/* ==========================================================================
   HOW IT WORKS PAGE STYLES
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. HERO SECTION
   -------------------------------------------------------------------------- */
.du-hiw-hero {
    background-color: var(--background);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
    position: relative;
    overflow: hidden;
}

.du-hiw-hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-lg);
    align-items: center;
}

.du-hiw-hero__content {
    max-width: 600px;
}

.du-hiw-hero__eyebrow {
    color: var(--surface-tint);
    margin: 0 0 var(--space-sm);
}

.du-hiw-hero__headline {
    margin: 0 0 var(--space-md);
}

.du-hiw-hero__emphasis {
    font-style: italic;
    color: var(--surface-tint);
}

.du-hiw-hero__description {
    color: var(--text-body);
    margin: 0 0 var(--space-lg);
    max-width: 48ch;
}

.du-hiw-hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
}

/* Dashboard Panel Graphic (Mock SaaS) */
.du-hiw-hero__media {
    position: relative;
    width: 100%;
    max-width: 540px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.du-hiw-hero__media.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

.du-hiw-dashboard {
    background-color: var(--surface);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level-2);
    padding: var(--space-md);
    position: relative;
    width: 100%;
}

.du-hiw-dashboard__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: var(--border-width) solid var(--border);
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-md);
}

.du-hiw-dashboard__title {
    margin: 0;
    font-family: var(--font-sans);
    font-size: var(--body-md-size);
    font-weight: 700;
    color: var(--on-background);
}

.du-hiw-dashboard__badge {
    background-color: color-mix(in srgb, var(--success) 12%, var(--surface));
    color: var(--success);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* Metrics row */
.du-hiw-dashboard__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.du-hiw-dashboard__metric {
    background-color: var(--surface-container-low);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    transition: transform var(--transition-fast);
}

.du-hiw-dashboard__metric:hover {
    transform: translateY(-2px);
}

.du-hiw-dashboard__metric-label {
    margin: 0 0 4px;
    color: var(--on-surface-variant);
    font-size: 12px;
}

.du-hiw-dashboard__metric-value {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-container);
}

/* Chart Canvas */
.du-hiw-dashboard__chart-wrap {
    height: 140px;
    position: relative;
}

.du-hiw-dashboard__chart-svg {
    width: 100%;
    height: 100%;
}

.du-hiw-dashboard__chart-line {
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    transition: stroke-dashoffset 1.8s var(--ease-standard);
}

.du-hiw-dashboard__chart-line.is-animated {
    stroke-dashoffset: 0;
}

/* Floating widgets */
.du-hiw-dashboard__float {
    position: absolute;
    background-color: var(--surface);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-level-1);
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    pointer-events: none;
    z-index: 2;
    transition: transform var(--transition-slow);
}

.du-hiw-dashboard__float--left {
    bottom: -15px;
    left: -20px;
}

.du-hiw-dashboard__float--right {
    top: 50%;
    right: -30px;
    transform: translateY(-50%);
}

.du-hiw-dashboard__float-icon {
    color: var(--healthy);
    display: inline-flex;
}

.du-hiw-dashboard__float-text {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 600;
    margin: 0;
    color: var(--on-background);
}

@media (min-width: 1025px) {
    .du-hiw-hero__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }
}

/* --------------------------------------------------------------------------
   2. THREE PILLARS OF DISCOVERY
   -------------------------------------------------------------------------- */
.du-pillars {
    background-color: var(--surface);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.du-pillars__header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.du-pillars__heading {
    margin: 0 0 var(--space-sm);
}

.du-pillars__description {
    color: var(--on-surface-variant);
    margin: 0;
}

.du-pillars__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
    position: relative;
}

.du-pillar-card {
    background-color: var(--surface);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level-1);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--transition-slow), transform var(--transition-slow),
                box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.du-pillar-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.du-pillar-card:hover {
    border-color: var(--primary-hover);
    box-shadow: var(--shadow-level-2);
    transform: translateY(-3px);
}

