/* dissertation.css — long-form page for the dissertation summary.
   Shares the look of the home page (cloud gradient, Oswald + Roboto, coral
   accent, dark translucent cards) but allows vertical scrolling. The cloud
   canvas/fallback markup and clouds.js are reused verbatim from index.html. */

@import url(https://fonts.googleapis.com/css?family=Oswald:400,700,300);
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500&display=swap');

:root {
    --coral: #FF7F50;
    --coral-hot: #FF4500;
    --card: rgba(0, 0, 0, 0.7);
    --card-soft: rgba(0, 0, 0, 0.55);
    --hairline: rgba(255, 255, 255, 0.12);
}

* { box-sizing: border-box; }

body {
    font-family: 'Roboto', sans-serif;
    /* Same 7-stop sky as the home page, pinned to the viewport so it lines up
       with the fixed cloud canvas while the content scrolls over it. */
    background: linear-gradient(to bottom, #003A5D, #004E74, #00769B, #829EAD, #918E8F, #B18A76, #984D39) fixed;
    color: white;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--coral); text-decoration: none; }
a:hover { color: var(--coral-hot); }

/* ---- layout ---------------------------------------------------------- */
.page {
    position: relative;
    z-index: 2;
    max-width: 860px;
    margin: 0 auto;
    padding: 32px 30px 90px;
}

.back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95em;
    letter-spacing: 0.5px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 36px;
}
.back:hover { color: var(--coral); }

section { margin-top: 28px; }

/* ---- cards ----------------------------------------------------------- */
.card {
    background: var(--card);
    border: 1px solid var(--hairline);
    border-radius: 15px;
    padding: 44px 48px;
    box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.5);
}

/* ---- hero ------------------------------------------------------------ */
.hero .eyebrow {
    font-family: 'Oswald', sans-serif;
    font-weight: 400;
    font-size: 0.82em;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--coral);
    margin: 0 0 18px;
}

.hero h1 {
    font-family: 'Oswald', sans-serif;
    font-weight: 500;
    font-size: 2.7em;
    line-height: 1.12;
    margin: 0 0 10px;
}

.hero .subtitle {
    font-family: 'Oswald', sans-serif;
    font-weight: 300;
    font-size: 1.4em;
    line-height: 1.3;
    color: rgba(255, 255, 255, 0.82);
    margin: 0 0 28px;
}

.hero .lead {
    font-size: 1.12em;
    margin: 0;
}

.hero .lead + .lead { margin-top: 18px; }

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: 'Oswald', sans-serif;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.9em;
    padding: 13px 24px;
    border-radius: 50px;
    border: 1px solid var(--coral);
    transition: background-color 0.25s ease, color 0.25s ease, transform 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn--primary { background: var(--coral); color: #1a1a1a; }
.btn--primary:hover { background: var(--coral-hot); color: white; }

.btn--ghost { background: rgba(255, 127, 80, 0.12); color: white; }
.btn--ghost:hover { background: var(--coral-hot); color: white; }

/* ---- section headings ------------------------------------------------ */
h2 {
    font-family: 'Oswald', sans-serif;
    font-weight: 500;
    font-size: 1.7em;
    margin: 0 0 18px;
}

.section-label {
    font-family: 'Oswald', sans-serif;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    font-size: 0.78em;
    color: var(--coral);
    margin: 0 0 10px;
}

.card p { font-size: 1.06em; }
.card p:last-child { margin-bottom: 0; }

/* ---- pull quote ------------------------------------------------------ */
.quote {
    border-left: 3px solid var(--coral);
    padding: 4px 0 4px 24px;
    margin: 30px 0;
    font-family: 'Oswald', sans-serif;
    font-weight: 300;
    font-size: 1.45em;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.92);
}
.quote cite {
    display: block;
    font-family: 'Roboto', sans-serif;
    font-style: normal;
    font-size: 0.5em;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 14px;
}

/* ---- gaps grid ------------------------------------------------------- */
.grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-top: 22px;
}

.gap {
    background: var(--card-soft);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px 26px;
}
.gap h3 {
    font-family: 'Oswald', sans-serif;
    font-weight: 400;
    font-size: 1.12em;
    margin: 0 0 8px;
    color: var(--coral);
}
.gap p { margin: 0; font-size: 0.98em; line-height: 1.6; }

/* ---- systems --------------------------------------------------------- */
.system { margin-top: 20px; }
.system + .system { margin-top: 18px; }

.system .meta {
    font-family: 'Oswald', sans-serif;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-size: 0.72em;
    color: rgba(255, 255, 255, 0.55);
    margin: 0 0 10px;
}
.system .award { color: var(--coral); }

.system h3 {
    font-family: 'Oswald', sans-serif;
    font-weight: 500;
    font-size: 1.5em;
    margin: 0 0 4px;
}
.system .question {
    font-family: 'Oswald', sans-serif;
    font-weight: 300;
    font-style: italic;
    font-size: 1.12em;
    color: rgba(255, 255, 255, 0.8);
    margin: 0 0 16px;
}
.system p { margin: 0 0 0; }
.system .links { margin-top: 16px; font-size: 0.95em; }
.system .links a { margin-right: 18px; }

/* ---- dimensions ------------------------------------------------------ */
.dims {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 24px;
}
.dim {
    background: var(--card-soft);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 20px 22px;
}
.dim h3 {
    font-family: 'Oswald', sans-serif;
    font-weight: 400;
    font-size: 1.05em;
    margin: 0 0 6px;
    color: var(--coral);
}
.dim p { margin: 0; font-size: 0.92em; line-height: 1.55; color: rgba(255, 255, 255, 0.85); }

/* ---- footer ---------------------------------------------------------- */
.colophon {
    margin-top: 28px;
    font-size: 0.9em;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.7);
}
.colophon strong { color: rgba(255, 255, 255, 0.92); font-weight: 500; }

/* ---- responsive ------------------------------------------------------ */
@media (max-width: 720px) {
    .page { padding: 24px 16px 70px; }
    .card { padding: 30px 24px; }
    .hero h1 { font-size: 2.05em; }
    .hero .subtitle { font-size: 1.2em; }
    .grid { grid-template-columns: 1fr; }
    .dims { grid-template-columns: 1fr 1fr; }
    .quote { font-size: 1.25em; }
}

@media (max-width: 440px) {
    .dims { grid-template-columns: 1fr; }
    .actions .btn { width: 100%; justify-content: center; }
}

/* ---- cloud background (mirrors new-style.css) ------------------------ */
#cloudCanvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.6s ease;
}
#cloudCanvas.ready { opacity: 1; }

#cloudFallback {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    display: none;
}
html.clouds-fallback #cloudFallback { display: block; }

#cloudFallback .cloud-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background-image: url(/cloud.png);
    background-repeat: repeat-x;
    will-change: transform;
}
#cloudFallback .cloud-layer--far {
    background-size: 25% auto;
    background-position: center 30%;
    opacity: 0.28;
    animation: drift 160s linear infinite;
}
#cloudFallback .cloud-layer--near {
    background-size: 50% auto;
    background-position: center 55%;
    opacity: 0.45;
    animation: drift 90s linear infinite;
}
@keyframes drift {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
    #cloudCanvas { transition: none; }
    #cloudFallback .cloud-layer { animation: none; }
}