/**
 * EV to Equity Value Bridge Calculator Styles
 *
 * Scoped to .dvb-calculator wrapper
 */

/* CSS Variables */
.dvb-calculator {
    --dvb-primary: #2563eb;
    --dvb-primary-dark: #1e40af;
    --dvb-positive: #15803d;
    --dvb-positive-bg: #dcfce7;
    --dvb-negative: #ef4444;
    --dvb-negative-bg: #fee2e2;
    --dvb-neutral: #6b7280;
    --dvb-neutral-bg: #f3f4f6;
    --dvb-text: #1f2937;
    --dvb-text-muted: #6b7280;
    --dvb-border: #e5e7eb;
    --dvb-card-bg: #ffffff;
    --dvb-card-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --dvb-card-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* Animations */
@keyframes dvbAnimateFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Section */
.dvb-calculator .hero-section {
    background: linear-gradient(135deg, var(--dvb-primary) 0%, var(--dvb-primary-dark) 100%);
    padding: 3rem 0;
    color: #ffffff;
}

.dvb-calculator .hero-section .display-4 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
}

.dvb-calculator .hero-section .lead {
    font-size: 1.25rem;
    opacity: 0.95;
}

.dvb-calculator .hero-section .text-white-50 {
    opacity: 0.7;
    font-size: 0.95rem;
}

/* Breadcrumb */
.dvb-calculator .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.dvb-calculator .breadcrumb-item a {
    color: var(--dvb-primary);
    text-decoration: none;
}

.dvb-calculator .breadcrumb-item a:hover {
    text-decoration: underline;
}

/* Calculator Cards */
.dvb-calculator .calculator-card {
    background: var(--dvb-card-bg);
    border: none;
    border-radius: 12px;
    box-shadow: var(--dvb-card-shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: dvbAnimateFadeInUp 0.6s ease-out backwards;
}

.dvb-calculator .calculator-card:hover {
    box-shadow: var(--dvb-card-shadow-hover);
    transform: translateY(-4px);
}

.dvb-calculator .col-lg-5 .calculator-card:nth-child(1) { animation-delay: 0ms; }
.dvb-calculator .col-lg-5 .calculator-card:nth-child(2) { animation-delay: 100ms; }
.dvb-calculator .col-lg-5 .calculator-card:nth-child(3) { animation-delay: 200ms; }
.dvb-calculator .col-lg-7 .calculator-card:nth-child(1) { animation-delay: 50ms; }
.dvb-calculator .col-lg-7 .calculator-card:nth-child(2) { animation-delay: 150ms; }
.dvb-calculator .col-lg-7 .calculator-card:nth-child(3) { animation-delay: 250ms; }
.dvb-calculator .col-lg-7 .calculator-card:nth-child(4) { animation-delay: 350ms; }
.dvb-calculator .col-lg-7 .calculator-card:nth-child(5) { animation-delay: 450ms; }

.dvb-calculator .card-header {
    background: linear-gradient(135deg, var(--dvb-primary) 0%, var(--dvb-primary-dark) 100%);
    color: #ffffff;
    font-weight: 600;
    padding: 1rem 1.25rem;
    border-radius: 12px 12px 0 0;
    border: none;
}

.dvb-calculator .card-body {
    padding: 1.5rem;
}

/* Form Inputs */
.dvb-calculator .form-label {
    font-weight: 600;
    color: var(--dvb-text);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dvb-calculator .form-control {
    border: 1px solid var(--dvb-border);
    border-radius: 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.dvb-calculator .form-control:focus {
    border-color: var(--dvb-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.dvb-calculator .form-control-lg {
    font-size: 1.1rem;
    padding: 0.75rem 1rem;
}

.dvb-calculator .input-group-text {
    background: var(--dvb-neutral-bg);
    border: 1px solid var(--dvb-border);
    color: var(--dvb-text-muted);
    font-weight: 500;
}

.dvb-calculator .form-text {
    font-size: 0.8rem;
    color: var(--dvb-text-muted);
}

