/**
 * ROI Calculator -- Page-Specific Styles
 *
 * Styles for the ROI Calculator page at /fabops/roi/.
 * Uses design system CSS custom properties from critical.css.
 * Does NOT duplicate tool-shared.css (email gate, teaser) styles.
 *
 * Sections:
 *   1. Hero
 *   2. Progress Indicator
 *   3. Form Steps + Inputs
 *   4. Range Slider (custom thumb)
 *   5. Results Grid + Cards
 *   6. Comparison Table
 *   7. Methodology + Scenario Toggle
 *   8. CTA Section
 *   9. Animations
 *  10. Tablet Responsive (max-width: 768px)
 *  11. Mobile Responsive (max-width: 480px)
 *
 * @package Onyx
 * @version 1.0.0
 */

/* ==========================================================================
   1. Hero
   ========================================================================== */

.roi-hero {
    text-align: center;
    padding: var(--onyx-section-pad-lg) 0;
}

.roi-hero__title {
    font-size: 2.75rem;
    font-weight: var(--onyx-font-black);
    color: var(--onyx-text-white);
    margin: 0 0 1rem;
    line-height: 1.15;
}

.roi-hero__subtitle {
    font-size: 1.25rem;
    color: var(--onyx-text-white-80);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ==========================================================================
   2. Progress Indicator
   ========================================================================== */

.roi-progress {
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.roi-progress__steps {
    display: flex;
    justify-content: space-between;
    list-style: none;
    margin: 0 0 1rem;
    padding: 0;
    position: relative;
}

.roi-progress__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
    flex: 1;
}

/* Connector lines between steps */
.roi-progress__step::after {
    content: '';
    position: absolute;
    top: 16px;
    left: calc(50% + 16px);
    width: calc(100% - 32px);
    height: 2px;
    background: var(--onyx-border-light, #E0E0E0);
    z-index: -1;
}

.roi-progress__step:last-child::after {
    display: none;
}

.roi-progress__step--completed::after {
    background: var(--onyx-gold, #FFBB09);
}

.roi-progress__number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--onyx-border-light, #E0E0E0);
    color: var(--onyx-text-caption, #666);
    font-size: 0.875rem;
    font-weight: var(--onyx-font-bold);
    transition: background var(--onyx-transition), color var(--onyx-transition);
}

.roi-progress__label {
    font-size: 0.8125rem;
    color: var(--onyx-text-caption, #666);
    font-weight: var(--onyx-font-regular);
    transition: color var(--onyx-transition), font-weight var(--onyx-transition);
}

/* Current step */
.roi-progress__step--current .roi-progress__number {
    background: var(--onyx-gold, #FFBB09);
    color: var(--onyx-navy, #1F273B);
}

.roi-progress__step--current .roi-progress__label {
    color: var(--onyx-text-heading, #1F273B);
    font-weight: var(--onyx-font-bold);
}

/* Completed step */
.roi-progress__step--completed .roi-progress__number {
    background: var(--onyx-gold, #FFBB09);
    color: var(--onyx-navy, #1F273B);
}

.roi-progress__step--completed .roi-progress__label {
    color: var(--onyx-text-heading, #1F273B);
}

/* Progress bar */
.roi-progress__bar {
    display: block;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    appearance: none;
    -webkit-appearance: none;
    border: none;
    background: var(--onyx-border-light, #E0E0E0);
}

.roi-progress__bar::-webkit-progress-bar {
    background: var(--onyx-border-light, #E0E0E0);
    border-radius: 2px;
}

.roi-progress__bar::-webkit-progress-value {
    background: var(--onyx-gold, #FFBB09);
    border-radius: 2px;
    transition: width 0.3s var(--onyx-ease);
}

.roi-progress__bar::-moz-progress-bar {
    background: var(--onyx-gold, #FFBB09);
    border-radius: 2px;
}

/* ==========================================================================
   3. Form Steps + Inputs
   ========================================================================== */

.roi-form-section {
    background: var(--onyx-bg-off-white, #F7F8FA);
}

#roi-calculator-form {
    max-width: 600px;
    margin: 0 auto;
}

.roi-step {
    border: none;
    padding: 2rem;
    margin: 0;
    background: var(--onyx-bg-white, #FFFFFF);
    border-radius: var(--onyx-card-radius, 12px);
    box-shadow: var(--onyx-shadow-card, 0 4px 16px rgba(31, 39, 59, 0.1));
}

.roi-input-group {
    margin-bottom: 1.5rem;
}

.roi-input-group label {
    display: block;
    font-size: 1.125rem;
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-text-heading, #1F273B);
    margin-bottom: 0.75rem;
}

