/* ============================================================
   Adam & v.Stuckrad GmbH – Statische Website
   ============================================================ */

/* ---------- Reset & Basis ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --color-primary:     #1e3a5f;
    --color-primary-dk:  #152a45;
    --color-accent:      #2d5a8e;
    --color-text:        #2c3e50;
    --color-text-lt:     #6b7c8a;
    --color-bg:          #f5f7fa;
    --color-white:       #ffffff;
    --color-border:      #e0e6ed;
    --color-link:        #2d5a8e;
    --color-link-hover:  #1e3a5f;
    --shadow-sm:         0 1px 3px rgba(0,0,0,.08);
    --shadow-md:         0 4px 12px rgba(0,0,0,.1);
    --radius:            6px;
    --max-width:         960px;
    --header-h:          70px;
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.65;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

a { color: var(--color-link); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-link-hover); text-decoration: underline; }

h1, h2, h3 { color: var(--color-primary); line-height: 1.3; margin-bottom: .75em; }
h1 { font-size: 2rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }
p  { margin-bottom: 1em; }

/* ---------- Header ---------- */
.site-header {
    background: #e6e4df;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-h);
    flex-wrap: wrap;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}
.logo:hover { text-decoration: none; color: var(--color-accent); }
.logo-sub { font-weight: 400; font-size: .85em; color: var(--color-text-lt); }

/* ---------- Navigation ---------- */
.main-nav ul {
    display: flex;
    gap: 6px;
    list-style: none;
}
.main-nav a {
    display: block;
    padding: 8px 14px;
    border-radius: var(--radius);
    font-weight: 500;
    color: var(--color-text);
}
.main-nav a:hover { background: var(--color-bg); color: var(--color-primary); text-decoration: none; }
.main-nav a.active { background: var(--color-primary); color: #fff; }

/* Hamburger (mobile) */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    flex-direction: column;
    gap: 5px;
}
.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Main ---------- */
.site-main { flex: 1; padding: 40px 0 60px; }

.hero { text-align: center; padding: 20px 20px 30px; }
.hero h1 { font-size: 2.4rem; margin-bottom: .3em; }
.hero-sub { font-size: 1.1rem; color: var(--color-text-lt); }

.intro {
    background: var(--color-white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 30px;
}
.intro-signature {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.actions { text-align: center; padding: 10px 0 20px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all .2s;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover {
    background: var(--color-accent);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ---------- Footer ---------- */
.site-footer {
    background: var(--color-primary-dk);
    color: rgba(255,255,255,.85);
    padding: 20px 0;
    margin-top: auto;
}
.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
}
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; justify-content: center; }
.footer-nav a { color: rgba(255,255,255,.85); font-size: .95rem; }
.footer-nav a:hover { color: #fff; }
.back-to-top { color: rgba(255,255,255,.6); font-size: .85rem; }
.back-to-top:hover { color: #fff; }
.copyright { font-size: .85rem; color: rgba(255,255,255,.6); }

/* ---------- Content-Seiten (Impressum, Datenschutz) ---------- */
.page-content {
    background: var(--color-white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    line-height: 1.7;
}
.page-content h1 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-border);
}
.page-content h2 { font-size: 1.3rem; margin-top: 30px; margin-bottom: 12px; }
.page-content h3 { font-size: 1.1rem; margin-top: 20px; margin-bottom: 8px; }
.page-content ul { margin: 10px 0 15px 25px; }
.page-content li { margin-bottom: 4px; }
.page-content .source { font-size: .9rem; color: var(--color-text-lt); font-style: italic; }

/* ---------- Kontakt ---------- */
.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 25px;
}
.kontakt-info { display: flex; flex-direction: column; gap: 14px; }
.kontakt-item { display: flex; gap: 12px; align-items: baseline; }
.kontakt-label { font-weight: 600; min-width: 80px; color: var(--color-primary); }
.kontakt-map iframe {
    width: 100%;
    height: 320px;
    border: 0;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.wegbeschreibung-text { font-style: italic; color: var(--color-text-lt); }

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .header-inner { flex-direction: column; gap: 10px; padding: 15px 20px; }
    .nav-toggle { display: flex; }
    .main-nav { width: 100%; display: none; }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; gap: 4px; }
    .main-nav a { padding: 10px 14px; }
    .hero h1 { font-size: 1.8rem; }
    .kontakt-grid { grid-template-columns: 1fr; }
    .intro, .page-content { padding: 20px; }
}

@media (max-width: 480px) {
    h1 { font-size: 1.5rem; }
    .hero h1 { font-size: 1.6rem; }
    .btn { width: 100%; justify-content: center; }
    .footer-nav { flex-direction: column; gap: 8px; }
    .kontakt-item { flex-direction: column; gap: 2px; }
}