/**
 * Duration Times Spread (DTS) Calculator Styles
 *
 * Blue color scheme (#2563eb primary, #1e40af dark) - NO purple
 *
 * @package Ryan_OConnell_Theme
 * @since 1.0.0
 */

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

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

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

.duration-times-spread-calculator {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--dtsc-gray-800);
    line-height: 1.6;
}

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

.duration-times-spread-calculator .hero-section {
    background: linear-gradient(135deg, var(--dtsc-primary) 0%, var(--dtsc-primary-dark) 100%);
    padding: 60px 0;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
}

.duration-times-spread-calculator .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;
}

.duration-times-spread-calculator .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;
}

.duration-times-spread-calculator .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;
}

.duration-times-spread-calculator .hero-section .text-white-50 {
    color: rgba(255, 255, 255, 0.7) !important;
    position: relative;
    z-index: 1;
}

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

.duration-times-spread-calculator .breadcrumb {
    background: transparent;
    padding: 0;
    font-size: 0.875rem;
}

.duration-times-spread-calculator .breadcrumb-item a {
    color: var(--dtsc-primary);
    text-decoration: none;
}

.duration-times-spread-calculator .breadcrumb-item a:hover {
    text-decoration: underline;
}

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

.duration-times-spread-calculator .calculator-card {
    border: none;
    border-radius: 12px;
    box-shadow: var(--dtsc-shadow);
    transition: var(--dtsc-transition);
}

.duration-times-spread-calculator .calculator-card:hover {
    box-shadow: var(--dtsc-shadow-md);
}

.duration-times-spread-calculator .calculator-card .card-header {
    background: var(--dtsc-gray-50);
    border-bottom: 1px solid var(--dtsc-gray-200);
    padding: 1rem 1.25rem;
    border-radius: 12px 12px 0 0;
}

.duration-times-spread-calculator .calculator-card .card-header h2,
.duration-times-spread-calculator .calculator-card .card-header h3 {
    color: var(--dtsc-gray-800);
    font-weight: 600;
}

.duration-times-spread-calculator .calculator-card .card-body {
    padding: 1.25rem;
}

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

.duration-times-spread-calculator .form-label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--dtsc-gray-700);
    margin-bottom: 0.375rem;
}

.duration-times-spread-calculator .form-control,
.duration-times-spread-calculator .form-select {
    border-radius: 8px;
    border: 1px solid var(--dtsc-gray-300);
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
    transition: var(--dtsc-transition);
}

.duration-times-spread-calculator .form-control:focus,
.duration-times-spread-calculator .form-select:focus {
    border-color: var(--dtsc-primary);
    box-shadow: 0 0 0 3px rgba(var(--dtsc-primary-rgb), 0.15);
}

.duration-times-spread-calculator .input-group-text {
    background: var(--dtsc-gray-100);
    border-color: var(--dtsc-gray-300);
    font-size: 0.875rem;
    color: var(--dtsc-gray-600);
}

/* ===========================
   PRESET BUTTONS
   =========================== */

.duration-times-spread-calculator .preset-btn {
    background: white;
    border: 1px solid var(--dtsc-gray-300);
    color: var(--dtsc-gray-700);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.8125rem;
    transition: var(--dtsc-transition);
}

.duration-times-spread-calculator .preset-btn:hover {
    background: var(--dtsc-primary);
    border-color: var(--dtsc-primary);
    color: white;
}

.duration-times-spread-calculator .preset-btn i {
    margin-right: 0.375rem;
}

/* ===========================
   METRIC BOXES
   =========================== */

.duration-times-spread-calculator .metric-box {
    background: var(--dtsc-gray-50);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.duration-times-spread-calculator .metric-box.highlight {
    background: linear-gradient(135deg, rgba(var(--dtsc-primary-rgb), 0.08) 0%, rgba(var(--dtsc-primary-rgb), 0.04) 100%);
    border: 1px solid rgba(var(--dtsc-primary-rgb), 0.15);
}

.duration-times-spread-calculator .metric-box small {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.duration-times-spread-calculator .metric-box strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dtsc-primary);
    margin-top: 0.25rem;
}

.duration-times-spread-calculator .metric-box .metric-unit {
    font-size: 0.75rem;
    color: var(--dtsc-gray-500);
}

/* ===========================
   RISK BADGES
   =========================== */

.duration-times-spread-calculator .risk-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.duration-times-spread-calculator .risk-badge.risk-low {
    background: rgba(16, 185, 129, 0.15);
    color: #047857;
}

.duration-times-spread-calculator .risk-badge.risk-moderate {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
}

.duration-times-spread-calculator .risk-badge.risk-high {
    background: rgba(249, 115, 22, 0.15);
    color: #c2410c;
}

.duration-times-spread-calculator .risk-badge.risk-very-high {
    background: rgba(239, 68, 68, 0.15);
    color: #b91c1c;
}

/* ===========================
   INTERPRETATION BOX
   =========================== */

.duration-times-spread-calculator .interpretation-box {
    background: linear-gradient(135deg, rgba(var(--dtsc-primary-rgb), 0.08) 0%, rgba(var(--dtsc-primary-rgb), 0.04) 100%);
    border: 1px solid rgba(var(--dtsc-primary-rgb), 0.15);
    border-radius: 8px;
    padding: 1rem;
    font-size: 0.9375rem;
    color: var(--dtsc-gray-700);
}

.duration-times-spread-calculator .interpretation-box i {
    color: var(--dtsc-primary);
}

/* ===========================
   SENSITIVITY TABLE
   =========================== */

.duration-times-spread-calculator .sensitivity-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.duration-times-spread-calculator .sensitivity-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.625rem 1rem;
    background: var(--dtsc-gray-50);
    border-radius: 6px;
    transition: var(--dtsc-transition);
}

