/* gblane.github.io — shared styles */

:root {
    --bg:          #f9f8f5;
    --text:        #1a1a1a;
    --muted:       #6b6b6b;
    --accent:      #175676;
    --accent2:     #47682C;
    --border:      #e0dcd6;
    --card-bg:     #ffffff;
    --section-alt: #f2f0ec;

    /* Component-level vars that flip in dark mode */
    --navbar-bg:        #fff;
    --bio-text-color:   #333;
    --form-focus-bg:    #fff;
    --accent-hover:     #144060;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    padding-top: 60px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    line-height: 1.25;
}

/* ── Navbar ───────────────────────────────────────── */
/* Placeholder styling so the navbar area looks right before JS includes load */
[data-include="navbar"] {
    display: block;
    height: 60px;
    background: var(--navbar-bg);
    border-bottom: 1px solid var(--border);
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1030;
}

.navbar {
    background: var(--navbar-bg) !important;
    border-bottom: 1px solid var(--border);
    padding: 0.6rem 0;
}

.navbar-brand {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text) !important;
}

.nav-link {
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted) !important;
    padding: 0.4rem 0.8rem !important;
    transition: color 0.15s;
}

.nav-link:hover,
.nav-link.active { color: var(--accent) !important; }

.navbar-toggler { border-color: var(--border); }

/* Hamburger icon — stroke color flips in dark mode via --hamburger-stroke */
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(26,26,26,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Theme toggle button (in navbar) */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--muted);
    padding: 0.3rem 0.5rem;
    margin-left: 0.5rem;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle svg   { width: 14px; height: 14px; display: block; }

/* Default (light): show MOON (click to go dark) */
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }

/* ── Section helpers ──────────────────────────────── */
.section-eyebrow {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent2);
    margin-bottom: 6px;
}

.section-rule {
    width: 36px;
    height: 2px;
    background: var(--accent2);
    border: none;
    margin: 14px 0 28px;
}

.section-intro {
    max-width: 600px;
    color: var(--muted);
    font-size: 0.93rem;
    margin-bottom: 1.5rem;
}

/* ── Homepage section padding (alternating bg) ────── */
.home section { padding: 88px 0; }
.home section:nth-of-type(even) { background: var(--section-alt); }
.home #bio { padding-top: 72px; }

@media (max-width: 767px) {
    .home section { padding: 60px 0; }
    .home #bio { padding-top: 56px; }
}

/* ── Lab banner (homepage) ────────────────────────── */
.lab-banner {
    height: clamp(200px, 34vh, 340px);
    overflow: hidden;
}
.lab-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}
@media (max-width: 767px) {
    .lab-banner { height: clamp(140px, 28vw, 220px); }
}

/* ── Bio block (homepage) ─────────────────────────── */
.bio-text ul { font-size: 0.9rem; color: var(--muted); }

.bio-photo {
    width: clamp(72px, 12vw, 150px);
    height: clamp(72px, 12vw, 150px);
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
    flex-shrink: 0;
}

.bio-name {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.2rem;
}

.bio-subtitle {
    font-size: 0.92rem;
    color: var(--muted);
    line-height: 1.5;
    margin-bottom: 1.2rem;
}

.bio-link-inline {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s, color 0.15s;
}
.bio-link-inline:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.bio-text {
    font-size: 0.96rem;
    color: var(--bio-text-color);
    max-width: 560px;
    margin-bottom: 1.5rem;
}

.bio-links { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.bio-link {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 5px 13px;
    transition: border-color 0.15s, color 0.15s;
}
.bio-link:hover { border-color: var(--accent); color: var(--accent); }
.bio-link.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.bio-link.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }

/* ── Cards (research / teaching / tools grids) ────── */
.tool-link { text-decoration: none; color: inherit; display: block; height: 100%; }

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.35rem 1.5rem;
    height: 100%;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.tool-card:hover { border-color: var(--accent); box-shadow: 0 4px 18px rgba(23,86,118,0.08); }

