/**
 * v5-projects.css — shared overrides for the project pages (FA-26V5)
 *
 * Used by:
 *   - projects/projects.html          (top-level listing)
 *   - projects/project1.html          (Project 1 content)
 *   - projects/project2-systems.html  (Project 2 systems track)
 *   - projects/project2-science.html  (Project 2 science track)
 *   - projects/partnership-policy.html
 *
 * Activation: each page sets <body class="v5-projects">. Without that
 * class this file is inert.
 *
 * Scope: only the SHARED chrome (body, header, nav, H1/H2, common
 * containers and card/section surfaces). Page-specific layouts —
 * mission-briefing, faq-section, scoring-grid, dataset-grid,
 * good-bad-examples, etc. — are intentionally left alone so the
 * unique visual character of each project page survives the refresh.
 *
 * Loads after each page's existing inline <style>, so v5 tokens win
 * via source-order on equal specificity.
 */

body.v5-projects {
    font-family: var(--v5-sans) !important;
    background: var(--v5-bg) !important;
    color: var(--v5-text);
    -webkit-font-smoothing: antialiased;
    font-feature-settings: 'cv11', 'ss01';
}

/* ─────────────── Masthead (.header on projects.html, partnership-policy.html) */
body.v5-projects .header {
    background: var(--v5-bg) !important;
    color: var(--v5-ink) !important;
    border-bottom: 1px solid var(--v5-hairline);
    padding: 2rem 0 1.25rem;
    text-align: left;
    margin-bottom: 0;
}
body.v5-projects .header-content {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 2rem;
    position: static;
}
body.v5-projects .header .logo-main { display: none; }
body.v5-projects .header h1 {
    font-family: var(--v5-serif);
    font-weight: 500;
    font-size: clamp(2.25rem, 4.5vw, 3.5rem);
    line-height: 1;
    letter-spacing: -0.025em;
    color: var(--v5-ink);
    font-variation-settings: 'opsz' 144;
    background: none;
    -webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
}
body.v5-projects .header-subtitle {
    font-family: var(--v5-sans);
    font-size: 1.05rem;
    color: var(--v5-muted);
    margin-top: 0.5rem;
    opacity: 1;
}

/* ═══════════════════════════════════════════════════════
   NAV BAR — match index.html's .navbar look across all
   three structural variants found in the project pages:
     1. .nav-bar > .nav-container > .nav-tabs > .nav-tab   (projects/projects.html)
     2. .nav-bar > a                                       (project1, project2-science, partnership-policy)
     3. .top-nav > a                                       (project2-systems)
   All three render as: a 1320px-wide row with ink-coloured
   active link, 2px ink underline at bottom: -1px sitting
   on top of the parent's hairline border-bottom.
   ═══════════════════════════════════════════════════════ */

/* Outer nav element — same look for all three variants.
   Override !important on background/border so we beat the
   legacy .top-nav (slate card with shadow + gradient active)
   and .nav-bar (2px border, big gaps) rules cleanly. */
body.v5-projects .nav-bar,
body.v5-projects .top-nav {
    max-width: 1320px !important;
    margin: 0 auto 1.5rem !important;
    padding: 0 2rem !important;
    background: transparent !important;
    border: none !important;
    border-bottom: 1px solid var(--v5-hairline) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    height: auto;
    font-weight: 500;
}

/* Variant 1: projects/projects.html has an inner wrapper.
   display: contents lets the deeper anchors participate in
   the flex layout of the outer .nav-bar. */
body.v5-projects .nav-container,
body.v5-projects .nav-tabs {
    display: contents;
    max-width: none;
    margin: 0;
    padding: 0;
    list-style: none;
    background: transparent;
    box-shadow: none;
    border: none;
    height: auto;
    gap: 0;
}

/* Every anchor that appears inside the nav (any variant). */
body.v5-projects .nav-bar a,
body.v5-projects .top-nav a,
body.v5-projects .nav-tab {
    position: relative;
    font-family: var(--v5-sans);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--v5-muted) !important;
    padding: 0.85rem 0.85rem 0.95rem !important;
    text-decoration: none;
    display: inline-block;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    transition: color 0.15s;
}
body.v5-projects .nav-bar a:hover,
body.v5-projects .top-nav a:hover,
body.v5-projects .nav-tab:hover {
    color: var(--v5-ink) !important;
    background: transparent !important;
}
body.v5-projects .nav-bar a.active,
body.v5-projects .top-nav a.active,
body.v5-projects .nav-tab.active {
    color: var(--v5-ink) !important;
    background: transparent !important;
}

/* Active underline — 2px ink, sits at bottom: -1px so it
   covers the parent's hairline border (matches index.html). */
body.v5-projects .nav-bar a.active::after,
body.v5-projects .top-nav a.active::after,
body.v5-projects .nav-tab.active::after {
    content: '';
    position: absolute;
    left: 0.85rem; right: 0.85rem;
    bottom: -1px;
    height: 2px;
    background: var(--v5-ink);
    border-radius: 2px;
}

/* ─────────────── Page-content wrapper */
body.v5-projects .container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 1.5rem 2rem 3rem;
}

/* ─────────────── Page title (the first H1 inside the article body) */
body.v5-projects h1 {
    font-family: var(--v5-serif);
    font-weight: 500;
    font-size: clamp(2.25rem, 4.5vw, 3rem);
    line-height: 1.05;
    letter-spacing: -0.025em;
    color: var(--v5-ink);
    font-variation-settings: 'opsz' 144;
    background: none;
    -webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
}
body.v5-projects h2 {
    font-family: var(--v5-serif);
    font-weight: 500;
    font-size: 1.65rem;
    line-height: 1.15;
    letter-spacing: -0.015em;
    color: var(--v5-ink);
    font-variation-settings: 'opsz' 60;
    background: none;
    -webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
}
body.v5-projects h3 {
    font-family: var(--v5-sans);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--v5-ink);
}

/* ─────────────── Common card surfaces — soft refresh, don't restyle internals */
body.v5-projects .project-card,
body.v5-projects .project-section,
body.v5-projects .option-card {
    background: var(--v5-surface);
    border-radius: var(--v5-r);
    box-shadow: var(--v5-shadow-1);
    border: none;
}

/* Subtitle line under H1 (project1, project2-* pages) */
body.v5-projects .subtitle {
    font-family: var(--v5-sans);
    font-size: 1.05rem;
    color: var(--v5-muted);
}
