/**
 * Interest Rate Converter Styles
 *
 * Follows the established design pattern from Bond Duration Calculator
 * Blue color scheme (#2563eb primary, #1e40af dark) - NO purple
 *
 * @package Ryan_OConnell_Theme
 * @since 1.0.0
 */

/* ===========================
   CSS VARIABLES
   =========================== */

:root {
    --irc-primary: #2563eb;
    --irc-primary-dark: #1e40af;
    --irc-primary-light: #3b82f6;
    --irc-primary-rgb: 37, 99, 235;
    --irc-success: #10b981;
    --irc-warning: #f59e0b;
    --irc-danger: #ef4444;
    --irc-gray-50: #f9fafb;
    --irc-gray-100: #f3f4f6;
    --irc-gray-200: #e5e7eb;
    --irc-gray-300: #d1d5db;
    --irc-gray-400: #9ca3af;
    --irc-gray-500: #6b7280;
    --irc-gray-600: #4b5563;
    --irc-gray-700: #374151;
    --irc-gray-800: #1f2937;
    --irc-gray-900: #111827;
    --irc-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --irc-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --irc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --irc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --irc-transition: all 0.3s ease;
}

/* ===========================
   CONTAINER & LAYOUT
   =========================== */

.interest-rate-converter {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--irc-gray-800);
    line-height: 1.6;
}

/* ===========================
   HERO SECTION
   =========================== */

.interest-rate-converter .hero-section {
    background: linear-gradient(135deg, var(--irc-primary) 0%, var(--irc-primary-dark) 100%);
    padding: 60px 0;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
}

.interest-rate-converter .hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.interest-rate-converter .hero-section h1 {
    color: white !important;
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.interest-rate-converter .hero-section .lead {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.interest-rate-converter .hero-section .text-white-50 {
    color: rgba(255, 255, 255, 0.7) !important;
    position: relative;
    z-index: 1;
}

/* ===========================
   BREADCRUMB
   =========================== */

.interest-rate-converter .breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 0;
    font-size: 0.875rem;
}

.interest-rate-converter .breadcrumb-item a {
    color: var(--irc-primary);
    text-decoration: none;
    transition: var(--irc-transition);
}

.interest-rate-converter .breadcrumb-item a:hover {
    color: var(--irc-primary-dark);
    text-decoration: underline;
}

.interest-rate-converter .breadcrumb-item.active {
    color: var(--irc-gray-500);
}

/* ===========================
   CARDS
   =========================== */

.interest-rate-converter .card {
    border: 1px solid var(--irc-gray-200);
    border-radius: 0.75rem;
    box-shadow: var(--irc-shadow);
    transition: var(--irc-transition);
    background: white;
    overflow: hidden;
}

.interest-rate-converter .card:hover {
    box-shadow: var(--irc-shadow-md);
}

.interest-rate-converter .card-header {
    background: var(--irc-gray-50);
    border-bottom: 1px solid var(--irc-gray-200);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.interest-rate-converter .card-header h2,
.interest-rate-converter .card-header h3 {
    margin: 0;
    color: var(--irc-gray-800);
}

.interest-rate-converter .card-header .badge {
    font-size: 0.75rem;
    font-weight: 500;
}

.interest-rate-converter .card-body {
    padding: 1.25rem;
}

/* ===========================
   FORM ELEMENTS
   =========================== */

.interest-rate-converter .form-label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--irc-gray-700);
    margin-bottom: 0.375rem;
}

.interest-rate-converter .form-control,
.interest-rate-converter .form-select {
    border: 2px solid var(--irc-gray-200);
    border-radius: 0.5rem;
    padding: 0.625rem 0.875rem;
    font-size: 1rem;
    transition: var(--irc-transition);
    background-color: white;
}

.interest-rate-converter .form-control-lg {
    font-size: 1.25rem;
    padding: 0.75rem 1rem;
    font-weight: 600;
}

.interest-rate-converter .form-control:focus,
.interest-rate-converter .form-select:focus {
    border-color: var(--irc-primary);
    box-shadow: 0 0 0 4px rgba(var(--irc-primary-rgb), 0.15);
    outline: none;
}

.interest-rate-converter .input-group-text {
    background: var(--irc-gray-100);
    border: 2px solid var(--irc-gray-200);
    border-left: none;
    color: var(--irc-gray-600);
    font-weight: 600;
    font-size: 1.25rem;
}

.interest-rate-converter .input-group .form-control {
    border-right: none;
}

.interest-rate-converter .input-group .form-control:focus {
    border-right: none;
}

.interest-rate-converter .input-group:focus-within .input-group-text {
    border-color: var(--irc-primary);
}