.tool-name { font-family: 'Playfair Display', serif; font-size: 1rem; font-weight: 600; margin-bottom: 0.2rem; }
.tool-tags { font-size: 0.7rem; color: var(--accent); font-weight: 500; letter-spacing: 0.04em; margin-bottom: 0.5rem; }
.tool-desc { font-size: 0.83rem; color: var(--muted); line-height: 1.6; }
.tool-cta  { font-size: 0.75rem; font-weight: 500; color: var(--accent); margin-top: 0.9rem; }

.course-links { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.9rem; }
.course-links a { font-size: 0.75rem; font-weight: 500; color: var(--accent); text-decoration: none; }
.course-links a:hover { text-decoration: underline; }

/* ── Tool pages ───────────────────────────────────── */
.tool-header   { padding: 2rem 0 1.5rem; }
.tool-title    { font-size: 2rem; font-weight: 700; margin-bottom: 0.15rem; }
.tool-subtitle { font-size: 0.88rem; color: var(--muted); }

.param-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.25rem 1.4rem;
}

.param-label  { font-size: 0.85rem; font-weight: 500; color: var(--text); margin-bottom: 0.4rem; display: block; }
.param-value  { font-size: 0.8rem;  color: var(--muted); font-variant-numeric: tabular-nums; }
.param-unit   { font-weight: 400;   color: var(--muted); }

.about-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem 1.4rem;
    margin-top: 0.75rem;
}
.about-title {
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent2);
    margin-bottom: 0.4rem;
}
.about-text {
    font-size: 0.8rem;
    color: var(--muted);
    line-height: 1.55;
    margin: 0;
}

/* ── Form controls (tool pages) ───────────────────── */
.form-control,
.form-select {
    border-color: var(--border);
    border-radius: 4px;
    font-size: 0.88rem;
    background: var(--bg);
    color: var(--text);
}
.form-control:focus,
.form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(23,86,118,0.12);
    background: var(--form-focus-bg);
}

.form-range::-webkit-slider-thumb { background: var(--accent); }
.form-range::-moz-range-thumb     { background: var(--accent); border: none; }
.form-range:focus::-webkit-slider-thumb { box-shadow: 0 0 0 3px rgba(23,86,118,0.18); }

.btn-run {
    background: var(--accent);
    border: none;
    border-radius: 4px;
    color: #fff;
    font-size: 0.83rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    padding: 0.5rem 1rem;
    width: 100%;
    transition: background 0.15s;
    cursor: pointer;
}
.btn-run:hover { background: var(--accent-hover); }

.output-msg { font-size: 0.78rem; color: var(--muted); margin-top: 0.5rem; min-height: 1.2em; }

/* ── Plot container (Plotly target) ───────────────── */
#plot { border: 1px solid var(--border); border-radius: 6px; background: #fff; }

/* While Plotly is loading, reserve the box and show a hint */
#plot:empty::before {
    content: 'Loading plot…';
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--muted);
    font-size: 0.85rem;
}

/* ── Derived-values box (tool pages) ──────────────── */
.derived-box {
    background: var(--section-alt);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 0.75rem 1rem;
    margin-top: 1rem;
}
.derived-item { font-size: 0.82rem; color: var(--muted); margin-bottom: 0.15rem; }
.derived-item:last-child { margin-bottom: 0; }
.derived-val  { color: var(--text); font-weight: 500; }

/* ── Code blocks (tool implementation sections) ───── */
.code-wrap { position: relative; }

pre {
    background: var(--section-alt);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem 1.2rem;
    font-size: 0.78rem;
    line-height: 1.6;
    overflow-x: auto;
    margin: 0;
}
pre code { font-family: 'Courier New', monospace; color: var(--text); }

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 0.7rem;
    font-weight: 500;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 2px 8px;
    cursor: pointer;
    color: var(--muted);
    transition: background 0.12s, color 0.12s;
}
.copy-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── Info sections (tool & research pages) ───────── */
.info-section { margin-bottom: 3rem; }
.info-section h2 { font-size: 1.25rem; margin-bottom: 0.2rem; }

