/* YardageCalc — Field Blueprint & Precision Instrument Design
   100% selbst gehostet, keine externen Schriften, Hell-/Dunkelmodus, Druckansicht. */

:root {
  color-scheme: light dark;
  --bg: #f6f5f0;
  --bg-elev: #ffffff;
  --bg-subtle: #eceae1;
  --bg-blueprint: #0f2537;
  --fg-blueprint: #e6f1ff;
  --grid-blueprint: rgba(125, 189, 255, 0.14);
  --accent-blueprint: #f59e0b;
  --fg: #14181d;
  --fg-muted: #525b65;
  --border: #d5d2c6;
  --border-strong: #a8a393;
  --accent: #b45309;
  --accent-fg: #ffffff;
  --accent-soft: #fef3c7;
  --good: #15803d;
  --good-bg: #dcfce7;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0c1015;
  --bg-elev: #141b23;
  --bg-subtle: #1b2430;
  --bg-blueprint: #081521;
  --fg-blueprint: #e6f1ff;
  --grid-blueprint: rgba(125, 189, 255, 0.12);
  --accent-blueprint: #fbbf24;
  --fg: #ebeef2;
  --fg-muted: #9ba5b1;
  --border: #283342;
  --border-strong: #415166;
  --accent: #f59e0b;
  --accent-fg: #0c1015;
  --accent-soft: rgba(245, 158, 11, 0.16);
  --good: #4ade80;
  --good-bg: rgba(34, 197, 94, 0.15);
  --warn: #fbbf24;
  --warn-bg: rgba(245, 158, 11, 0.15);
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bg: #0c1015;
    --bg-elev: #141b23;
    --bg-subtle: #1b2430;
    --bg-blueprint: #081521;
    --fg-blueprint: #e6f1ff;
    --grid-blueprint: rgba(125, 189, 255, 0.12);
    --accent-blueprint: #fbbf24;
    --fg: #ebeef2;
    --fg-muted: #9ba5b1;
    --border: #283342;
    --border-strong: #415166;
    --accent: #f59e0b;
    --accent-fg: #0c1015;
    --accent-soft: rgba(245, 158, 11, 0.16);
    --good: #4ade80;
    --good-bg: rgba(34, 197, 94, 0.15);
    --warn: #fbbf24;
    --warn-bg: rgba(245, 158, 11, 0.15);
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  }
}

@view-transition { navigation: auto; }
::view-transition-old(root) { animation: yc-fade-out 0.3s ease forwards; }
::view-transition-new(root) { animation: yc-fade-in 0.3s ease forwards; }
@keyframes yc-fade-out { to { opacity: 0; } }
@keyframes yc-fade-in { from { opacity: 0; } }

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); font-family: var(--font-sans); line-height: 1.55; -webkit-text-size-adjust: 100%; overflow-x: hidden; }
a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
a:hover { opacity: 0.88; }

.container { max-width: 1220px; margin: 0 auto; padding: 0 16px; width: 100%; }

/* ── Header & Tool Navigation ── */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg-elev); position: sticky; top: 0; z-index: 30; }
.header-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; font-size: 1.12rem; color: var(--fg); text-decoration: none; letter-spacing: -0.02em; }
.brand svg { width: 24px; height: 24px; color: var(--accent); flex-shrink: 0; }
.brand-tag { font-size: 0.72rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; padding: 2px 6px; border-radius: 4px; background: var(--bg-subtle); color: var(--fg-muted); font-weight: 600; }

.header-controls { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.btn-chip { display: inline-flex; align-items: center; gap: 5px; background: var(--bg-subtle); color: var(--fg); border: 1px solid var(--border); border-radius: 6px; padding: 5px 10px; font: inherit; font-size: 0.8rem; font-weight: 600; cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn-chip:hover { border-color: var(--border-strong); }
.btn-chip[aria-pressed="true"], .btn-chip.active { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }

.tool-nav { display: flex; gap: 5px; overflow-x: auto; padding: 8px 0 10px; border-top: 1px solid var(--border); scrollbar-width: thin; }
.tool-nav a { display: inline-flex; align-items: center; gap: 5px; padding: 5px 10px; border-radius: 6px; font-size: 0.82rem; font-weight: 600; text-decoration: none; color: var(--fg-muted); background: transparent; border: 1px solid transparent; white-space: nowrap; flex-shrink: 0; }
.tool-nav a:hover { background: var(--bg-subtle); color: var(--fg); }
.tool-nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.tool-nav svg { width: 15px; height: 15px; flex-shrink: 0; }

/* ── Hero ── */
.hero { padding: 20px 0 14px; }
.hero h1 { font-size: clamp(1.35rem, 2.6vw, 2rem); line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.02em; }
.hero p.lead { margin: 0; color: var(--fg-muted); max-width: 840px; font-size: 0.96rem; }

