/* ================================================================
   billy's board — case study pages
   Shared stylesheet for work/*.html. Tokens mirror index.html.
   ================================================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg:            #fbfbf9;   /* canvas white */
    --text:          #1c1d21;   /* ink */
    --text-secondary:#4a4c53;
    --accent:        #2f54d1;   /* marker blue */
    --accent-bg:     rgba(47, 84, 209, 0.08);
    --hl:            rgba(245, 230, 66, 0.55); /* highlighter swipe */
    --muted:         #6b6d74;
    --rule:          #dfe0e2;
    --shadow:        rgba(30, 34, 60, 0.11);
}

html { scroll-behavior: smooth; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 2px;
}

.skip-link {
    position: absolute;
    top: -3rem;
    left: 1rem;
    z-index: 100;
    background: var(--text);
    color: #fff;
    padding: 0.55rem 0.9rem;
}

.skip-link:focus { top: 1rem; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

body {
    background-color: var(--bg);
    background-image: radial-gradient(circle, rgba(28,29,33,0.09) 1px, transparent 1px);
    background-size: 22px 22px;
    background-attachment: local;
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: 17px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ---- Back link ---- */

.back-link {
    display: inline-block;
    font-family: 'Caveat', cursive;
    font-size: 1.35rem;
    margin: 2rem 0 0;
    transform: rotate(-1deg);
}

/* ---- Case hero: a selected frame, like the homepage ---- */

.case-hero {
    margin: 3.5rem 0 4.5rem;
    position: relative;
}

.case-frame {
    border: 2px solid var(--accent);
    border-radius: 2px;
    position: relative;
    padding: 3rem 2.5rem 3.25rem;
    background: rgba(255, 255, 255, 0.55);
}

.frame-label {
    position: absolute;
    top: -1.7rem;
    left: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    color: var(--accent);
}

.case-frame .handle {
    position: absolute;
    width: 9px;
    height: 9px;
    background: #fff;
    border: 2px solid var(--accent);
}

.handle.tl { top: -6px;    left: -6px;  }
.handle.tr { top: -6px;    right: -6px; }
.handle.bl { bottom: -6px; left: -6px;  }
.handle.br { bottom: -6px; right: -6px; }

.case-title {
    font-family: 'Shantell Sans', cursive;
    font-weight: 700;
    font-size: clamp(2rem, 5.5vw, 3.4rem);
    line-height: 1.1;
    transform: rotate(-0.8deg);
    margin-bottom: 1.1rem;
}

.case-hook {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 620px;
    margin-bottom: 1.75rem;
}

.case-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    color: var(--muted);
}

.case-meta strong {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ---- Sections ---- */

.case-section { margin-bottom: 4.5rem; }

.section-label {
    font-family: 'Shantell Sans', cursive;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 1.75rem;
    display: inline-block;
    position: relative;
    transform: rotate(-0.8deg);
}

.section-label::before {
    content: '';
    position: absolute;
    left: -0.5rem;
    right: -0.75rem;
    top: 52%;
    height: 0.85em;
    background: var(--hl);
    transform: translateY(-42%) rotate(-0.6deg) skewX(-8deg);
    border-radius: 255px 15px 225px 15px / 15px 225px 15px 255px;
    z-index: -1;
}

.case-section p { margin-bottom: 1.2rem; }
.case-section p:last-child { margin-bottom: 0; }

/* ---- Role / decision evidence ---- */

.role-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin: -1.5rem 0 4.5rem;
    padding: 1.15rem 0.7rem 1rem;
    position: relative;
    background: #fffef5;
    box-shadow: 2px 4px 11px var(--shadow);
    transform: rotate(0.25deg);
}

.role-strip::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 46%;
    width: 70px;
    height: 15px;
    background: rgba(245, 240, 228, 0.88);
    border-top: 1px solid rgba(0,0,0,0.06);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transform: rotate(-2deg);
}

.role-item {
    padding: 0.35rem 1.1rem;
    border-left: 1px dashed var(--rule);
}

.role-item:first-child { border-left: 0; }

.role-label {
    display: block;
    font-family: 'Caveat', cursive;
    font-size: 1.12rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.15rem;
    transform: rotate(-0.6deg);
}

.role-value {
    display: block;
    font-size: 0.83rem;
    line-height: 1.45;
    color: var(--text-secondary);
}

.decision-trail {
    margin: 2rem 0;
    padding: 1.35rem 1.5rem;
    border-left: 4px solid var(--accent);
    background: var(--accent-bg);
}

.decision-trail h3 {
    font-family: 'Shantell Sans', cursive;
    font-size: 1.05rem;
    margin-bottom: 0.65rem;
}

.decision-trail p { margin-bottom: 0.65rem; }
.decision-trail p:last-child { margin-bottom: 0; }