.interest-rate-converter .form-text {
    font-size: 0.8rem;
    color: var(--irc-gray-500);
}

/* ===========================
   TOGGLE BUTTONS (APR/APY, Compound/Simple)
   =========================== */

.interest-rate-converter .btn-group {
    display: flex;
    gap: 0;
}

.interest-rate-converter .btn-check + .btn-outline-primary,
.interest-rate-converter .btn-check + .btn-outline-secondary {
    background: white;
    border: 2px solid var(--irc-gray-200);
    color: var(--irc-gray-700);
    padding: 0.75rem 1rem;
    transition: var(--irc-transition);
    flex: 1;
}

.interest-rate-converter .btn-check + .btn-outline-primary:first-of-type,
.interest-rate-converter .btn-check + .btn-outline-secondary:first-of-type {
    border-radius: 0.5rem 0 0 0.5rem;
}

.interest-rate-converter .btn-check + .btn-outline-primary:last-of-type,
.interest-rate-converter .btn-check + .btn-outline-secondary:last-of-type {
    border-radius: 0 0.5rem 0.5rem 0;
}

.interest-rate-converter .btn-check:checked + .btn-outline-primary {
    background: linear-gradient(135deg, var(--irc-primary) 0%, var(--irc-primary-dark) 100%);
    border-color: var(--irc-primary);
    color: white;
}

.interest-rate-converter .btn-check:checked + .btn-outline-secondary {
    background: var(--irc-gray-700);
    border-color: var(--irc-gray-700);
    color: white;
}

.interest-rate-converter .btn-check + .btn small {
    display: block;
    font-size: 0.75rem;
    opacity: 0.8;
    margin-top: 0.25rem;
    font-weight: 400;
}

/* ===========================
   CONVERSION RESULT CARD
   =========================== */

.interest-rate-converter .conversion-result-card {
    background: linear-gradient(135deg, rgba(var(--irc-primary-rgb), 0.03) 0%, white 100%);
    border-color: rgba(var(--irc-primary-rgb), 0.2);
}

.interest-rate-converter .conversion-result-card .card-header {
    background: transparent;
    border-bottom: 1px solid rgba(var(--irc-primary-rgb), 0.1);
}

.interest-rate-converter .conversion-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.interest-rate-converter .conversion-input,
.interest-rate-converter .conversion-output {
    flex: 1;
    text-align: center;
    padding: 0.75rem;
    border-radius: 0.5rem;
}

.interest-rate-converter .conversion-input {
    background: var(--irc-gray-50);
    border: 1px solid var(--irc-gray-200);
}

.interest-rate-converter .conversion-input small,
.interest-rate-converter .conversion-output small {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.interest-rate-converter .conversion-input span {
    font-weight: 600;
    color: var(--irc-gray-700);
    font-size: 1rem;
}

.interest-rate-converter .conversion-output {
    background: linear-gradient(135deg, var(--irc-primary) 0%, var(--irc-primary-dark) 100%);
    border: none;
}

.interest-rate-converter .conversion-output small {
    color: rgba(255, 255, 255, 0.8) !important;
}

.interest-rate-converter .conversion-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    font-family: 'SF Mono', 'Consolas', monospace;
}

.interest-rate-converter .conversion-arrow {
    color: var(--irc-primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* ===========================
   RESULTS TABLE
   =========================== */

.interest-rate-converter .results-table {
    margin-bottom: 0;
}

.interest-rate-converter .results-table thead {
    background: white;
}

.interest-rate-converter .results-table th {
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--irc-gray-600);
    border-bottom: 2px solid var(--irc-gray-200);
    padding: 0.875rem 1rem;
    white-space: nowrap;
}

.interest-rate-converter .results-table td {
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--irc-gray-100);
    vertical-align: middle;
}

.interest-rate-converter .results-table tbody tr {
    transition: var(--irc-transition);
}

.interest-rate-converter .results-table tbody tr:hover {
    background: var(--irc-gray-50);
}

/* Highlighted row (input frequency) */
.interest-rate-converter .results-table tbody tr.highlighted {
    background: linear-gradient(135deg, rgba(var(--irc-primary-rgb), 0.1) 0%, rgba(var(--irc-primary-rgb), 0.05) 100%);
    border-left: 3px solid var(--irc-primary);
}

.interest-rate-converter .results-table tbody tr.highlighted td {
    font-weight: 600;
}

.interest-rate-converter .results-table tbody tr.highlighted .rate-value {
    color: var(--irc-primary);
}

/* Rate values */
.interest-rate-converter .rate-value {
    font-weight: 600;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 1rem;
    color: var(--irc-gray-800);
}

.interest-rate-converter .rate-value.na {
    color: var(--irc-gray-400);
    font-style: italic;
    font-weight: 400;
}