/* ── Presets Bar ── */
.presets-bar { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; margin: 12px 0 16px; }
.presets-label { font-size: 0.76rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--fg-muted); font-weight: 700; }
.preset-btn { background: var(--bg-elev); color: var(--fg); border: 1px solid var(--border); border-radius: 999px; padding: 4px 11px; font: inherit; font-size: 0.8rem; cursor: pointer; transition: border-color 0.15s, background 0.15s; }
.preset-btn:hover { border-color: var(--accent); background: var(--accent-soft); }

/* ── Main Workbench Grid ── */
.workbench { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr); gap: 18px; align-items: start; margin-bottom: 28px; }
@media (max-width: 920px) {
  .workbench { grid-template-columns: minmax(0, 1fr); }
}

.panel { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); min-width: 0; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.panel-title { font-size: 0.96rem; font-weight: 700; margin: 0; display: inline-flex; align-items: center; gap: 7px; }
.panel-title svg { width: 18px; height: 18px; color: var(--accent); }

/* ── Form Controls ── */
.field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; margin-bottom: 14px; }
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field label { font-size: 0.76rem; font-weight: 600; color: var(--fg-muted); }
.field input, .field select { width: 100%; padding: 7px 9px; font: inherit; font-size: 0.9rem; color: var(--fg); background: var(--bg); border: 1px solid var(--border); border-radius: 6px; font-variant-numeric: tabular-nums; min-width: 0; }
.field input:focus, .field select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }

/* ── Multi-Zone List ── */
.zones-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.zone-card { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 11px; }
.zone-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.zone-name-input { font: inherit; font-size: 0.86rem; font-weight: 700; color: var(--fg); background: transparent; border: 1px dashed var(--border-strong); border-radius: 5px; padding: 3px 7px; min-width: 140px; flex: 1; }
.zone-shape-select { font: inherit; font-size: 0.8rem; color: var(--fg); background: var(--bg-elev); border: 1px solid var(--border); border-radius: 5px; padding: 3px 7px; }
.zone-remove { background: transparent; border: 1px solid var(--border); color: var(--fg-muted); border-radius: 5px; padding: 3px 8px; font: inherit; font-size: 0.76rem; cursor: pointer; }
.zone-remove:hover { color: #dc2626; border-color: #dc2626; }
.zone-inputs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
@media (max-width: 560px) {
  .zone-inputs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.zone-foot { margin-top: 6px; font-size: 0.76rem; font-family: var(--font-mono); color: var(--fg-muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px; }

.btn-add-zone { width: 100%; padding: 8px 12px; background: var(--bg-subtle); color: var(--fg); border: 1px dashed var(--border-strong); border-radius: 7px; font: inherit; font-size: 0.85rem; font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.btn-add-zone:hover { border-color: var(--accent); color: var(--accent); }

/* ── Results & KPI Cards ── */
.kpi-hero { background: var(--accent-soft); border: 1px solid var(--accent); border-radius: 9px; padding: 14px 16px; margin-bottom: 12px; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.kpi-hero-main { display: flex; flex-direction: column; }
.kpi-hero-label { font-size: 0.75rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em; color: var(--fg-muted); font-weight: 700; }
.kpi-hero-val { font-size: clamp(1.65rem, 3.2vw, 2.35rem); font-weight: 800; font-family: var(--font-mono); color: var(--fg); line-height: 1.15; }
.kpi-hero-sub { font-size: 0.85rem; color: var(--fg-muted); font-family: var(--font-mono); }

.kpi-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 14px; }
@media (max-width: 440px) {
  .kpi-grid { grid-template-columns: minmax(0, 1fr); }
}
.kpi-card { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; min-width: 0; }
.kpi-label { font-size: 0.74rem; color: var(--fg-muted); font-weight: 600; margin-bottom: 2px; }
.kpi-val { font-size: 1.2rem; font-weight: 800; font-family: var(--font-mono); color: var(--fg); }
.kpi-note { font-size: 0.75rem; color: var(--fg-muted); margin-top: 2px; }

/* ── Blueprint SVG Stage ── */
.blueprint-stage { background: var(--bg-blueprint); color: var(--fg-blueprint); border-radius: 9px; padding: 12px; margin-bottom: 14px; border: 1px solid #1e3a5f; position: relative; overflow: hidden; }
.blueprint-bar { display: flex; justify-content: space-between; align-items: center; font-family: var(--font-mono); font-size: 0.72rem; color: #93c5fd; margin-bottom: 6px; letter-spacing: 0.04em; text-transform: uppercase; flex-wrap: wrap; gap: 6px; }
.blueprint-svg-wrap { width: 100%; display: flex; justify-content: center; align-items: center; }
.blueprint-svg-wrap svg { width: 100%; max-width: 480px; height: auto; display: block; }