/* ---- Big stat callout: marker writing ---- */

.stat-callout {
    text-align: center;
    margin: 2.5rem 0;
    transform: rotate(-1deg);
}

.stat-callout .stat-line {
    font-family: 'Shantell Sans', cursive;
    font-weight: 700;
    font-size: clamp(1.6rem, 4.5vw, 2.6rem);
    line-height: 1.25;
    color: var(--text);
}

.stat-callout .stat-line em {
    font-style: normal;
    color: var(--accent);
}

.stat-callout .stat-caption {
    font-family: 'Caveat', cursive;
    font-size: 1.2rem;
    color: var(--muted);
    margin-top: 0.4rem;
}

/* ---- Sticky notes (static clusters for findings) ---- */

.sticky-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0 0.5rem;
}

.sticky {
    padding: 1.2rem 1.3rem 1.6rem;
    background: linear-gradient(315deg, transparent 17px, var(--sticky-bg, #f5e642) 0);
    filter: drop-shadow(3px 5px 10px rgba(0,0,0,0.16)) drop-shadow(1px 2px 3px rgba(0,0,0,0.08));
    transform: rotate(var(--r, 0deg));
    position: relative;
}

.sticky::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 24px;
    height: 24px;
    background: var(--fold, rgba(0,0,0,0.13));
    clip-path: polygon(0 0, 100% 0, 0 100%);
    pointer-events: none;
}

.sticky-title {
    font-family: 'Caveat', cursive;
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.15;
    color: #1a1a1a;
    margin-bottom: 0.55rem;
}

.sticky p {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    line-height: 1.6;
    color: #2d2d2d;
    margin: 0;
}

/* per-sticky palettes (match homepage) */
.sticky.s-yellow { --sticky-bg: #f5e642; --fold: #d4c636; --r: -1.6deg; }
.sticky.s-orange { --sticky-bg: #f5a623; --fold: #d08d1e; --r:  1.2deg; }
.sticky.s-green  { --sticky-bg: #b8f0c8; --fold: #9ccbaa; --r: -0.9deg; }
.sticky.s-blue   { --sticky-bg: #b8d8f5; --fold: #9cb8d0; --r:  1.5deg; }
.sticky.s-purple { --sticky-bg: #d8b8f5; --fold: #b89cd0; --r: -1.2deg; }
.sticky.s-lemon  { --sticky-bg: #f5e878; --fold: #d4c866; --r:  0.9deg; }

/* ---- Index card (impact, quotes) ---- */

.index-card {
    background: #fff;
    padding: 1.75rem 1.9rem;
    box-shadow: 2px 3px 10px var(--shadow);
    position: relative;
    margin: 2rem 0;
    transform: rotate(-0.4deg);
}

.index-card .tape {
    position: absolute;
    top: -9px;
    left: 50%;
    transform: translateX(-50%) rotate(1.5deg);
    width: 64px;
    height: 14px;
    background: rgba(245, 240, 228, 0.8);
    border-top: 1px solid rgba(0,0,0,0.07);
    border-bottom: 1px solid rgba(0,0,0,0.07);
    pointer-events: none;
}

.index-card blockquote {
    font-family: 'Shantell Sans', cursive;
    font-weight: 500;
    font-size: 1.1rem;
    line-height: 1.5;
}

.index-card cite {
    display: block;
    margin-top: 0.6rem;
    font-family: 'JetBrains Mono', monospace;
    font-style: normal;
    font-size: 0.65rem;
    color: var(--muted);
}

/* ---- "shipped" flag: mini sticky ---- */

.shipped-flag {
    display: inline-block;
    background: #b8f0c8;
    color: #1a1a1a;
    font-family: 'Caveat', cursive;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 0.2rem 0.65rem 0.3rem;
    transform: rotate(-2deg);
    box-shadow: 1px 2px 5px rgba(0,0,0,0.16);
    margin-left: 0.5rem;
    vertical-align: middle;
}

/* ---- Hand-drawn table ---- */

.board-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.85rem;
}

.board-table caption {
    caption-side: bottom;
    font-family: 'Caveat', cursive;
    font-size: 1.1rem;
    color: var(--muted);
    padding-top: 0.6rem;
    text-align: right;
}

.board-table th {
    font-family: 'Shantell Sans', cursive;
    font-weight: 700;
    font-size: 0.85rem;
    text-align: left;
    padding: 0.5rem 0.75rem;
    border-bottom: 2.5px solid var(--text);
}

.board-table td {
    padding: 0.55rem 0.75rem;
    border-bottom: 1px dashed var(--rule);
    color: var(--text-secondary);
    vertical-align: top;
}