/* Tooltip */
.dvb-calculator .dvb-tooltip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: var(--dvb-neutral-bg);
    border-radius: 50%;
    font-size: 0.7rem;
    color: var(--dvb-text-muted);
    cursor: help;
    position: relative;
}

.dvb-calculator .dvb-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--dvb-text);
    color: #ffffff;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 400;
    white-space: normal;
    width: max-content;
    max-width: 250px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 100;
    line-height: 1.4;
}

.dvb-calculator .dvb-tooltip::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--dvb-text);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.dvb-calculator .dvb-tooltip:hover::after,
.dvb-calculator .dvb-tooltip:hover::before {
    opacity: 1;
    visibility: visible;
}

/* Reset Button */
.dvb-calculator #dvb-reset {
    border-radius: 8px;
    padding: 0.75rem;
    font-weight: 500;
    transition: all 0.2s;
}

.dvb-calculator #dvb-reset:hover {
    background: var(--dvb-neutral-bg);
}

/* Formula Reference */
.dvb-calculator .dvb-formula-reference {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.9rem;
    background: var(--dvb-neutral-bg);
    padding: 1rem;
    border-radius: 8px;
}

.dvb-calculator .dvb-formula-reference p {
    margin-bottom: 0.5rem;
}

.dvb-calculator .dvb-formula-reference p:last-child {
    margin-bottom: 0;
}

/* Author Badge */
.dvb-calculator .dvb-author-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--dvb-text);
    transition: color 0.2s;
}

.dvb-calculator .dvb-author-link:hover {
    color: var(--dvb-primary);
}

.dvb-calculator .dvb-author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.dvb-calculator .dvb-author-name {
    font-weight: 600;
}

/* Results Card */
.dvb-calculator .results-card .card-header {
    background: linear-gradient(135deg, var(--dvb-positive) 0%, #166534 100%);
}

/* Warning Alert */
.dvb-calculator .alert-warning {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    color: #92400e;
    border-radius: 8px;
}

/* Result Boxes */
.dvb-calculator .dvb-result-box {
    background: var(--dvb-neutral-bg);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.dvb-calculator .dvb-result-box.net-cash {
    border: 2px solid var(--dvb-positive);
    background: var(--dvb-positive-bg);
}

.dvb-calculator .dvb-result-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--dvb-text-muted);
    margin-bottom: 0.25rem;
}

.dvb-calculator .dvb-result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dvb-text);
}

.dvb-calculator .dvb-result-value.positive {
    color: var(--dvb-positive);
}

.dvb-calculator .dvb-result-value.negative {
    color: var(--dvb-negative);
}

.dvb-calculator .dvb-result-value.highlight {
    color: var(--dvb-primary);
}

/* Chart Container */
.dvb-calculator .dvb-chart-container {
    height: 280px;
    position: relative;
}

/* Formula Steps */
.dvb-calculator .dvb-formula-steps {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.9rem;
}

.dvb-calculator .dvb-formula-step {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--dvb-border);
}

.dvb-calculator .dvb-formula-step:last-child {
    border-bottom: none;
}

.dvb-calculator .dvb-formula-step-label {
    color: var(--dvb-text-muted);
}

.dvb-calculator .dvb-formula-step-value {
    font-weight: 600;
    color: var(--dvb-text);
}

.dvb-calculator .dvb-formula-step-value.positive {
    color: var(--dvb-positive);
}

.dvb-calculator .dvb-formula-step-value.negative {
    color: var(--dvb-negative);
}

.dvb-calculator .dvb-formula-step.total {
    background: var(--dvb-neutral-bg);
    margin: 0.5rem -1.5rem -1.5rem;
    padding: 1rem 1.5rem;
    border-radius: 0 0 12px 12px;
}

.dvb-calculator .dvb-formula-step.total .dvb-formula-step-label,
.dvb-calculator .dvb-formula-step.total .dvb-formula-step-value {
    font-weight: 700;
    font-size: 1rem;
}

/* Assumptions List */
.dvb-calculator .dvb-assumptions-list {
    padding-left: 1.25rem;
    margin: 0;
}

