/* ============================================
   HOW IT WORKS - Page-Specific Styles
   Builds on styles.css design system
   ============================================ */

/* Reduce hero bottom gap for this page */
.hero-content {
    margin-bottom: 0.5rem;
}

/* ---- Sticky Process Stepper ---- */
.hiw-stepper-wrapper {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: var(--color-white);
    padding: 0.75rem 0;
    margin-bottom: 2rem;
}

.hiw-stepper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 2rem 1rem;
    background-color: var(--color-slate-50);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-slate-200);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.hiw-stepper::-webkit-scrollbar {
    display: none;
}

.hiw-stepper-item {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.hiw-stepper-dot {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.25s ease, filter 0.25s ease;
}

.hiw-stepper-dot:hover {
    transform: scale(1.25);
    text-decoration: none;
    z-index: 2;
}

.hiw-stepper-circle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: var(--color-white);
    border: 2px solid var(--color-slate-200);
    color: var(--color-slate-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    transition: all 0.3s ease;
}

.hiw-stepper-dot:hover .hiw-stepper-circle,
.hiw-stepper-dot.active .hiw-stepper-circle {
    background-color: var(--color-theme-3);
    border-color: var(--color-theme-3);
    color: var(--color-white);
}

.hiw-stepper-label {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-slate-500);
    text-align: center;
    max-width: 85px;
    line-height: 1.25;
    transition: color 0.3s ease, font-weight 0.25s ease;
}

.hiw-stepper-dot:hover .hiw-stepper-label {
    color: var(--color-theme-3);
    font-weight: 700;
}

.hiw-stepper-dot.active .hiw-stepper-label {
    color: var(--color-theme-3);
    font-weight: 600;
}

.hiw-stepper-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-slate-200);
    flex-shrink: 0;
    margin: 0 3px;
    margin-bottom: 1.4rem;
    transition: background-color 0.3s ease;
}

.hiw-stepper-line.active {
    background-color: var(--color-theme-3);
}

/* ---- Step Icons (inline SVG with fill: currentColor) ---- */
svg.hiw-icon {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
    stroke: currentColor;
    stroke-width: 0.8;
}

.hiw-stepper-circle svg.hiw-icon {
    width: 20px;
    height: 20px;
}

.hiw-category-num svg.hiw-icon {
    width: 22px;
    height: 22px;
}

.hiw-mobile-toc-num svg.hiw-icon {
    width: 14px;
    height: 14px;
    vertical-align: -2px;
}

/* ---- Section Cards ---- */
.hiw-category {
    margin-bottom: 2.5rem;
    scroll-margin-top: 130px;
}

.hiw-category-header {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.hiw-category-num {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background-color: var(--color-theme-3);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    line-height: 1;
    flex-shrink: 0;
}

.hiw-category-title-group {
    flex: 1;
}

.hiw-category-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-theme-3);
    margin: 0 0 0.25rem 0;
    line-height: 1.3;
}

.hiw-category-subtitle {
    font-size: var(--text-sm);
    color: var(--color-slate-500);
    margin: 0;
    line-height: 1.5;
}

.hiw-category-body {
    padding-left: 0;
}

.hiw-category-intro {
    font-size: var(--text-lg);
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* ---- Subcategory Cards ---- */
.hiw-subcategory {
    padding: 1.75rem 2rem;
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-slate-200);
    margin-bottom: 1.25rem;
    transition: all 0.3s ease;
    scroll-margin-top: 130px;
}

.hiw-subcategory:last-child {
    margin-bottom: 0;
}

.hiw-subcategory:hover {
    border-color: var(--color-theme-2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.hiw-sub-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    gap: 1rem;
}

.hiw-sub-title-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

.hiw-sub-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--color-text);
    border-radius: 50%;
    flex-shrink: 0;
    transition: background-color 0.3s ease;
}

.hiw-subcategory.open .hiw-sub-indicator {
    background-color: var(--color-theme-3);
}

.hiw-sub-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.hiw-subcategory.open .hiw-sub-title {
    color: var(--color-theme-3);
}

.hiw-sub-toggle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--color-slate-200);
    background-color: var(--color-white);
    color: var(--color-slate-500);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.2s ease;
    padding: 0;
}

.hiw-sub-toggle svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.hiw-subcategory.open .hiw-sub-toggle svg {
    transform: rotate(180deg);
}

.hiw-sub-toggle:hover {
    background-color: var(--color-slate-50);
    border-color: var(--color-theme-2);
    color: var(--color-theme-3);
}

.hiw-sub-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease;
    opacity: 0;
}

.hiw-subcategory.open .hiw-sub-content {
    max-height: 2000px;
    opacity: 1;
}

.hiw-sub-inner {
    padding-top: 1.25rem;
    margin-top: 1.25rem;
    border-top: 1px solid var(--color-slate-200);
}

/* ---- Content Elements inside sections ---- */
.hiw-points {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.hiw-numbered-list {
    padding-left: 1.5rem;
    margin: 0.75rem 0 1rem 0;
    color: var(--color-text);
    font-size: var(--text-base);
    line-height: 1.7;
}