.board-table td:first-child { color: var(--text); font-weight: 500; }

/* ---- Study timeline (method sequences) ---- */

.study-list { list-style: none; margin: 1.5rem 0; }

.study-list li {
    display: flex;
    gap: 1rem;
    align-items: baseline;
    padding: 0.35rem 0;
    border-bottom: 1px dashed var(--rule);
}

.study-list .when {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    white-space: nowrap;
    min-width: 5.2rem;
}

.study-list .what { font-size: 0.9rem; }

/* ---- Artifact figure: a taped-down image from the actual deliverable ---- */

.artifact-figure {
    margin: 2.25rem auto;
    position: relative;
    transform: rotate(-0.5deg);
    max-width: 100%;
}

.artifact-figure.narrow { max-width: 480px; }

.artifact-figure img {
    display: block;
    width: 100%;
    height: auto;
    background: #fff;
    padding: 8px;
    border: 1px solid var(--rule);
    box-shadow: 3px 5px 14px var(--shadow);
}

.artifact-figure .tape {
    position: absolute;
    top: -9px;
    left: 50%;
    transform: translateX(-50%) rotate(-1.5deg);
    width: 68px;
    height: 15px;
    background: rgba(245, 240, 228, 0.85);
    border-top: 1px solid rgba(0,0,0,0.07);
    border-bottom: 1px solid rgba(0,0,0,0.07);
    z-index: 2;
}

.artifact-figure figcaption {
    font-family: 'Caveat', cursive;
    font-size: 1.2rem;
    color: var(--muted);
    text-align: center;
    margin-top: 0.6rem;
    transform: rotate(-0.4deg);
}

/* ---- Key insight annotation ---- */

.key-insight {
    font-family: 'Shantell Sans', cursive;
    font-weight: 500;
    font-size: 1.15rem;
    line-height: 1.55;
    max-width: 580px;
    margin: 2.5rem auto;
    text-align: center;
    transform: rotate(-0.6deg);
    color: var(--text);
}

.key-insight mark {
    background: var(--hl);
    padding: 0 0.2em;
    border-radius: 4px 10px 5px 8px;
}

/* ---- Footer / next nav ---- */

.case-footer {
    border-top: 1px solid var(--rule);
    margin-top: 5rem;
    padding: 2rem 0 3.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.case-footer .confidentiality {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.05em;
    color: var(--muted);
    max-width: 420px;
}

.next-case {
    font-family: 'Caveat', cursive;
    font-size: 1.4rem;
    transform: rotate(-1deg);
    white-space: nowrap;
}

/* ---- Responsive ---- */

@media (max-width: 640px) {
    .container { padding: 0 1.25rem; }
    .case-frame { padding: 2rem 1.4rem 2.25rem; }
    .case-hero { margin: 3rem 0 3.5rem; }
    .case-section { margin-bottom: 3.25rem; }
    .board-table { font-size: 0.78rem; }
    .board-table th, .board-table td { padding: 0.45rem 0.5rem; }
    .case-footer { flex-direction: column; align-items: flex-start; }
    .role-strip { grid-template-columns: 1fr; }
    .role-item { border-left: 0; border-top: 1px dashed var(--rule); padding: 0.8rem 0.6rem; }
    .role-item:first-child { border-top: 0; }
}

/* ================================================================
   DARK MODE — "after-hours board" (mirrors index.html)
   Canvas dims to night slate; ink and rules invert; marker-blue
   brightens. Sticky notes, tape, and the artifact matte stay light —
   physical paper on the board.
   ================================================================ */

@media (prefers-color-scheme: dark) {
    :root {
        --bg:             #16171b;   /* night-desk slate */
        --text:           #e9e9ec;   /* chalk ink */
        --text-secondary: #a6a8b0;
        --accent:         #86a0ff;   /* brightened marker blue */
        --accent-bg:      rgba(134, 160, 255, 0.13);
        --hl:             rgba(245, 230, 66, 0.30); /* highlighter glow */
        --muted:          #93959e;
        --rule:           #31333a;
        --shadow:         rgba(0, 0, 0, 0.55);
    }

    /* Ink dots become faint chalk on the night board */
    body {
        background-image: radial-gradient(circle, rgba(255,255,255,0.055) 1px, transparent 1px);
    }

    /* Keep the skip link legible now that --text is light */
    .skip-link { background: var(--accent); color: #14151a; }

    /* Selected case frame reads as a faint glass panel */
    .case-frame { background: rgba(255, 255, 255, 0.028); }

    /* Paper strips and index cards → elevated dark surfaces */
    .role-strip,
    .index-card { background: #212227; }

    /* Findings stickies lift against the dark board */
    .sticky {
        filter: drop-shadow(3px 6px 14px rgba(0,0,0,0.55)) drop-shadow(1px 2px 4px rgba(0,0,0,0.4));
    }
}