.dvb-calculator .dvb-assumptions-list li {
    margin-bottom: 0.5rem;
    color: var(--dvb-text-muted);
    font-size: 0.9rem;
}

.dvb-calculator .dvb-assumptions-list li:last-child {
    margin-bottom: 0;
}

/* FAQ Accordion */
.dvb-calculator .accordion-item {
    border: none;
    border-bottom: 1px solid var(--dvb-border);
}

.dvb-calculator .accordion-item:last-child {
    border-bottom: none;
}

.dvb-calculator .accordion-button {
    font-weight: 600;
    color: var(--dvb-text);
    padding: 1rem 0;
    background: transparent;
    box-shadow: none;
}

.dvb-calculator .accordion-button:not(.collapsed) {
    color: var(--dvb-primary);
    background: transparent;
}

.dvb-calculator .accordion-button:focus {
    box-shadow: none;
    border-color: transparent;
}

.dvb-calculator .accordion-button::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");
}

.dvb-calculator .accordion-body {
    padding: 0 0 1rem 0;
    color: var(--dvb-text-muted);
    line-height: 1.7;
}

/* Disclaimer */
.dvb-calculator .dvb-disclaimer {
    background: #fffbeb;
    border-left: 4px solid #f59e0b;
    padding: 1rem 1.25rem;
    border-radius: 0 8px 8px 0;
    font-size: 0.9rem;
    color: #92400e;
}

/* Related Calculators */
.dvb-calculator .dvb-related-link {
    text-decoration: none;
}

.dvb-calculator .dvb-related-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
    background: var(--dvb-neutral-bg);
    border-radius: 8px;
    transition: all 0.3s ease;
    min-height: 100px;
}

.dvb-calculator .dvb-related-card:hover {
    background: linear-gradient(135deg, var(--dvb-primary) 0%, var(--dvb-primary-dark) 100%);
    transform: translateY(-4px);
}

.dvb-calculator .dvb-related-card:hover .dvb-related-icon,
.dvb-calculator .dvb-related-card:hover .dvb-related-title {
    color: #ffffff;
}

.dvb-calculator .dvb-related-icon {
    font-size: 1.5rem;
    color: var(--dvb-primary);
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

.dvb-calculator .dvb-related-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dvb-text);
    text-align: center;
    transition: color 0.3s;
}

/* Responsive Design */
@media (max-width: 991px) {
    .dvb-calculator .hero-section {
        padding: 2rem 0;
    }

    .dvb-calculator .hero-section .display-4 {
        font-size: 2rem;
    }

    .dvb-calculator .dvb-result-value {
        font-size: 1.25rem;
    }

    .dvb-calculator .dvb-chart-container {
        height: 240px;
    }
}

@media (max-width: 767px) {
    .dvb-calculator .hero-section .display-4 {
        font-size: 1.75rem;
    }

    .dvb-calculator .hero-section .lead {
        font-size: 1.1rem;
    }

    .dvb-calculator .dvb-result-value {
        font-size: 1.1rem;
    }

    .dvb-calculator .dvb-formula-steps {
        font-size: 0.8rem;
    }

    .dvb-calculator .dvb-formula-step {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .dvb-calculator .dvb-chart-container {
        height: 220px;
    }
}

@media (max-width: 576px) {
    .dvb-calculator .hero-section .display-4 {
        font-size: 1.5rem;
    }

    .dvb-calculator .card-body {
        padding: 1rem;
    }

    .dvb-calculator .dvb-result-value {
        font-size: 1rem;
    }

    .dvb-calculator .dvb-result-label {
        font-size: 0.65rem;
    }

    .dvb-calculator .dvb-chart-container {
        height: 200px;
    }

    .dvb-calculator .dvb-tooltip::after {
        max-width: 200px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .dvb-calculator .calculator-card,
    .dvb-calculator .dvb-result-box,
    .dvb-calculator .dvb-related-card {
        animation: none;
        transition: none;
    }

    .dvb-calculator .calculator-card:hover,
    .dvb-calculator .dvb-related-card:hover {
        transform: none;
    }
}

/* Utility Classes */
.dvb-calculator .dvb-hidden {
    display: none !important;
}