.hiw-numbered-list li {
    margin-bottom: 0.75rem;
    padding-left: 0.25rem;
}

.hiw-sub-inner a,
.hiw-category-body a {
    color: var(--color-theme-3);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.hiw-sub-inner a:hover,
.hiw-category-body a:hover {
    opacity: 0.8;
}

.hiw-point {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.6;
}

.hiw-point:last-child {
    margin-bottom: 0;
}

.hiw-point-dot {
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    background-color: var(--color-theme-3);
    border-radius: 50%;
    margin-top: 0.5rem;
}

.hiw-text {
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.hiw-text:last-child {
    margin-bottom: 0;
}

/* Highlight / callout box */
.hiw-callout {
    padding: 1.25rem 1.5rem;
    background-color: var(--color-slate-50);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-theme-2);
    margin: 1rem 0;
}

.hiw-callout p {
    margin: 0;
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.6;
}

.hiw-callout strong {
    color: var(--color-theme-3);
}

/* Formula display */
.hiw-formula-block {
    padding: 1.5rem 2rem;
    background-color: var(--color-slate-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-slate-200);
    margin: 1.25rem 0;
    text-align: center;
}

.hiw-formula {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-theme-3);
    font-weight: 600;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.hiw-formula-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--color-slate-500);
}

.hiw-formula-legend span {
    white-space: nowrap;
}

/* Example box */
.hiw-example {
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, var(--color-slate-50) 0%, var(--color-white) 100%);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-slate-200);
    margin: 1.25rem 0;
}

.hiw-example-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-theme-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.hiw-example-steps {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hiw-example-step {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    font-size: var(--text-sm);
    border-bottom: 1px solid var(--color-slate-200);
}

.hiw-example-step:last-child {
    border-bottom: none;
    font-weight: 600;
    color: var(--color-theme-3);
}

.hiw-example-step span:last-child {
    font-weight: 600;
}

/* Inline sub-points (indented) */
.hiw-sub-points {
    list-style: none;
    padding-left: 1.5rem;
    margin: 0.5rem 0;
}

.hiw-sub-points .hiw-point {
    margin-bottom: 0.5rem;
}

.hiw-sub-points .hiw-point-dot {
    width: 5px;
    height: 5px;
    background-color: var(--color-slate-400);
}

/* Info cards grid (for grouped items like Case Concept contents) */
.hiw-info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin: 1rem 0;
}

.hiw-info-card {
    padding: 1.25rem;
    background-color: var(--color-slate-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-slate-200);
}

.hiw-info-card h5 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-theme-3);
    margin: 0 0 0.5rem 0;
}

.hiw-info-card p {
    font-size: 0.8rem;
    color: var(--color-text);
    margin: 0;
    line-height: 1.5;
}

/* Numbered steps (for 2FA flow etc) */
.hiw-numbered-steps {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin: 1rem 0;
}

.hiw-numbered-step {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.hiw-step-num {
    width: 28px;
    height: 28px;
    min-width: 28px;
    border-radius: 50%;
    background-color: var(--color-theme-3);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

.hiw-step-text {
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.6;
    padding-top: 0.25rem;
}

/* ---- Mobile TOC (fixed bottom, blog-style) ---- */
.hiw-mobile-toc {
    display: none;
}

.hiw-mobile-toc-card {
    border-radius: 20px 20px 0 0;
    overflow: hidden;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.15);
}

.hiw-mobile-toc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.15rem 1.5rem;
    background-color: var(--color-theme-3);
    border-radius: 20px 20px 0 0;
    cursor: pointer;
    gap: 1rem;
}

.hiw-mobile-toc-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    margin: 0;
    flex-shrink: 0;
}

.hiw-mobile-toc-active {
    display: none;
}

.hiw-mobile-toc-chevron {
    width: 22px;
    height: 22px;
    color: var(--color-white);
    flex-shrink: 0;
    transition: transform 0.3s ease;
    transform: rotate(180deg);
}

.hiw-mobile-toc-card.open .hiw-mobile-toc-chevron {
    transform: rotate(0deg);
}

.hiw-mobile-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    background-color: var(--color-white);
    transition: max-height 0.4s ease;
}

.hiw-mobile-toc-card.open .hiw-mobile-toc-list {
    max-height: 80vh;
}

.hiw-mobile-toc-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 1.25rem;
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: 400;
    border-bottom: 1px solid var(--color-slate-100);
    transition: all 0.2s ease;
}

.hiw-mobile-toc-link:last-child {
    border-bottom: none;
}

.hiw-mobile-toc-link:hover {
    background-color: var(--color-slate-50);
    text-decoration: none;
}

.hiw-mobile-toc-link.active {
    color: var(--color-theme-3);
    font-weight: 600;
}

.hiw-mobile-toc-num {
    display: inline-block;
    font-weight: 700;
    margin-right: 0.35rem;
    color: var(--color-theme-3);
    min-width: 1.1em;
}

.hiw-mobile-toc-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.hiw-mobile-toc-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

/* ---- Responsive ---- */
@media (min-width: 768px) {
    .hiw-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1023px) {
    .hiw-stepper {
        justify-content: flex-start;
        padding: 1.25rem 1rem;
    }