.du-pillar-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--surface-container-low);
    color: var(--primary);
    margin-bottom: var(--space-md);
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.du-pillar-card:hover .du-pillar-card__icon {
    transform: translateY(-2px) scale(1.05);
    background-color: var(--surface-container-high);
}

.du-pillar-card__title {
    font-size: clamp(1.2rem, 1.6vw, 1.375rem);
    margin: 0 0 var(--space-xs);
    color: var(--on-background);
}

.du-pillar-card__description {
    color: var(--on-surface-variant);
    margin: 0;
}

@media (min-width: 1025px) {
    .du-pillars__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Horizontal connection dashed line behind cards */
    .du-pillars__grid::before {
        content: '';
        position: absolute;
        top: 60px;
        left: 10%;
        right: 10%;
        height: 2px;
        border-top: 2px dashed var(--border);
        z-index: 0;
    }
}

/* --------------------------------------------------------------------------
   3. ASSESSMENT ENGINE (Reusing gauge core classes)
   -------------------------------------------------------------------------- */
.du-hiw-assessment {
    background-color: var(--surface-container-lowest);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.du-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: var(--progress-bar-height);
    background: var(--outline-variant);
    border-radius: var(--radius-full);
    outline: none;
    margin: var(--space-sm) 0;
}

.du-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: var(--slider-thumb-size);
    height: var(--slider-thumb-size);
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--primary-container);
    cursor: pointer;
    box-shadow: var(--shadow-level-1);
    transition: transform var(--transition-fast);
}

.du-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.du-slider::-moz-range-thumb {
    width: var(--slider-thumb-size);
    height: var(--slider-thumb-size);
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--primary-container);
    cursor: pointer;
    box-shadow: var(--shadow-level-1);
    transition: transform var(--transition-fast);
}

.du-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
}

.du-assessment-card--slider {
    background-color: var(--surface-container-low);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.du-assessment-card__compass-icon {
    position: absolute;
    bottom: -10px;
    right: -10px;
    color: var(--border);
    opacity: 0.4;
    transform: rotate(45deg);
    pointer-events: none;
}

.du-slider-value-display {
    font-family: var(--font-mono);
    font-size: var(--caption-size);
    color: var(--primary-container);
    font-weight: 700;
    margin-left: var(--space-xs);
}

/* --------------------------------------------------------------------------
   4. METHODOLOGY COMPARISON (Why Our Method Is Different)
   -------------------------------------------------------------------------- */
.du-comparison {
    background-color: var(--surface);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.du-comparison__header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.du-comparison__heading {
    margin: 0 0 var(--space-sm);
}

.du-comparison__description {
    color: var(--on-surface-variant);
    margin: 0;
}

.du-comparison__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
    align-items: stretch;
}

.du-compare-card {
    background-color: var(--surface);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level-1);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    position: relative;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--transition-slow), transform var(--transition-slow),
                box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.du-compare-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.du-compare-card:hover {
    box-shadow: var(--shadow-level-2);
    transform: translateY(-2px);
}

.du-compare-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--surface-container-low);
    color: var(--primary);
    margin-bottom: var(--space-md);
}

.du-compare-card__title {
    font-size: clamp(1.25rem, 1.8vw, 1.5rem);
    margin: 0 0 var(--space-md);
    color: var(--on-background);
}

.du-compare-card__features {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.du-compare-card__feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
    font-family: var(--font-sans);
    font-size: var(--body-md-size);
    line-height: var(--body-md-line);
    color: var(--text-body);
}

.du-compare-card__feature-icon {
    display: inline-flex;
    color: var(--outline);
    flex-shrink: 0;
    margin-top: 3px;
}

/* Highlighted Column (DownSide Up Assessment) */
.du-compare-card--highlight {
    background-color: var(--primary);
    color: var(--on-primary);
    border-color: transparent;
}

.du-compare-card--highlight .du-compare-card__icon {
    background-color: var(--primary-container);
    color: var(--on-primary);
}

.du-compare-card--highlight .du-compare-card__title {
    color: var(--on-primary);
}

