:root {
    --bg: #f9fafb;
    --bg-elevated: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --accent: #2563eb;
    --accent-soft: #eff6ff;
    --border-subtle: rgba(15, 23, 42, 0.06);
    --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.08);
    --radius-lg: 18px;
    --link-color: #0b7d35;
    /* rich forest green */
    --link-hover-color: #075b27;
    /* deeper shade on hover */
    --header-bg: rgba(249, 250, 251, 0.92);
    --mobile-nav-bg: rgba(249, 250, 251, 0.98);
}

[data-theme="dark"] {
    --bg: #0f172a;
    --bg-elevated: #1e293b;
    --text: #f3f4f6;
    --muted: #9ca3af;
    --accent: #60a5fa;
    --accent-soft: rgba(37, 99, 235, 0.15);
    --border-subtle: rgba(255, 255, 255, 0.1);
    --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.4);
    --link-color: #4ade80;
    --link-hover-color: #22c55e;
    --header-bg: rgba(15, 23, 42, 0.92);
    --mobile-nav-bg: rgba(15, 23, 42, 0.98);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family:
        "Inter",
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    color: var(--text);
    background-color: var(--bg);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

/* Header & navigation */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(14px);
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-subtle);
}

.nav {
    max-width: 960px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.site-title {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--text);
    white-space: nowrap;
}

.site-title {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--text);
    white-space: nowrap;
    text-decoration: none;
    /* remove underline for the title */
}

.site-title:hover,
.site-title:focus-visible {
    text-decoration: none;
    /* keep it off on hover/focus too */
    color: var(--text);
    /* optional: don’t change color */
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0;
    font-size: 0.95rem;
    text-decoration: none;
    color: var(--muted);
    letter-spacing: 0.02em;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.15rem;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent), #4f46e5);
    transform: scaleX(0);
    transform-origin: center;
    opacity: 0;
    transition:
        transform 160ms ease-out,
        opacity 160ms ease-out;
}

.nav-link:hover,
.nav-link:focus-visible {
    color: var(--text);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link--active::after {
    transform: scaleX(1);
    opacity: 1;
}

.nav-link--active {
    color: var(--text);
}

/* Mobile nav toggle */

.nav-toggle {
    display: none;
    border: 0;
    background: transparent;
    padding: 0.4rem;
    border-radius: 999px;
    cursor: pointer;
}

.nav-toggle-box {
    width: 1.25rem;
    height: 1.25rem;
    position: relative;
}

.nav-toggle-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 1.5px;
    border-radius: 999px;
    background: var(--text);
    transform-origin: center;
    transition:
        transform 200ms ease,
        opacity 200ms ease,
        top 200ms ease,
        bottom 200ms ease;
}

.nav-toggle-line:nth-child(1) {
    top: 0.2rem;
}

.nav-toggle-line:nth-child(2) {
    top: 0.6rem;
}

.nav-toggle-line:nth-child(3) {
    bottom: 0.2rem;
}

.nav.is-open .nav-toggle-line:nth-child(1) {
    top: 0.6rem;
    transform: rotate(45deg);
}

.nav.is-open .nav-toggle-line:nth-child(2) {
    opacity: 0;
}

.nav.is-open .nav-toggle-line:nth-child(3) {
    bottom: 0.6rem;
    transform: rotate(-45deg);
}

/* Page layout */

.page {
    max-width: 960px;
    margin: 0 auto;
    padding: 2.75rem 1.5rem 3.5rem;
}

/* small label above the page title, in normal case */
.page-kicker {
    font-size: 0.9rem;
    /* removed text-transform: uppercase; */
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 0.85rem;
}

.page-title {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    line-height: 1.12;
    letter-spacing: 0.01em;
    margin: 0;
}

.page-subtitle {
    max-width: 40rem;
    margin-top: 1rem;
    font-size: 1.05rem;
    color: var(--muted);
}

/* Sections */

.page-section {
    margin-bottom: 2.5rem;
    padding: 1.7rem 1.9rem;
    border-radius: var(--radius-lg);
    background-color: var(--bg-elevated);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(15, 23, 42, 0.03);
}

