow-focus, 0 0 0 4px rgba(14, 165, 233, 0.15));
}

.si-calc__prefix,
.si-calc__suffix {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--clr-text-muted, #94a3b8);
    padding: 0 0.55rem;
    background: var(--clr-bg-muted, #f1f5f9);
    align-self: stretch;
    display: flex;
    align-items: center;
    border-right: 1px solid var(--clr-border, #e2e8f0);
    flex-shrink: 0;
    user-select: none;
}

.si-calc__suffix {
    border-right: none;
    border-left: 1px solid var(--clr-border, #e2e8f0);
}

.si-calc__input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--clr-text-primary, #0f172a);
    padding: 0.55rem 0.625rem;
    -moz-appearance: textfield;
}

.si-calc__input::-webkit-outer-spin-button,
.si-calc__input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.si-calc__input::placeholder {
    color: var(--clr-text-muted, #94a3b8);
    font-weight: 400;
}

/* Disabled input styling (solved-for variable) */
.si-calc__input:disabled {
    background: var(--clr-bg-muted, #f1f5f9);
    color: var(--clr-text-muted, #94a3b8);
    cursor: not-allowed;
}

/* Select dropdown */
.si-calc__unit-select-wrap {
    position: relative;
}

.si-calc__select {
    width: 100%;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--clr-text-primary, #0f172a);
    background: var(--clr-bg, #ffffff);
    border: 1.5px solid var(--clr-border, #e2e8f0);
    border-radius: 8px;
    padding: 0.55rem 2rem 0.55rem 0.75rem;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    outline: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 12 12' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M2.5 4.5L6 8l3.5-3.5' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.625rem center;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.si-calc__select:focus {
    border-color: var(--clr-accent, #0ea5e9);
    box-shadow: var(--shadow-focus, 0 0 0 4px rgba(14, 165, 233, 0.15));
}

.si-calc__desc {
    font-size: 0.72rem;
    color: var(--clr-text-muted, #94a3b8);
    line-height: 1.4;
    margin: 0;
}

/* ═══════════════════════════════════════
   ACTION BUTTONS
═══════════════════════════════════════ */
.si-calc__actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.si-calc__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 8px;
    padding: 0.65rem 1.375rem;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, transform 0.1s;
    white-space: nowrap;
}

.si-calc__btn:active {
    transform: translateY(1px);
}

.si-calc__btn--primary {
    background: var(--clr-accent, #0ea5e9);
    color: #ffffff;
    border-color: var(--clr-accent, #0ea5e9);
}

.si-calc__btn--primary:hover {
    background: var(--clr-accent-dark, #0369a1);
    border-color: var(--clr-accent-dark, #0369a1);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.si-calc__btn--secondary {
    background: var(--clr-bg, #ffffff);
    color: var(--clr-text-secondary, #475569);
    border-color: var(--clr-border, #e2e8f0);
}

.si-calc__btn--secondary:hover {
    background: var(--clr-bg-soft, #f8fafc);
    border-color: var(--clr-text-muted, #94a3b8);
    color: var(--clr-text-primary, #0f172a);
}

/* ═══════════════════════════════════════
   ERROR MESSAGE
═══════════════════════════════════════ */
.si-calc__error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    font-size: 0.82rem;
    font-weight: 500;
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.si-calc__error::before {
    content: '⚠';
    flex-shrink: 0;
}

/* ═══════════════════════════════════════
   RESULTS PANEL
═══════════════════════════════════════ */
.si-calc__results {
    display: flex;
    flex-direction: column;
    gap: 1.125rem;
    border-top: 1.5px solid var(--clr-border-soft, #f1f5f9);
    padding-top: 1.25rem;
    animation: si-fade-in 0.3s ease;
}

@keyframes si-fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Primary result */
.si-calc__result-primary {
    background: linear-gradient(135deg, var(--clr-accent, #0ea5e9) 0%, var(--clr-accent-dark, #0369a1) 100%);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.si-calc__result-primary-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.si-calc__result-primary-value {
    font-size: 2rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

/* Result cards grid */
.si-calc__result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.625rem;
}

.si-calc__result-card {
    background: var(--clr-bg-soft, #f8fafc);
    border: 1px solid var(--clr-border, #e2e8f0);
    border-radius: 8px;
    padding: 0.75rem 0.875rem;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.si-calc__result-card-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--clr-text-muted, #94a3b8);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.si-calc__result-card-value {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--clr-text-primary, #0f172a);
    letter-spacing: -0.01em;
    line-height: 1.2;
    word-break: break-word;
}

.si-calc__result-card-sub {
    font-size: 0.7rem;
    color: var(--clr-text-muted, #94a3b8);
    margin-top: 0.1rem;
}

/* ═══════════════════════════════════════
   BREAKDOWN BAR
═══════════════════════════════════════ */
.si-calc__breakdown {
    background: var(--clr-bg-soft, #f8fafc);
    border: 1px solid var(--clr-border, #e2e8f0);
    border-radius: 10px;
    padding: 0.875rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.si-calc__breakdown-title {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--clr-text-secondary, #475569);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.si-calc__breakdown-bar {
    display: flex;
    height: 10px;
    border-radius: 99px;
    overflow: hidden;
    background: var(--clr-bg-muted, #f1f5f9);
}

