/* ET StromFluss GmbH — shared stylesheet for content pages (Phase 2)
   Reuses the design tokens and component patterns from the homepage (index.html)
   so new pages read as part of the same site rather than a bolted-on template. */

:root {
    --pri: #1a5cf0;
    --pri-dark: #0f3dc0;
    --pri-light: #eef3ff;
    --dark: #0c1424;
    --txt: #1b2436;
    --txt2: #4f5b6e;
    --txt3: #8793a6;
    --white: #ffffff;
    --bg: #f5f6f9;
    --bg2: #fafbfc;
    --border: #e2e6ed;
    --border2: #eef0f5;
    --sh-sm: 0 2px 10px rgba(12, 20, 36, 0.04), 0 1px 3px rgba(12, 20, 36, 0.03);
    --sh-md: 0 8px 26px rgba(12, 20, 36, 0.06), 0 3px 8px rgba(12, 20, 36, 0.03);
    --r-sm: 10px;
    --r-md: 16px;
    --r-lg: 24px;
    --r-full: 9999px;
    --tf: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --fs: system-ui, -apple-system, 'Segoe UI', Roboto, 'Inter', sans-serif;
    --mw: 1200px;
    --hh: 72px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--fs);
    color: var(--txt);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--pri); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: var(--mw); margin: 0 auto; padding: 0 20px; }

/* Skip link for accessibility */
.skip-link {
    position: absolute; left: -9999px; top: 0; z-index: 999;
    background: var(--pri); color: #fff; padding: 10px 16px; border-radius: var(--r-sm);
}
.skip-link:focus { left: 12px; top: 12px; }

/* Header (mirrors index.html) */
.header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,0.92); backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border);
}
.hdr-in { display: flex; align-items: center; justify-content: space-between; height: var(--hh); gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--dark); }
.logo-svg { width: 30px; height: 30px; flex-shrink: 0; }
.logo-txt { display: flex; flex-direction: column; line-height: 1.15; }
.logo-n { font-size: 1rem; }
.logo-c { font-size: 0.72rem; color: var(--txt3); font-weight: 500; }
.nav { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.nav a { color: var(--txt2); font-weight: 600; font-size: 0.92rem; }
.nav a.act, .nav a:hover { color: var(--pri); text-decoration: none; }
.hdr-act { display: flex; align-items: center; gap: 12px; }
.hdr-phone { font-weight: 700; color: var(--dark); white-space: nowrap; }
@media (max-width: 900px) {
    .nav { display: none; }
    .hdr-phone { display: none; }
}

/* Buttons (same classes as homepage) */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 20px; border-radius: var(--r-full); font-weight: 700; font-size: 0.92rem;
    border: 2px solid transparent; cursor: pointer; transition: var(--tf); white-space: nowrap;
}
.btn-pr { background: var(--pri); color: #fff; }
.btn-pr:hover { background: var(--pri-dark); text-decoration: none; }
.btn-out { border-color: var(--pri); color: var(--pri); background: transparent; }
.btn-out:hover { background: var(--pri-light); text-decoration: none; }
.btn-sm { padding: 9px 16px; font-size: 0.85rem; }
.btn-lg { padding: 15px 26px; font-size: 1rem; }

/* Breadcrumb */
.crumbs { font-size: 0.85rem; color: var(--txt3); padding: 18px 0 0; }
.crumbs a { color: var(--txt3); }
.crumbs a:hover { color: var(--pri); }
.crumbs span[aria-current] { color: var(--txt2); font-weight: 600; }

/* Page hero */
.page-hero { padding: 28px 0 40px; }
.page-hero .lbl {
    display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.03em;
    text-transform: uppercase; color: var(--pri); background: var(--pri-light);
    padding: 5px 12px; border-radius: var(--r-full); margin-bottom: 14px;
}
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.2; margin: 0 0 14px; color: var(--dark); }
.page-hero .lead { font-size: 1.08rem; color: var(--txt2); max-width: 780px; margin: 0 0 20px; }
.page-hero .cta-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* Content sections */
.sec { padding: 40px 0; }
.sec.bg-w { background: var(--white); }
.sec-hd h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 8px; color: var(--dark); }
.sec-hd p { color: var(--txt2); max-width: 720px; }
.sec-hd .lbl {
    display: inline-block; font-size: 0.76rem; font-weight: 700; letter-spacing: 0.03em;
    text-transform: uppercase; color: var(--pri); margin-bottom: 8px;
}
h2, h3 { color: var(--dark); }
.prose p { margin: 0 0 14px; color: var(--txt2); }
.prose ul { margin: 0 0 14px; padding-left: 1.2em; color: var(--txt2); }
.prose li { margin-bottom: 6px; }

/* Card grid */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; margin-top: 22px; }
.card {
    background: var(--white); border: 1px solid var(--border2); border-radius: var(--r-md);
    padding: 22px; box-shadow: var(--sh-sm); transition: var(--tf);
}
.card:hover { box-shadow: var(--sh-md); }
.card h3 { font-size: 1.08rem; margin: 0 0 8px; }
.card p { color: var(--txt2); font-size: 0.92rem; margin: 0 0 12px; }
.card ul { padding-left: 1.1em; color: var(--txt2); font-size: 0.9rem; margin: 0 0 12px; }

/* Note / disclaimer box (used on PV-Mining page) */
.note-box {
    background: var(--pri-light); border: 1px solid var(--border); border-radius: var(--r-md);
    padding: 18px 20px; margin: 20px 0; font-size: 0.92rem; color: var(--txt2);
}
.note-box strong { color: var(--dark); }

/* Contact CTA band */
.cta-band { background: var(--dark); color: #fff; padding: 44px 0; text-align: center; }
.cta-band h2 { color: #fff; margin: 0 0 10px; }
.cta-band p { color: #c7cede; margin: 0 0 20px; }
.cta-band .cta-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

/* Region list */
.region-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-top: 20px; }
.region-card { background: var(--white); border: 1px solid var(--border2); border-radius: var(--r-md); padding: 18px; }
.region-card h3 { font-size: 1rem; margin: 0 0 6px; }
.region-card p { font-size: 0.86rem; color: var(--txt2); margin: 0; }

/* Footer (mirrors index.html) */
.footer { background: var(--white); border-top: 1px solid var(--border); padding: 40px 0 0; margin-top: 40px; }
.footer h4 { font-size: 0.84rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--txt3); margin: 0 0 10px; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 6px; font-size: 0.9rem; }
.footer a { color: var(--txt2); }
.footer-g { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: clamp(14px, 2vw, 24px); margin-bottom: 20px; padding-top: 30px; }
.footer-b { border-top: 1px solid var(--border2); padding: 16px 0; font-size: 0.76rem; color: var(--txt3); text-align: center; }
address { font-style: normal; }
@media (max-width: 768px) {
    .footer-g { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 430px) {
    .footer-g { grid-template-columns: 1fr; }
    .page-hero .cta-row, .cta-band .cta-row { flex-direction: column; align-items: stretch; }
    .btn { width: 100%; }
}

/* Mobile sticky action bar (mirrors index.html's .mob-bar) */
.mob-bar {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 40;
    display: none; gap: 8px; padding: 10px 14px; background: #fff;
    border-top: 1px solid var(--border); box-shadow: 0 -4px 14px rgba(12,20,36,0.06);
}
@media (max-width: 640px) {
    .mob-bar { display: flex; }
    body { padding-bottom: 64px; }
}