/* Copy button */
.interest-rate-converter .copy-btn {
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    transition: var(--irc-transition);
}

.interest-rate-converter .copy-btn:hover {
    background: var(--irc-primary);
    border-color: var(--irc-primary);
    color: white;
}

.interest-rate-converter .copy-btn.copied {
    background: var(--irc-success);
    border-color: var(--irc-success);
    color: white;
}

/* ===========================
   KEY INSIGHT CARD
   =========================== */

.interest-rate-converter #key-insight {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--irc-gray-700);
}

/* ===========================
   EDUCATIONAL SECTION
   =========================== */

.interest-rate-converter .educational-section {
    background: white;
    border-radius: 0.75rem;
}

.interest-rate-converter .educational-section h2 {
    color: var(--irc-primary-dark);
    font-weight: 700;
}

.interest-rate-converter .educational-section h3 {
    color: var(--irc-gray-800);
    font-weight: 600;
    border-bottom: 2px solid var(--irc-gray-200);
    padding-bottom: 0.5rem;
}

.interest-rate-converter .educational-section p {
    color: var(--irc-gray-600);
    font-size: 1rem;
    line-height: 1.8;
}

.interest-rate-converter .educational-section ul,
.interest-rate-converter .educational-section ol {
    color: var(--irc-gray-600);
    padding-left: 1.5rem;
}

.interest-rate-converter .educational-section li {
    margin-bottom: 0.5rem;
}

.interest-rate-converter .formula-box {
    background: var(--irc-gray-50);
    border: 1px solid var(--irc-gray-200);
    border-radius: 0.5rem;
    padding: 1.25rem;
    margin: 1rem 0;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.95rem;
    overflow-x: auto;
    text-align: center;
}

/* ===========================
   DISCLAIMER
   =========================== */

.interest-rate-converter .disclaimer {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-top: 2rem;
}

.interest-rate-converter .disclaimer h5 {
    color: #92400e;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.interest-rate-converter .disclaimer p {
    color: #78350f;
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* ===========================
   RELATED CALCULATORS
   =========================== */

.interest-rate-converter .related-calc-card {
    display: block;
    background: white;
    border: 2px solid var(--irc-gray-200);
    border-radius: 12px;
    padding: 25px 20px;
    text-decoration: none;
    color: inherit;
    height: 100%;
    transition: var(--irc-transition);
    text-align: center;
}

.interest-rate-converter .related-calc-card:hover {
    border-color: var(--irc-primary);
    box-shadow: var(--irc-shadow-md);
    transform: translateY(-4px);
    text-decoration: none;
    color: inherit;
}

.interest-rate-converter .related-calc-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, var(--irc-primary) 0%, var(--irc-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.interest-rate-converter .related-calc-icon i {
    color: inherit;
}

.interest-rate-converter .related-calc-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--irc-gray-800);
}

.interest-rate-converter .related-calc-desc {
    font-size: 0.9rem;
    color: var(--irc-gray-500);
    margin-bottom: 15px;
    flex-grow: 1;
}

.interest-rate-converter .related-calc-cta {
    display: inline-block;
    background: var(--irc-primary);
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.85rem;
    transition: background 0.3s ease;
}

.interest-rate-converter .related-calc-card:hover .related-calc-cta {
    background: var(--irc-primary-dark);
}

.interest-rate-converter .related-calc-image {
    width: 100%;
    margin-bottom: 15px;
    overflow: hidden;
    border-radius: 8px;
}

.interest-rate-converter .related-calc-image img {
    display: block;
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.interest-rate-converter .related-calc-card:hover .related-calc-image img {
    transform: scale(1.05);
}

/* ===========================
   FAQ SECTION
   =========================== */

.interest-rate-converter .faq-section .card {
    border: none;
    box-shadow: none;
    background: transparent;
}

.interest-rate-converter .faq-section .card-body {
    padding: 0;
}

.interest-rate-converter .faq-section h2 {
    color: var(--irc-gray-800);
    font-weight: 700;
    margin-bottom: 2rem;
}

/* Accordion container */
.interest-rate-converter .faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Individual FAQ items */
.interest-rate-converter .faq-accordion .accordion-item {
    background: white;
    border: 1px solid var(--irc-gray-200);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: var(--irc-transition);
}

.interest-rate-converter .faq-accordion .accordion-item:hover {
    border-color: var(--irc-gray-300);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* Question button */
.interest-rate-converter .faq-accordion .accordion-button {
    background: white;
    color: var(--irc-gray-700);
    font-weight: 600;
    font-size: 1rem;
    padding: 1.25rem 1.5rem;
    border: none;
    box-shadow: none;
    gap: 1rem;
}

