/* LikeFlow About Page Stylesheet
   Crafted for clean, authoritative, and scientific storytelling and company values.
   Strictly utilizes design tokens from tokens.css and site-canvas.css. */

.about-page .site-feature-canvas {
    background-color: var(--canvas);
}

/* --- Hero Section & Navigation Pills --- */
.about-hero {
    position: relative;
    max-width: var(--lf-content-max);
    margin: 0 auto;
    padding: calc(var(--space-26) + var(--space-26)) var(--lf-page-gutter) var(--space-10);
    text-align: center;
}

@media (min-width: 768px) {
    .about-hero {
        padding: calc(var(--space-26) + var(--space-26) + var(--space-6)) var(--lf-page-gutter-wide) var(--space-14);
    }
}

.about-hero__breadcrumb {
    display: flex;
    width: max-content;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin: 0 auto var(--space-5);
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    background: rgb(var(--ch-white) / var(--a-04));
    border: 1px solid rgb(var(--ch-white) / var(--a-08));
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.about-hero__breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--dur-base) ease;
}

.about-hero__breadcrumb a:hover {
    color: var(--text-primary);
}

.about-hero__breadcrumb .material-symbols-outlined {
    font-size: 16px;
    opacity: 0.6;
}

.about-hero__eyebrow {
    display: block;
    width: 100%;
    text-align: center;
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    color: var(--brand-blue-tint);
    margin: 0 auto var(--space-3);
    border: none !important;
    background: transparent !important;
    padding: 0 !important;
}

.about-hero h1 {
    font-family: 'Inter', sans-serif;
    font-size: var(--text-4xl);
    font-weight: var(--weight-black);
    letter-spacing: var(--tracking-tight);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    max-width: 1040px;
    margin: 0 auto var(--space-5);
    text-wrap: balance;
}

.about-hero__lead {
    font-size: clamp(var(--text-base), 2vw, var(--text-xl));
    line-height: var(--lf-leading-body);
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto var(--space-8);
    text-wrap: balance;
}

.about-hero__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-12);
}

/* Chapter Jump Navigation Pills */
.about-nav-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    max-width: 860px;
    margin: 0 auto;
    padding: var(--space-2);
    background: rgb(var(--ch-white) / var(--a-04));
    border: 1px solid rgb(var(--ch-white) / var(--a-08));
    border-radius: var(--radius-panel);
    backdrop-filter: blur(var(--blur-sm));
}

.about-nav-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    color: var(--text-secondary);
    text-decoration: none;
    transition: background var(--dur-base) ease, color var(--dur-base) ease;
}

.about-nav-pill:hover {
    background: rgb(var(--ch-white) / var(--a-08));
    color: var(--text-primary);
}

/* --- Section Containers & Headers --- */
.about-section {
    max-width: var(--lf-content-max);
    margin: 0 auto;
    padding: var(--space-16) var(--lf-page-gutter);
    border-top: 1px solid rgb(var(--ch-white) / var(--a-08));
    scroll-margin-top: var(--space-20);
}

@media (min-width: 768px) {
    .about-section {
        padding: var(--space-20) var(--lf-page-gutter-wide);
    }
}

.about-section__header {
    max-width: 720px;
    margin-bottom: var(--space-10);
}

.about-section__header--center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.about-section__tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    color: var(--brand-blue-tint);
    margin-bottom: var(--space-2);
}

.about-section__title {
    font-family: 'Inter', sans-serif;
    font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
    font-weight: var(--weight-black);
    letter-spacing: var(--tracking-tight);
    color: var(--text-primary);
    margin: 0 0 var(--space-3);
    text-wrap: balance;
}

.about-section__lead {
    font-size: var(--text-base);
    line-height: var(--lf-leading-body);
    color: var(--text-secondary);
    margin: 0;
    text-wrap: balance;
}

/* --- Section 1: Workflow Roadmap Pipeline --- */
.about-workflow-pipeline {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
    list-style: none;
    padding: 0;
    margin: 0;
}

@media (min-width: 768px) {
    .about-workflow-pipeline {
        grid-template-columns: repeat(3, 1fr);
    }
}

.about-workflow-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: var(--space-7);
    border-radius: var(--radius-card);
    background: rgb(var(--ch-surface-low) / var(--a-72));
    border: 1px solid rgb(var(--ch-white) / var(--a-08));
    backdrop-filter: blur(var(--blur-sm));
    transition: transform var(--dur-base) ease, border-color var(--dur-base) ease, box-shadow var(--dur-base) ease;
}

.about-workflow-card:hover {
    transform: translateY(-3px);
    border-color: rgba(var(--brand-blue-rgb), var(--a-42));
    box-shadow: 0 16px 36px rgba(0, 0, 0, var(--a-30)), 0 0 20px rgba(var(--brand-blue-rgb), var(--a-10));
}

.about-workflow-card__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
}

.about-workflow-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: rgba(var(--brand-blue-rgb), var(--a-18));
    border: 1px solid rgba(var(--brand-blue-rgb), var(--a-30));
    color: var(--brand-blue-tint);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    font-family: 'Inter', monospace;
}

.about-workflow-icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: rgba(var(--brand-blue-rgb), var(--a-12));
    border: 1px solid rgba(var(--brand-blue-rgb), var(--a-24));
    color: var(--brand-blue-tint);
}