.du-compare-card--highlight .du-compare-card__feature {
    color: var(--inverse-on-surface);
}

.du-compare-card--highlight .du-compare-card__feature-icon {
    color: var(--success);
}

.du-compare-card__tag {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background-color: var(--secondary);
    color: var(--on-secondary);
    font-family: var(--font-sans);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: var(--label-caps-tracking);
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

@media (min-width: 1025px) {
    .du-comparison__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* --------------------------------------------------------------------------
   5. PRIVACY SECTION (Dark styling)
   -------------------------------------------------------------------------- */
.du-privacy {
    background-color: var(--inverse-surface);
    color: var(--inverse-on-surface);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.du-privacy__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-xl);
    align-items: center;
}

.du-privacy__content {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.du-privacy__content.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.du-privacy__eyebrow {
    color: var(--inverse-on-surface);
    opacity: 0.8;
    margin: 0 0 var(--space-sm);
}

.du-privacy__heading {
    color: var(--on-primary);
    margin: 0 0 var(--space-md);
}

.du-privacy__description {
    color: var(--inverse-on-surface);
    opacity: 0.9;
    margin: 0 0 var(--space-lg);
    max-width: 48ch;
}

.du-privacy__features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.du-privacy-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.du-privacy-feature.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.du-privacy-feature__icon {
    display: inline-flex;
    color: var(--success);
    background-color: rgba(99, 166, 110, 0.15);
    padding: var(--space-xs);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.du-privacy-feature__title {
    font-size: var(--body-lg-size);
    font-weight: 600;
    margin: 0 0 4px;
    color: var(--on-primary);
}

.du-privacy-feature__description {
    margin: 0;
    font-size: var(--body-md-size);
    color: var(--inverse-on-surface);
    opacity: 0.85;
}

/* Shield Animation Wrapper */
.du-privacy__media {
    display: flex;
    justify-content: center;
    align-items: center;
}

.du-privacy-shield-container {
    width: 240px;
    height: 240px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.du-privacy-shield-container::before {
    content: '';
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 1px dashed rgba(255, 255, 255, 0.2);
}

.du-privacy-shield-container::after {
    content: '';
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.05);
    animation: du-pulse 4s ease-in-out infinite;
}

.du-privacy-shield-badge {
    background-color: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(var(--backdrop-blur-level-2));
    border: var(--border-width) solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    padding: var(--space-xs) var(--space-sm);
    color: var(--on-primary);
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    box-shadow: var(--shadow-level-2);
}

.du-privacy-shield-badge__text {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: var(--label-caps-tracking);
    text-transform: uppercase;
    margin: 0;
}

.du-privacy-shield-icon {
    color: var(--success);
    z-index: 1;
    animation: du-shield-glow 3s ease-in-out infinite;
}

@keyframes du-pulse {
    0% { transform: scale(0.95); opacity: 0.4; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(0.95); opacity: 0.4; }
}

@keyframes du-shield-glow {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 0px rgba(99, 166, 110, 0)); }
    50% { transform: scale(1.03); filter: drop-shadow(0 0 10px rgba(99, 166, 110, 0.4)); }
}

@media (min-width: 1025px) {
    .du-privacy__inner {
        grid-template-columns: 1.2fr 0.8fr;
        gap: var(--space-xl);
    }
}

/* --------------------------------------------------------------------------
   6. FINAL CTA
   -------------------------------------------------------------------------- */
.du-hiw-cta {
    background-color: var(--background);
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.du-hiw-cta .du-cta {
    margin: 0 auto;
}

.du-hiw-cta .du-cta__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

@media (prefers-reduced-motion: reduce) {
    .du-hiw-hero__media,
    .du-pillar-card,
    .du-compare-card,
    .du-privacy__content,
    .du-privacy-feature {
        transition: none !important;
        transform: none !important;
        opacity: 1 !important;
    }
    .du-privacy-shield-container::after,
    .du-privacy-shield-icon {
        animation: none !important;
    }
}