.roi-input-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.roi-input-row input[type="range"] {
    flex: 1;
    height: 6px;
    cursor: pointer;
}

.roi-input-number {
    width: 100px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--onyx-border-light, #E0E0E0);
    border-radius: var(--onyx-btn-radius, 8px);
    font-size: 1rem;
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-text-heading, #1F273B);
    text-align: right;
    font-family: var(--onyx-font-family);
}

.roi-input-number:focus {
    outline: 2px solid var(--onyx-gold, #FFBB09);
    outline-offset: 2px;
    border-color: var(--onyx-gold, #FFBB09);
}

.roi-input-help {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--onyx-text-caption, #666);
    line-height: 1.5;
}

/* Step navigation */
.roi-step__nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.roi-btn-back {
    display: inline-block;
    padding: 12px 24px;
    background: transparent;
    color: var(--onyx-text-caption, #666);
    font-weight: var(--onyx-font-bold);
    font-size: 0.9375rem;
    border: 2px solid var(--onyx-border-light, #E0E0E0);
    border-radius: var(--onyx-btn-radius, 8px);
    cursor: pointer;
    transition: border-color var(--onyx-transition), color var(--onyx-transition);
    font-family: var(--onyx-font-family);
}

.roi-btn-back:hover,
.roi-btn-back:focus {
    border-color: var(--onyx-navy, #1F273B);
    color: var(--onyx-navy, #1F273B);
}

.roi-btn-calculate {
    font-size: 1.0625rem;
    padding: 14px 36px;
}

/* ==========================================================================
   4. Range Slider (Custom Thumb)
   ========================================================================== */

/* Reset */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

input[type="range"]:focus {
    outline: none;
}

/* Track -- WebKit */
input[type="range"]::-webkit-slider-runnable-track {
    height: 6px;
    background: var(--onyx-border-light, #E0E0E0);
    border-radius: 3px;
}

/* Track -- Firefox */
input[type="range"]::-moz-range-track {
    height: 6px;
    background: var(--onyx-border-light, #E0E0E0);
    border-radius: 3px;
    border: none;
}

/* Thumb -- WebKit */
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--onyx-gold, #FFBB09);
    border: 3px solid var(--onyx-bg-white, #FFFFFF);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    margin-top: -8px;
    transition: transform 0.15s var(--onyx-ease), box-shadow 0.15s var(--onyx-ease);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

input[type="range"]:focus::-webkit-slider-thumb {
    box-shadow: 0 0 0 3px rgba(255, 187, 9, 0.3);
}

/* Thumb -- Firefox */
input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--onyx-gold, #FFBB09);
    border: 3px solid var(--onyx-bg-white, #FFFFFF);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: transform 0.15s var(--onyx-ease), box-shadow 0.15s var(--onyx-ease);
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

input[type="range"]:focus::-moz-range-thumb {
    box-shadow: 0 0 0 3px rgba(255, 187, 9, 0.3);
}

/* ==========================================================================
   5. Results Grid + Cards
   ========================================================================== */

.roi-results {
    background: var(--onyx-bg-off-white, #F7F8FA);
}

.roi-results__heading {
    text-align: center;
    font-size: 2rem;
    font-weight: var(--onyx-font-black);
    color: var(--onyx-text-heading, #1F273B);
    margin: 0 0 2rem;
}

.roi-results__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.roi-results__card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--onyx-bg-white, #FFFFFF);
    border-radius: var(--onyx-card-radius, 12px);
    box-shadow: var(--onyx-shadow-card, 0 4px 16px rgba(31, 39, 59, 0.1));
}

.roi-results__value {
    display: block;
    font-size: 2.25rem;
    font-weight: var(--onyx-font-black);
    color: var(--onyx-gold, #FFBB09);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.roi-results__label {
    font-size: 0.875rem;
    color: var(--onyx-text-caption, #666);
    font-weight: var(--onyx-font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Tier card -- distinct styling */
.roi-results__card--tier {
    background: var(--onyx-navy, #1F273B);
}

.roi-results__card--tier .roi-results__value {
    color: var(--onyx-gold, #FFBB09);
}

.roi-results__card--tier .roi-results__label {
    color: var(--onyx-text-white-80);
}

/* ==========================================================================
   6. Comparison Table
   ========================================================================== */

.roi-comparison {
    max-width: 700px;
    margin: 0 auto;
}

.roi-comparison__heading {
    font-size: 1.375rem;
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-text-heading, #1F273B);
    margin: 0 0 1rem;
    text-align: center;
}

.roi-comparison__scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.roi-comparison__table {
    width: 100%;
    border-collapse: collapse;
    min-width: 460px;
}