.about-workflow-icon-box .material-symbols-outlined {
    font-size: 24px;
}

.about-workflow-card strong {
    font-family: 'Inter', sans-serif;
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.about-workflow-card span {
    font-size: var(--text-sm);
    line-height: var(--lf-leading-copy);
    color: var(--text-secondary);
}

/* --- Section 4: Values / Principles Grid --- */
.about-values-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-5);
}

@media (min-width: 640px) {
    .about-values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .about-values-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.about-value-item {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: var(--space-7);
    border-radius: var(--radius-card);
    background: rgb(var(--ch-surface-low) / var(--a-72));
    border: 1px solid rgb(var(--ch-white) / var(--a-08));
    backdrop-filter: blur(var(--blur-md));
    transition: transform var(--dur-base) ease, border-color var(--dur-base) ease, box-shadow var(--dur-base) ease;
}

.about-value-item:hover {
    transform: translateY(-3px);
    border-color: rgba(var(--brand-blue-rgb), var(--a-42));
    box-shadow: 0 16px 36px rgba(0, 0, 0, var(--a-30)), 0 0 20px rgba(var(--brand-blue-rgb), var(--a-10));
}

.about-value-item__icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(var(--brand-blue-rgb), var(--a-12));
    border: 1px solid rgba(var(--brand-blue-rgb), var(--a-24));
    color: var(--brand-blue-tint);
    margin-bottom: var(--space-5);
}

.about-value-item__icon-box .material-symbols-outlined {
    font-size: 24px;
}

.about-value-item h3 {
    font-family: 'Inter', sans-serif;
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    margin: 0 0 var(--space-2);
}

.about-value-item p {
    font-size: var(--text-sm);
    line-height: var(--lf-leading-copy);
    color: var(--text-secondary);
    margin: 0;
}

/* --- Section 5: Glass FAQ Accordion --- */
.about-faq-container {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.about-faq-item {
    border-radius: var(--radius-card);
    background: rgb(var(--ch-surface-low) / var(--a-62));
    border: 1px solid rgb(var(--ch-white) / var(--a-08));
    overflow: hidden;
    transition: border-color var(--dur-base) ease, background var(--dur-base) ease;
}

.about-faq-item:hover {
    border-color: rgb(var(--ch-white) / var(--a-18));
}

.about-faq-item[open] {
    background: rgb(var(--ch-surface-low) / var(--a-85));
    border-color: rgba(var(--brand-blue-rgb), var(--a-30));
}

.about-faq-item summary {
    position: relative;
    padding: var(--space-5) var(--space-6);
    padding-right: var(--space-12);
    font-size: var(--text-base);
    font-weight: var(--weight-bold);
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    list-style: none;
}

.about-faq-item summary::-webkit-details-marker {
    display: none;
}

.about-faq-item summary::after {
    content: '+';
    position: absolute;
    right: var(--space-6);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--text-lg);
    font-weight: var(--weight-medium);
    color: var(--text-secondary);
    transition: transform var(--dur-base) ease;
}

.about-faq-item[open] summary::after {
    content: '−';
}

.about-faq-item p {
    padding: 0 var(--space-6) var(--space-5);
    font-size: var(--text-sm);
    line-height: var(--lf-leading-body);
    color: var(--text-secondary);
    margin: 0;
}

/* --- Section 6: Closing CTA Card --- */
.about-cta-card {
    max-width: 820px;
    margin: var(--space-16) auto var(--space-20);
    padding: var(--space-12) var(--space-8);
    border-radius: var(--radius-panel);
    background:
        radial-gradient(ellipse 70% 60% at 50% 0%, rgba(var(--brand-blue-rgb), var(--a-14)), transparent 80%),
        rgb(var(--ch-surface-low) / var(--a-85));
    border: 1px solid rgb(var(--ch-white) / var(--a-12));
    text-align: center;
}

.about-cta-card h2 {
    font-family: 'Inter', sans-serif;
    font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl));
    font-weight: var(--weight-black);
    letter-spacing: var(--tracking-tight);
    color: var(--text-primary);
    margin: 0 0 var(--space-3);
    text-wrap: balance;
}

.about-cta-card p {
    font-size: var(--text-base);
    line-height: var(--lf-leading-copy);
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto var(--space-7);
    text-wrap: balance;
}

/* --- Shared Unified CTA Button --- */
.about-page .footer-start-free {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--lf-button-foreground) !important;
    background: var(--lf-button-bg) !important;
    border: 1px solid var(--lf-button-border) !important;
    border-radius: var(--radius-full) !important;
    font-size: var(--text-base) !important;
    font-weight: var(--weight-bold) !important;
    padding: var(--space-4) var(--space-8) !important;
    box-shadow: 0 10px 24px rgba(0, 0, 0, var(--a-24)) !important;
    text-decoration: none;
    transition: transform var(--dur-base) ease, box-shadow var(--dur-base) ease !important;
}

.about-page .footer-start-free:hover {
    color: var(--lf-button-foreground) !important;
    background: var(--lf-button-bg) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 14px 30px rgba(0, 0, 0, var(--a-24)), 0 0 16px rgba(var(--brand-blue-rgb), var(--a-14)) !important;
}