/* ── Cost Comparison Box ── */
.compare-box { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-bottom: 12px; }
.compare-title { font-size: 0.82rem; font-weight: 700; margin: 0 0 8px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px; }
.badge-save { font-size: 0.74rem; padding: 2px 8px; border-radius: 999px; background: var(--good-bg); color: var(--good); font-weight: 700; font-family: var(--font-mono); }
.compare-row { display: flex; justify-content: space-between; align-items: center; font-size: 0.84rem; padding: 5px 0; border-bottom: 1px dashed var(--border); gap: 8px; }
.compare-row:last-child { border-bottom: none; }
.compare-row strong { font-family: var(--font-mono); }

/* ── Formula & Actions ── */
.formula-details { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 9px 12px; font-size: 0.83rem; margin-bottom: 12px; }
.formula-details summary { cursor: pointer; font-weight: 700; color: var(--fg); }
.formula-code { font-family: var(--font-mono); font-size: 0.79rem; background: var(--bg-subtle); padding: 8px 10px; border-radius: 6px; margin-top: 8px; overflow-x: auto; white-space: pre-wrap; word-break: break-word; }

.action-row { display: flex; gap: 8px; flex-wrap: wrap; }
.btn-action { flex: 1; min-width: 130px; display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 12px; border-radius: 7px; border: 1px solid var(--border-strong); background: var(--bg-subtle); color: var(--fg); font: inherit; font-size: 0.83rem; font-weight: 700; cursor: pointer; }
.btn-action:hover { border-color: var(--accent); color: var(--accent); }
.btn-action svg { width: 15px; height: 15px; }

/* ── Calculator Cards Grid (Hub & Cross-Links) ── */
.calc-cards-section { margin: 32px 0; }
.section-h2 { font-size: 1.25rem; margin: 0 0 12px; letter-spacing: -0.01em; }
.calc-cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); gap: 12px; }
.calc-link-card { display: flex; flex-direction: column; justify-content: space-between; background: var(--bg-elev); border: 1px solid var(--border); border-radius: 9px; padding: 14px; text-decoration: none; color: var(--fg); transition: transform 0.15s, border-color 0.15s; }
.calc-link-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.calc-link-card h3 { font-size: 0.98rem; margin: 0 0 5px; color: var(--fg); display: flex; align-items: center; gap: 7px; }
.calc-link-card h3 svg { width: 17px; height: 17px; color: var(--accent); flex-shrink: 0; }
.calc-link-card p { font-size: 0.83rem; color: var(--fg-muted); margin: 0 0 10px; }
.calc-link-meta { font-size: 0.75rem; font-family: var(--font-mono); color: var(--accent); font-weight: 700; }

/* ── Reference Table & FAQ ── */
.ref-section { margin: 28px 0; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.table-scroll { overflow-x: auto; }
table.ref-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
table.ref-table th, table.ref-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; }
table.ref-table th { background: var(--bg-subtle); font-weight: 700; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--fg-muted); }
table.ref-table tr:last-child td { border-bottom: none; }

.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; background: var(--bg); }
.faq-item h3 { margin: 0 0 6px; font-size: 0.96rem; }
.faq-item p { margin: 0; font-size: 0.88rem; color: var(--fg-muted); }

/* ── Footer ── */
.site-footer { margin-top: 44px; padding: 22px 0 36px; border-top: 1px solid var(--border); font-size: 0.84rem; color: var(--fg-muted); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { color: var(--fg-muted); text-decoration: none; }
.footer-links a:hover { color: var(--fg); text-decoration: underline; }

/* ── Legal Pages ── */
.legal-wrap { max-width: 760px; margin: 28px auto; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.legal-wrap h1 { margin-top: 0; font-size: 1.5rem; }
.legal-wrap h2 { font-size: 1.08rem; margin-top: 1.5em; }
.legal-wrap address { font-style: normal; line-height: 1.65; }
.mtm-optout { display: flex; align-items: center; gap: 10px; margin-top: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; }

/* ── Print Stylesheet (Contractor Takeoff Sheet) ── */
@media print {
  .site-header, .presets-bar, .btn-add-zone, .zone-remove, .action-row, .calc-cards-section, .site-footer { display: none !important; }
  body { background: #fff !important; color: #000 !important; font-size: 11pt; }
  .workbench { grid-template-columns: 1fr 1fr !important; gap: 12px !important; }
  .panel, .ref-section { box-shadow: none !important; border: 1px solid #999 !important; break-inside: avoid; }
  .blueprint-stage { background: #f8fafc !important; color: #0f172a !important; border: 1px solid #94a3b8 !important; }
}