/* Dark theme — shared by every page.
   theme.js sets data-theme on <html> before first paint. :root[data-theme]
   outranks each page's own :root block, so the palette swaps everywhere. */

:root[data-theme="dark"] {
    --text-primary: #ecebe7;
    --text-secondary: #a9a7a1;
    --text-tertiary: #6f6d68;
    --border: #2b2a27;
    --bg: #141413;
    --bg-secondary: #1c1b19;
    --accent: #ecebe7;
    color-scheme: dark;
}

/* Pages hard-code these, so they need their own overrides */
:root[data-theme="dark"] nav {
    background: rgba(20, 20, 19, 0.85);
}

:root[data-theme="dark"] .box,
:root[data-theme="dark"] .note {
    background-color: var(--bg-secondary);
}

:root[data-theme="dark"] .device-phone {
    box-shadow: 0 24px 48px -16px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.1);
}

/* Soften bright screenshots and figures a touch on a dark page */
:root[data-theme="dark"] .project-media img,
:root[data-theme="dark"] .figure img {
    filter: brightness(0.92);
}

/* Fade colours only while switching, so page loads stay instant */
.theme-switching,
.theme-switching * {
    transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease !important;
}

/* Nav toggle: an icon that sits with the links */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    padding: 0;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.theme-toggle:hover {
    color: var(--text-primary);
    transform: rotate(-20deg);
}

.theme-toggle:focus-visible {
    outline: 1px solid var(--text-primary);
    outline-offset: 3px;
    border-radius: 50%;
}

.theme-toggle svg {
    width: 1rem;
    height: 1rem;
}

.nav-links li.theme-item {
    display: flex;
    align-items: center;
}

/* Six nav items on a phone: tighten spacing so they fit in one row */
@media (max-width: 768px) {
    .nav-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }
}