.section-title {
    margin: 0 0 1rem;
    font-size: 1.1rem;
    /* removed text-transform: uppercase; */
    letter-spacing: 0.03em;
    color: var(--text);
}

/* Sections: no bordered card by default */
.page-section {
    margin-bottom: 2.5rem;
    padding: 0;
    /* no inner padding from the card */
    border-radius: 0;
    background-color: transparent;
    box-shadow: none;
    border: 0;
    line-height: 1.5;
}

/* Keep the hero as a single soft card at the top */
.page-hero {
    margin-bottom: 2.75rem;
    padding: 1.7rem 1.9rem;
    border-radius: var(--radius-lg);
    background-color: var(--bg-elevated);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(15, 23, 42, 0.03);
}

/* Soft gradient overlay for the hero card */
.page-section--soft {
    background: radial-gradient(circle at top left,
            var(--accent-soft),
            var(--bg-elevated));
}

.page-section p:last-child {
    margin-bottom: 0;
}

.page-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.page-section ul {
    margin: 0.6rem 0 0.4rem 1.1rem;
    padding: 0;
    font-size: 0.98rem;
    line-height: 1.7;
}

.page-section li+li {
    margin-top: 0.35rem;
}

.highlight {
    font-weight: 600;
}

/* Dates */

.date-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.3fr);
    gap: 0.4rem 1.5rem;
    font-size: 0.98rem;
}

.date-grid dt {
    font-weight: 500;
}

.date-grid dd {
    margin: 0;
    color: var(--muted);
}

/* Committees */

.committee-role {
    font-weight: 600;
    margin-top: 1.1rem;
    margin-bottom: 0.4rem;
}

.page-section .committee-list {
    margin: 0;
    padding-left: 1.1rem;
    list-style: none;
}

.page-section .committee-list li {
    margin-bottom: 0.3rem;
}

.committee-affiliation {
    color: var(--muted);
}

/* Links */

a {
    color: var(--link-color);
    text-decoration-color: rgba(22, 53, 91, 0.5);
    /* subtle underline if used */
    text-underline-offset: 0.18em;
}

a:hover,
a:focus {
    color: var(--link-hover-color);
}

a:focus-visible {
    text-decoration-thickness: 2px;
}

/* Subtle animations */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-hero,
.page-section {
    animation: fadeInUp 360ms ease-out both;
}

.page-section:nth-of-type(2) {
    animation-delay: 80ms;
}

.page-section:nth-of-type(3) {
    animation-delay: 140ms;
}

.page-section:nth-of-type(4) {
    animation-delay: 200ms;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none;
        scroll-behavior: auto;
        transition: none;
    }
}

/* Responsive adjustments */

@media (max-width: 720px) {
    .nav {
        align-items: center;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        margin: 0;
        padding: 0.35rem 1.35rem 0.85rem;
        flex-direction: column;
        align-items: flex-start;
        background-color: var(--mobile-nav-bg);
        border-bottom: 1px solid var(--border-subtle);
        transform-origin: top;
        transform: scaleY(0.9);
        opacity: 0;
        pointer-events: none;
        transition:
            opacity 160ms ease-out,
            transform 160ms ease-out;
    }

    .nav.is-open .nav-links {
        opacity: 1;
        transform: scaleY(1);
        pointer-events: auto;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .page {
        padding-top: 2.25rem;
    }

    .page-section {
        padding: 1.3rem 1.35rem;
    }

    .date-grid {
        grid-template-columns: 1fr;
    }
}

/* Footer */

.site-footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem 2.4rem;
    line-height: 1.5;
    font-size: 0.85rem;
    color: var(--muted);
}

/* Theme toggle */
.theme-toggle {
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--muted);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, background-color 0.2s;
}

.theme-toggle:hover {
    color: var(--text);
    background-color: var(--border-subtle);
}

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Hide sun icon in light mode, hide moon icon in dark mode */
[data-theme="dark"] .icon-moon {
    display: none;
}

[data-theme="light"] .icon-sun,
:root:not([data-theme="dark"]) .icon-sun {
    display: none;
}