.duration-times-spread-calculator .sensitivity-row:hover {
    background: var(--dtsc-gray-100);
}

.duration-times-spread-calculator .sensitivity-row.current {
    background: linear-gradient(135deg, rgba(var(--dtsc-primary-rgb), 0.1) 0%, rgba(var(--dtsc-primary-rgb), 0.05) 100%);
    border: 1px solid rgba(var(--dtsc-primary-rgb), 0.2);
}

.duration-times-spread-calculator .sensitivity-label {
    font-weight: 500;
    font-size: 0.875rem;
}

.duration-times-spread-calculator .sensitivity-value {
    font-weight: 600;
    font-size: 0.9375rem;
}

.duration-times-spread-calculator .sensitivity-value.positive {
    color: var(--dtsc-success);
}

.duration-times-spread-calculator .sensitivity-value.negative {
    color: var(--dtsc-danger);
}

/* ===========================
   CHART TABS & CONTAINER
   =========================== */

.duration-times-spread-calculator .chart-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.duration-times-spread-calculator .chart-tab {
    flex: 1;
    padding: 0.625rem 1rem;
    background: var(--dtsc-gray-100);
    border: 1px solid var(--dtsc-gray-200);
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--dtsc-gray-600);
    cursor: pointer;
    transition: var(--dtsc-transition);
}

.duration-times-spread-calculator .chart-tab:hover {
    background: var(--dtsc-gray-200);
}

.duration-times-spread-calculator .chart-tab.active {
    background: var(--dtsc-primary);
    border-color: var(--dtsc-primary);
    color: white;
}

.duration-times-spread-calculator .chart-container {
    position: relative;
    height: 280px;
    margin-bottom: 0.75rem;
}

.duration-times-spread-calculator .chart-summary {
    font-size: 0.8125rem;
    color: var(--dtsc-gray-500);
    text-align: center;
}

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

.duration-times-spread-calculator .educational-section {
    border-radius: 12px;
}

.duration-times-spread-calculator .educational-section h2 {
    color: var(--dtsc-primary-dark);
}

.duration-times-spread-calculator .educational-section h3 {
    color: var(--dtsc-gray-800);
    font-weight: 600;
}

.duration-times-spread-calculator .formula-box {
    background: var(--dtsc-gray-50);
    border: 1px solid var(--dtsc-gray-200);
    border-left: 4px solid var(--dtsc-primary);
    padding: 1rem 1.25rem;
    margin: 1rem 0;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.9375rem;
    border-radius: 0 8px 8px 0;
}

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

.duration-times-spread-calculator .faq-accordion .accordion-item {
    border: 1px solid var(--dtsc-gray-200);
    border-radius: 0.5rem !important;
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.duration-times-spread-calculator .faq-accordion .accordion-button {
    background: var(--dtsc-gray-50);
    font-weight: 600;
    color: var(--dtsc-gray-800);
    padding: 1rem 1.25rem;
}

.duration-times-spread-calculator .faq-accordion .accordion-button:not(.collapsed) {
    background: rgba(var(--dtsc-primary-rgb), 0.08);
    color: var(--dtsc-primary-dark);
}

.duration-times-spread-calculator .faq-accordion .accordion-button:focus {
    box-shadow: none;
    border-color: var(--dtsc-primary);
}

.duration-times-spread-calculator .faq-accordion .accordion-body {
    padding: 1rem 1.25rem;
    color: var(--dtsc-gray-600);
    line-height: 1.7;
}

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

.duration-times-spread-calculator .disclaimer {
    background: var(--dtsc-gray-50);
    border: 1px solid var(--dtsc-gray-200);
    border-radius: 8px;
    padding: 1.25rem;
    font-size: 0.875rem;
    color: var(--dtsc-gray-600);
}

.duration-times-spread-calculator .disclaimer h5 {
    color: var(--dtsc-warning);
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

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

.duration-times-spread-calculator .related-calc-card {
    display: block;
    background: white;
    border: 1px solid var(--dtsc-gray-200);
    border-radius: 12px;
    padding: 1.5rem;
    text-decoration: none;
    transition: var(--dtsc-transition);
}

.duration-times-spread-calculator .related-calc-card:hover {
    border-color: var(--dtsc-primary);
    box-shadow: var(--dtsc-shadow-md);
    transform: translateY(-2px);
}

.duration-times-spread-calculator .related-calc-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--dtsc-primary) 0%, var(--dtsc-primary-dark) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.duration-times-spread-calculator .related-calc-icon i {
    font-size: 1.5rem;
    color: white;
}

.duration-times-spread-calculator .related-calc-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dtsc-gray-800);
    margin-bottom: 0.5rem;
}

.duration-times-spread-calculator .related-calc-excerpt {
    font-size: 0.875rem;
    color: var(--dtsc-gray-500);
    margin-bottom: 0;
}

/* ===========================
   RESPONSIVE ADJUSTMENTS
   =========================== */

@media (max-width: 991.98px) {
    .duration-times-spread-calculator .hero-section {
        padding: 40px 0;
    }

    .duration-times-spread-calculator .hero-section h1 {
        font-size: 2rem;
    }
}

@media (max-width: 767.98px) {
    .duration-times-spread-calculator .hero-section h1 {
        font-size: 1.75rem;
    }

    .duration-times-spread-calculator .hero-section .lead {
        font-size: 1rem;
    }

    .duration-times-spread-calculator .metric-box strong {
        font-size: 1.25rem;
    }

    .duration-times-spread-calculator .chart-container {
        height: 250px;
    }

    .duration-times-spread-calculator .chart-tabs {
        flex-direction: column;
    }
}