.interest-rate-converter .faq-accordion .accordion-button:not(.collapsed) {
    background: white;
    color: var(--irc-primary);
    box-shadow: none;
}

.interest-rate-converter .faq-accordion .accordion-button:hover {
    background: var(--irc-gray-50);
}

.interest-rate-converter .faq-accordion .accordion-button:focus {
    box-shadow: none;
    border-color: transparent;
}

/* Custom chevron icon */
.interest-rate-converter .faq-accordion .accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236b7280'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    width: 1rem;
    height: 1rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.interest-rate-converter .faq-accordion .accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232563eb'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    transform: rotate(-180deg);
}

/* Answer body */
.interest-rate-converter .faq-accordion .accordion-body {
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: var(--irc-gray-600);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* Smooth collapse animation */
.interest-rate-converter .faq-accordion .accordion-collapse {
    transition: height 0.3s ease;
}

/* Active/expanded state */
.interest-rate-converter .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
    border-color: var(--irc-primary);
    box-shadow: 0 0 0 1px var(--irc-primary), 0 4px 12px rgba(37, 99, 235, 0.1);
}

/* Fallback for browsers without :has() */
.interest-rate-converter .faq-accordion .accordion-item.faq-active {
    border-color: var(--irc-primary);
    box-shadow: 0 0 0 1px var(--irc-primary), 0 4px 12px rgba(37, 99, 235, 0.1);
}

/* ===========================
   ACCESSIBILITY
   =========================== */

.interest-rate-converter .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===========================
   ALERTS
   =========================== */

.interest-rate-converter .alert-info {
    background: rgba(var(--irc-primary-rgb), 0.08);
    border: 1px solid rgba(var(--irc-primary-rgb), 0.2);
    color: var(--irc-primary-dark);
    border-radius: 0.5rem;
}

.interest-rate-converter .alert-warning {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: #92400e;
    border-radius: 0.5rem;
}

/* ===========================
   RESPONSIVE STYLES
   =========================== */

@media (max-width: 992px) {
    .interest-rate-converter .hero-section h1 {
        font-size: 2rem;
    }

    .interest-rate-converter .hero-section .lead {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .interest-rate-converter .hero-section {
        padding: 40px 0;
    }

    .interest-rate-converter .hero-section h1 {
        font-size: 1.75rem;
    }

    .interest-rate-converter .btn-group {
        flex-direction: column;
    }

    .interest-rate-converter .btn-check + .btn-outline-primary:first-of-type,
    .interest-rate-converter .btn-check + .btn-outline-secondary:first-of-type {
        border-radius: 0.5rem 0.5rem 0 0;
    }

    .interest-rate-converter .btn-check + .btn-outline-primary:last-of-type,
    .interest-rate-converter .btn-check + .btn-outline-secondary:last-of-type {
        border-radius: 0 0 0.5rem 0.5rem;
    }

    .interest-rate-converter .results-table th,
    .interest-rate-converter .results-table td {
        padding: 0.625rem 0.5rem;
    }

    /* Wrap column headers on mobile for better fit */
    .interest-rate-converter .results-table th {
        font-size: 0.7rem;
        line-height: 1.3;
        white-space: normal;
        word-break: break-word;
    }

    .interest-rate-converter .rate-value {
        font-size: 0.9rem;
    }

    .interest-rate-converter .conversion-display {
        flex-direction: column;
        gap: 0.75rem;
    }

    .interest-rate-converter .conversion-arrow {
        transform: rotate(90deg);
    }

    .interest-rate-converter .conversion-value {
        font-size: 1.25rem;
    }
}

@media (max-width: 576px) {
    .interest-rate-converter .hero-section h1 {
        font-size: 1.5rem;
    }

    .interest-rate-converter .hero-section .lead {
        font-size: 1rem;
    }

    .interest-rate-converter .card-header {
        padding: 0.875rem 1rem;
    }

    .interest-rate-converter .card-body {
        padding: 1rem;
    }

    .interest-rate-converter .form-control-lg {
        font-size: 1.1rem;
    }

    .interest-rate-converter .results-table td:first-child {
        font-size: 0.85rem;
    }

    .interest-rate-converter .results-table .copy-btn {
        padding: 0.2rem 0.4rem;
    }
}

/* ===========================
   PRINT STYLES
   =========================== */

@media print {
    .interest-rate-converter .hero-section {
        background: white !important;
        color: black !important;
        padding: 20px 0;
    }

    .interest-rate-converter .hero-section h1,
    .interest-rate-converter .hero-section .lead {
        color: black !important;
    }

    .interest-rate-converter .card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }

    .interest-rate-converter .copy-btn {
        display: none !important;
    }
}