.roi-comparison__table th,
.roi-comparison__table td {
    padding: 0.875rem 1rem;
    text-align: center;
    font-size: 0.9375rem;
}

.roi-comparison__table th {
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-text-heading, #1F273B);
    border-bottom: 2px solid var(--onyx-border-light, #E0E0E0);
}

.roi-comparison__table th:first-child,
.roi-comparison__table td:first-child {
    text-align: left;
}

.roi-comparison__table tbody tr:nth-child(even) {
    background: var(--onyx-bg-off-white, #F7F8FA);
}

.roi-comparison__table tbody td {
    color: var(--onyx-text-body, #333);
}

/* Highlighted "With FabOps" column */
.roi-comparison__highlight {
    background: var(--onyx-gold, #FFBB09);
    color: var(--onyx-navy, #1F273B);
}

.roi-comparison__with {
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-navy, #1F273B);
}

/* ==========================================================================
   7. Methodology + Scenario Toggle
   ========================================================================== */

.roi-methodology {
    background: var(--onyx-bg-white, #FFFFFF);
}

.roi-methodology__heading {
    font-size: 1.75rem;
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-text-heading, #1F273B);
    margin: 0 0 1.5rem;
    text-align: center;
}

/* Scenario toggle buttons */
.roi-scenario-toggle {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.roi-scenario-btn {
    padding: 0.625rem 1.25rem;
    border: 2px solid var(--onyx-border-light, #E0E0E0);
    border-radius: var(--onyx-btn-radius, 8px);
    background: transparent;
    color: var(--onyx-text-body, #333);
    font-size: 0.9375rem;
    font-weight: var(--onyx-font-semibold);
    cursor: pointer;
    transition: background var(--onyx-transition), color var(--onyx-transition), border-color var(--onyx-transition);
    font-family: var(--onyx-font-family);
}

.roi-scenario-btn:hover {
    border-color: var(--onyx-gold, #FFBB09);
    color: var(--onyx-navy, #1F273B);
}

.roi-scenario-btn--active {
    background: var(--onyx-gold, #FFBB09);
    color: var(--onyx-navy, #1F273B);
    border-color: var(--onyx-gold, #FFBB09);
}

/* Toggle trigger button */
.roi-methodology__toggle {
    display: block;
    margin: 0 auto 1.5rem;
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    color: var(--onyx-gold, #FFBB09);
    font-size: 0.9375rem;
    font-weight: var(--onyx-font-semibold);
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
    font-family: var(--onyx-font-family);
    transition: color var(--onyx-transition);
}

.roi-methodology__toggle:hover {
    color: var(--onyx-light-gold, #FFC93C);
}

/* Collapsible content (hidden by default) */
.roi-methodology__content {
    display: none;
    max-width: 700px;
    margin: 0 auto;
}

.roi-methodology__intro {
    font-size: 1rem;
    color: var(--onyx-text-body, #333);
    line-height: 1.7;
    margin: 0 0 1.5rem;
}

.roi-methodology__formula h3,
.roi-methodology__assumptions h3 {
    font-size: 1.125rem;
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-text-heading, #1F273B);
    margin: 0 0 0.75rem;
}

.roi-methodology__code {
    background: var(--onyx-navy, #1F273B);
    color: var(--onyx-text-white-80);
    padding: 1.25rem 1.5rem;
    border-radius: var(--onyx-btn-radius, 8px);
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875rem;
    line-height: 1.8;
    overflow-x: auto;
    white-space: pre-wrap;
    margin: 0 0 1.5rem;
}

.roi-methodology__assumptions p {
    font-size: 0.9375rem;
    color: var(--onyx-text-body, #333);
    line-height: 1.7;
}

/* ==========================================================================
   8. CTA Section
   ========================================================================== */

.roi-cta {
    text-align: center;
}

.roi-cta__heading {
    font-size: 2rem;
    font-weight: var(--onyx-font-black);
    color: var(--onyx-text-white);
    margin: 0 0 2.5rem;
}

.roi-cta__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.roi-cta__card {
    padding: 2.5rem 2rem;
    border-radius: var(--onyx-card-radius, 12px);
    text-align: center;
}

.roi-cta__card--report {
    background: var(--onyx-mid-navy, #303D5D);
}

.roi-cta__card--book {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.roi-cta__card-title {
    font-size: 1.25rem;
    font-weight: var(--onyx-font-bold);
    color: var(--onyx-text-white);
    margin: 0 0 0.75rem;
}

