:root {
    --color-accent: #c9403f;
    --color-accent-dark: #a83332;
    --color-text: #2b2b2b;
    --color-muted: #5c5c5c;
    --color-bg: #ffffff;
    --color-bg-soft: #faf7f4;
    --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --font-sans: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --container-max: 1100px;
    --radius: 4px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-weight: 300;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }

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

h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.2;
    margin: 0 0 0.6em;
}

p { margin: 0 0 1em; }

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid #eee;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 70px;
}

.brand {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    color: var(--color-text);
    letter-spacing: 0.02em;
}
.brand-sub { color: var(--color-muted); font-style: italic; }
.brand:hover { text-decoration: none; }

.main-nav ul {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    gap: 2rem;
}

.main-nav a {
    color: var(--color-text);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.25rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s, color 0.2s;
}
.main-nav a:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: 0;
    width: 40px; height: 40px;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    display: block;
    height: 2px;
    background: var(--color-text);
    margin: 5px 0;
    transition: transform 0.2s;
}

/* Hero */
.hero {
    background:
        linear-gradient(rgba(0,0,0,0.35), rgba(0,0,0,0.55)),
        url('images/marjolein-kolkert-hero.jpg') center 30% / cover no-repeat;
    color: #fff;
    min-height: clamp(420px, 56vw, 720px);
    display: flex;
    align-items: flex-end;
}
.hero-inner { padding: 4rem 1.5rem 5rem; }

.hero-text h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: 0.2em;
    letter-spacing: 0.02em;
}
.hero-sub {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    margin-bottom: 2rem;
    opacity: 0.95;
}

.btn {
    display: inline-block;
    padding: 0.9rem 2rem;
    background: var(--color-accent);
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.85rem;
    font-weight: 700;
    border-radius: var(--radius);
    transition: background 0.2s, transform 0.2s;
}
.btn:hover {
    background: var(--color-accent-dark);
    text-decoration: none;
    transform: translateY(-1px);
}

/* Sections */
.section {
    padding: 5rem 0;
}
.section h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    text-align: center;
    margin-bottom: 2.5rem;
}
.section-accent {
    background: var(--color-accent);
    color: #fff;
}
.section-accent h2 { color: #fff; }
.section-accent a { color: #fff; text-decoration: underline; }

/* Agenda */
.agenda {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    max-width: 720px;
}
.agenda li {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-top: 1px solid rgba(255,255,255,0.25);
}
.agenda li:last-child { border-bottom: 1px solid rgba(255,255,255,0.25); }
.agenda-date {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 500;
}
.agenda-place {
    font-weight: 700;
    margin-bottom: 0.15rem;
}

/* Bio */
.bio-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 3.5rem;
    align-items: start;
}
.bio-photo img {
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}
.bio-text h2 { text-align: left; margin-bottom: 1.2rem; }

/* Contact */
.contact-inner { text-align: center; }
.contact-email {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    margin-top: 1.5rem;
}

/* Footer */
.site-footer {
    padding: 1.5rem 0;
    background: #1f1f1f;
    color: #bbb;
    text-align: center;
    font-size: 0.85rem;
}

/* Mobile */
@media (max-width: 780px) {
    .bio-grid { grid-template-columns: 1fr; gap: 2rem; }
    .bio-photo { max-width: 380px; margin: 0 auto; }
    .agenda li { grid-template-columns: 1fr; gap: 0.25rem; }

    .nav-toggle { display: block; }
    .main-nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        flex-direction: column;
        gap: 0;
        background: #fff;
        border-bottom: 1px solid #eee;
        padding: 0.5rem 0;
    }
    .main-nav ul.open { display: flex; }
    .main-nav li { text-align: center; }
    .main-nav a {
        display: block;
        padding: 0.9rem 1.5rem;
        border-bottom: 0;
    }
    .section { padding: 3.5rem 0; }
}