.info-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.25rem 1.5rem;
}
.info-card p {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 0.75rem;
}
.info-card p:last-child { margin-bottom: 0; }

/* ── Research pages: figures + footnotes ──────────── */
.research-figure { margin: 1.75rem 0; max-width: 640px; }
.research-figure img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid var(--border);
    border-radius: 4px;
}
.research-figure figcaption {
    font-size: 0.78rem;
    color: var(--muted);
    margin-top: 0.5rem;
    line-height: 1.5;
}

.fn-list { margin-top: 1.5rem; padding-left: 1.25rem; }
.fn-list li { font-size: 0.78rem; color: var(--muted); margin-bottom: 0.3rem; }
.fn-sup a {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.7em;
    vertical-align: super;
    line-height: 0;
}
.fn-sup a:hover { text-decoration: underline; }

/* ── Publications page ────────────────────────────── */
.pub-col-heading {
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.6rem;
}
.pub-row { padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.pub-row:last-child { border-bottom: none; }
.pub-title {
    font-family: 'Playfair Display', serif;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text);
}
.pub-authors { font-size: 0.7rem; color: var(--muted); margin-top: 0.15rem; }
.pub-meta    { font-size: 0.7rem; color: var(--muted); margin-top: 0.15rem; }
.pub-link    { color: var(--accent); text-decoration: none; }
.pub-link:hover { text-decoration: underline; }

.pub-col-divider { border-left: 1px solid var(--border); }

@media (max-width: 767px) {
    .pub-col-divider {
        border-left: none;
        border-top: 1px solid var(--border);
        padding-top: 2rem;
        margin-top: 1rem;
    }
}

.pub-refresh {
    background: none;
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--muted);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 3px 10px;
    cursor: pointer;
    margin-left: 0.6rem;
    transition: border-color 0.15s, color 0.15s;
}
.pub-refresh:hover { border-color: var(--accent); color: var(--accent); }

/* ── Footer ───────────────────────────────────────── */
footer { background: #28502E; color: #a8c4a0; padding: 1.75rem 0; font-size: 0.78rem; text-align: center; }
footer a { color: #c4d9bd; text-decoration: none; }
footer a:hover { color: #fff; }
.last-updated { font-size: 0.72rem; opacity: 0.75; margin-top: 0.4rem; }

/* ── Dark mode ─────────────────────────────────────
   Resolution order:
     1. [data-theme="light"] → force light (override OS)
     2. [data-theme="dark"]  → force dark  (override OS)
     3. (no attribute)       → follow OS via prefers-color-scheme

   Component-level vars (--navbar-bg, --bio-text-color, --form-focus-bg,
   --accent-hover) flip with the palette so most rules don't need overrides;
   only the hamburger-icon SVG needs an explicit override since data URIs
   can't be parameterised.
*/
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg:          #1a1a1a;
        --text:        #e8e6e0;
        --muted:       #989796;
        --accent:      #6fa8c8;
        --accent2:     #8aab66;
        --border:      #2e2c29;
        --card-bg:     #232220;
        --section-alt: #1f1e1c;
        --navbar-bg:        var(--card-bg);
        --bio-text-color:   var(--text);
        --form-focus-bg:    var(--bg);
        --accent-hover:     #5995b5;
    }
    :root:not([data-theme="light"]) .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(232,230,224,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    :root:not([data-theme="light"]) .theme-toggle .icon-sun  { display: block; }
    :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

:root[data-theme="dark"] {
    --bg:          #1a1a1a;
    --text:        #e8e6e0;
    --muted:       #989796;
    --accent:      #6fa8c8;
    --accent2:     #8aab66;
    --border:      #2e2c29;
    --card-bg:     #232220;
    --section-alt: #1f1e1c;
    --navbar-bg:        var(--card-bg);
    --bio-text-color:   var(--text);
    --form-focus-bg:    var(--bg);
    --accent-hover:     #5995b5;
}
[data-theme="dark"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(232,230,224,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* #plot stays white (hardcoded above) in both themes — better data legibility */