.roi-cta__card-text {
    font-size: 0.9375rem;
    color: var(--onyx-text-white-80);
    line-height: 1.6;
    margin: 0 0 1.5rem;
}

/* ==========================================================================
   9. Animations
   ========================================================================== */

/* Results section fade-in when shown by JS */
.roi-results[style*="display: block"],
.roi-results:not([style*="display:none"]):not([style*="display: none"]) {
    animation: roiFadeIn 0.5s var(--onyx-ease) both;
}

@keyframes roiFadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stagger children in results grid */
.roi-results__grid .roi-results__card {
    opacity: 0;
    transform: translateY(12px);
}

.roi-results--visible .roi-results__card {
    animation: roiCardIn 0.4s var(--onyx-ease) both;
}

.roi-results--visible .roi-results__card:nth-child(1) { animation-delay: 0.05s; }
.roi-results--visible .roi-results__card:nth-child(2) { animation-delay: 0.1s; }
.roi-results--visible .roi-results__card:nth-child(3) { animation-delay: 0.15s; }
.roi-results--visible .roi-results__card:nth-child(4) { animation-delay: 0.2s; }

@keyframes roiCardIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    .roi-results[style*="display: block"],
    .roi-results:not([style*="display:none"]):not([style*="display: none"]) {
        animation: none;
    }
    .roi-results--visible .roi-results__card {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   10. Tablet Responsive (max-width: 768px)
   ========================================================================== */

@media (max-width: 768px) {
    .roi-hero__title {
        font-size: 2rem;
    }

    .roi-hero__subtitle {
        font-size: 1.0625rem;
    }

    /* Progress: compact labels */
    .roi-progress__label {
        font-size: 0.75rem;
    }

    .roi-progress__number {
        width: 28px;
        height: 28px;
        font-size: 0.8125rem;
    }

    .roi-progress__step::after {
        top: 14px;
        left: calc(50% + 14px);
        width: calc(100% - 28px);
    }

    /* Form steps */
    .roi-step {
        padding: 1.5rem;
    }

    /* Results: 2 columns */
    .roi-results__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .roi-results__value {
        font-size: 1.75rem;
    }

    /* CTA: stack */
    .roi-cta__grid {
        grid-template-columns: 1fr;
    }

    .roi-cta__heading {
        font-size: 1.5rem;
    }

    /* Scenario toggle: wrap if needed */
    .roi-scenario-toggle {
        flex-wrap: wrap;
    }
}

/* ==========================================================================
   11. Mobile Responsive (max-width: 480px)
   ========================================================================== */

@media (max-width: 480px) {
    .roi-hero {
        padding: var(--onyx-section-pad-sm) 0;
    }

    .roi-hero__title {
        font-size: 1.625rem;
    }

    .roi-hero__subtitle {
        font-size: 1rem;
    }

    /* Progress: numbers only, hide labels */
    .roi-progress__label {
        display: none;
    }

    .roi-progress__step::after {
        top: 12px;
        left: calc(50% + 12px);
        width: calc(100% - 24px);
    }

    .roi-progress__number {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }

    /* Form: full width */
    .roi-step {
        padding: 1.25rem 1rem;
    }

    .roi-input-row {
        flex-direction: column;
        gap: 0.75rem;
    }

    .roi-input-number {
        width: 100%;
        text-align: left;
    }

    .roi-input-group label {
        font-size: 1rem;
    }

    /* Navigation: full width buttons */
    .roi-step__nav {
        flex-direction: column;
    }

    .roi-step__nav .roi-btn-back {
        order: 2;
    }

    .roi-step__nav .onyx-btn-primary {
        width: 100%;
        text-align: center;
    }

    .roi-step__nav .roi-btn-back {
        width: 100%;
        text-align: center;
    }

    /* Results: single column */
    .roi-results__grid {
        grid-template-columns: 1fr;
    }

    .roi-results__heading {
        font-size: 1.5rem;
    }

    .roi-results__value {
        font-size: 1.5rem;
    }

    /* Comparison table: ensure scroll works */
    .roi-comparison__scroll {
        margin: 0 -1rem;
        padding: 0 1rem;
    }

    /* Methodology */
    .roi-methodology__heading {
        font-size: 1.375rem;
    }

    .roi-methodology__code {
        font-size: 0.8125rem;
        padding: 1rem;
    }

    /* Scenario buttons: full width stack */
    .roi-scenario-toggle {
        flex-direction: column;
        align-items: stretch;
    }

    .roi-scenario-btn {
        text-align: center;
    }

    /* CTA */
    .roi-cta__card {
        padding: 2rem 1.5rem;
    }

    .roi-cta__heading {
        font-size: 1.375rem;
    }
}