    .hiw-stepper-label {
        font-size: 0.55rem;
        max-width: 55px;
    }

    .hiw-stepper-circle {
        width: 30px;
        height: 30px;
        font-size: 0.65rem;
    }

    .hiw-stepper-line {
        width: 14px;
    }
}

@media (max-width: 767px) {
    /* Prevent horizontal scroll */
    html, body {
        overflow-x: hidden;
        max-width: 100vw;
    }

    /* Collapse header nav on mobile */
    .header {
        padding: 0.75rem 1rem;
    }

    .nav, .controls .language-selector {
        display: none;
    }

    .controls {
        gap: 0.5rem;
    }

    .controls .button-secondary,
    .controls .button-primary {
        font-size: 0.75rem;
        padding: 0.4rem 0.75rem;
    }

    /* Hide desktop stepper, show mobile TOC */
    .hiw-stepper-wrapper {
        display: none !important;
    }

    .hiw-mobile-toc {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 9999;
        padding: 0 0.75rem;
        padding-bottom: env(safe-area-inset-bottom, 0px);
    }

    .hiw-mobile-toc-overlay {
        display: block;
    }

    /* Page-level padding for mobile */
    .main-content {
        padding: 1.5rem 1.25rem;
        max-width: 100vw;
        overflow-x: hidden;
    }

    .hero-content {
        margin-bottom: 0.25rem;
        gap: 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    /* Bottom padding so content isn't hidden behind fixed TOC bar */
    .main-content::after {
        content: '';
        display: block;
        height: 60px;
    }

    /* Section sizing */
    .hiw-category {
        margin-bottom: 2rem;
        scroll-margin-top: 20px;
    }

    .hiw-category-header {
        gap: 0.75rem;
        margin-bottom: 1rem;
    }

    .hiw-category-num {
        width: 36px;
        height: 36px;
        min-width: 36px;
        font-size: 0.8rem;
    }

    .hiw-category-num svg.hiw-icon {
        width: 18px;
        height: 18px;
    }

    .hiw-category-title {
        font-size: 1.15rem;
    }

    .hiw-category-subtitle {
        font-size: 0.8rem;
    }

    /* Subcategory cards */
    .hiw-subcategory {
        padding: 1rem 1.15rem;
        margin-bottom: 0.75rem;
        scroll-margin-top: 20px;
        max-width: 100%;
    }

    .hiw-sub-header {
        gap: 0.5rem;
    }

    .hiw-sub-title-row {
        gap: 0.5rem;
    }

    .hiw-sub-title {
        font-size: 0.9rem;
    }

    .hiw-sub-toggle {
        width: 28px;
        height: 28px;
    }

    .hiw-sub-toggle svg {
        width: 14px;
        height: 14px;
    }

    .hiw-sub-inner {
        padding-top: 1rem;
        margin-top: 1rem;
    }

    /* Text and content */
    .hiw-text {
        font-size: 0.85rem;
        line-height: 1.65;
        margin-bottom: 0.75rem;
    }

    .hiw-point {
        gap: 0.5rem;
        margin-bottom: 0.6rem;
        font-size: 0.85rem;
    }

    .hiw-point-dot {
        margin-top: 0.45rem;
    }

    /* Callout */
    .hiw-callout {
        padding: 1rem 1.15rem;
    }

    .hiw-callout p {
        font-size: 0.85rem;
    }

    /* Formula block */
    .hiw-formula-block {
        padding: 1rem 1.15rem;
    }

    .hiw-formula {
        font-size: 0.8rem;
        line-height: 1.6;
    }

    .hiw-formula-legend {
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
        font-size: 0.7rem;
    }

    /* Example box */
    .hiw-example {
        padding: 1rem 1.15rem;
    }

    .hiw-example-step {
        flex-direction: column;
        gap: 0.15rem;
        align-items: flex-start;
        font-size: 0.85rem;
    }

    /* Info cards */
    .hiw-info-card {
        padding: 1rem;
    }

    .hiw-info-card h5 {
        font-size: 0.85rem;
    }

    .hiw-info-card p {
        font-size: 0.75rem;
    }

    /* Numbered steps */
    .hiw-step-num {
        width: 24px;
        height: 24px;
        min-width: 24px;
        font-size: 0.65rem;
    }

    .hiw-step-text {
        font-size: 0.85rem;
    }

    /* Sub-points */
    .hiw-sub-points {
        padding-left: 1rem;
    }

    /* Footer mobile fix */
    .footer {
        padding: 1rem 0.75rem;
    }

    .footer-nav {
        flex-wrap: wrap;
        gap: 0.25rem;
    }

    .footer-nav a {
        margin: 0 5px;
        font-size: 0.8rem;
    }

    .footer-copyright p {
        font-size: 0.6rem;
        word-break: break-word;
    }

    /* Contact section mobile */
    .contact-card {
        max-width: 100%;
    }

    .contact-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .contact-buttons a {
        text-align: center;
        font-size: 0.85rem;
    }

    /* Invest section mobile */
    .invest-links {
        word-break: break-word;
    }

    .invest-link {
        font-size: 0.75rem;
    }
}