.si-calc__bar-principal {
    background: var(--clr-accent, #0ea5e9);
    border-radius: 99px 0 0 99px;
    transition: width 0.4s ease;
    height: 100%;
}

.si-calc__bar-interest {
    background: var(--clr-interest, #fbbf24);
    border-radius: 0 99px 99px 0;
    transition: width 0.4s ease;
    height: 100%;
}

.si-calc__breakdown-legend {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.si-calc__legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.775rem;
    font-weight: 500;
    color: var(--clr-text-secondary, #475569);
}

.si-calc__legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.si-calc__legend-item--principal .si-calc__legend-dot {
    background: var(--clr-accent, #0ea5e9);
}

.si-calc__legend-item--interest .si-calc__legend-dot {
    background: var(--clr-interest, #fbbf24);
}

/* ═══════════════════════════════════════
   YEAR-BY-YEAR TABLE
═══════════════════════════════════════ */
.si-calc__table-wrap {
    border: 1px solid var(--clr-border, #e2e8f0);
    border-radius: 10px;
    overflow: hidden;
}

.si-calc__table-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--clr-text-secondary, #475569);
    background: var(--clr-bg-soft, #f8fafc);
    padding: 0.75rem 1rem;
    margin: 0;
    border-bottom: 1px solid var(--clr-border, #e2e8f0);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.si-calc__table-title:not(:has(+ .si-calc__table-body-wrap[hidden])) {
    border-bottom: 1px solid var(--clr-border, #e2e8f0);
}

.si-calc__table-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--clr-accent-dark, #0369a1);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 5px;
    transition: background 0.15s;
    text-transform: none;
    letter-spacing: 0;
}

.si-calc__table-toggle:hover {
    background: var(--clr-accent-light, #e0f2fe);
}

.si-calc__chevron {
    transition: transform 0.2s ease;
}

.si-calc__table-toggle[aria-expanded="true"] .si-calc__chevron {
    transform: rotate(180deg);
}

.si-calc__table-body-wrap {
    animation: si-fade-in 0.2s ease;
}

.si-calc__table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.si-calc__table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.825rem;
}

.si-calc__table thead th {
    background: var(--clr-bg-muted, #f1f5f9);
    color: var(--clr-text-secondary, #475569);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.5rem 0.875rem;
    text-align: right;
    border-bottom: 1px solid var(--clr-border, #e2e8f0);
    white-space: nowrap;
}

.si-calc__table thead th:first-child {
    text-align: left;
}

.si-calc__table tbody tr {
    border-bottom: 1px solid var(--clr-border-soft, #f1f5f9);
    transition: background 0.1s;
}

.si-calc__table tbody tr:last-child {
    border-bottom: none;
}

.si-calc__table tbody tr:hover {
    background: var(--clr-accent-light, #e0f2fe);
}

.si-calc__table td {
    padding: 0.525rem 0.875rem;
    color: var(--clr-text-primary, #0f172a);
    text-align: right;
    white-space: nowrap;
}

.si-calc__table td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--clr-text-secondary, #475569);
}

.si-calc__table tbody tr:nth-child(even) {
    background: var(--clr-bg-soft, #f8fafc);
}

.si-calc__table tbody tr:nth-child(even):hover {
    background: var(--clr-accent-light, #e0f2fe);
}

/* Highlight total row */
.si-calc__table tbody tr.si-calc__table-total td {
    font-weight: 700;
    color: var(--clr-accent-dark, #0369a1);
    background: var(--clr-accent-light, #e0f2fe);
    border-top: 1.5px solid var(--clr-accent-hover, #bae6fd);
}

/* ═══════════════════════════════════════
   RESPONSIVE — TABLET
═══════════════════════════════════════ */
@media (max-width: 768px) {
    .si-calc {
        padding: 1.25rem 1.25rem 1.5rem;
        gap: 1rem;
    }

    .si-calc__inputs {
        grid-template-columns: 1fr;
        gap: 0.875rem;
    }

    .si-calc__result-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .si-calc__result-primary-value {
        font-size: 1.65rem;
    }

    .si-calc__solve-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .si-calc__solve-tabs {
        width: 100%;
    }

    .si-calc__solve-tab {
        flex: 1;
        justify-content: center;
        text-align: center;
    }
}

/* ═══════════════════════════════════════
   RESPONSIVE — MOBILE
═══════════════════════════════════════ */
@media (max-width: 480px) {
    .si-calc {
        padding: 1rem 1rem 1.25rem;
    }

    .si-calc__result-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }

    .si-calc__result-card {
        padding: 0.625rem 0.75rem;
    }

    .si-calc__result-card-value {
        font-size: 0.925rem;
    }

    .si-calc__result-primary-value {
        font-size: 1.45rem;
    }

    .si-calc__actions {
        flex-direction: column;
    }

    .si-calc__btn {
        width: 100%;
        justify-content: center;
    }

    .si-calc__solve-tab {
        font-size: 0.72rem;
        padding: 0.275rem 0.5rem;
    }

    .si-calc__table thead th,
    .si-calc__table td {
        padding: 0.45rem 0.625rem;
        font-size: 0.775rem;
    }
}