:root {
  --bg: #0b1220;
  --bg2: #111827;
  --surface: rgba(17, 24, 39, 0.78);
  --surface2: rgba(30, 41, 59, 0.86);
  --surface3: rgba(51, 65, 85, 0.96);
  --border: rgba(148, 163, 184, 0.22);
  --border2: rgba(148, 163, 184, 0.32);
  --text: #f8fafc;
  --text-dim: #cbd5e1;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #2563eb;
  --accent-dim: rgba(56, 189, 248, 0.14);
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --shadow: 0 20px 45px rgba(2, 6, 23, 0.35);
  --radius: 22px;
}

[data-theme="light"] {
  --bg: #f4f7fb;
  --bg2: #e8eef8;
  --surface: rgba(255, 255, 255, 0.88);
  --surface2: rgba(248, 250, 252, 0.96);
  --surface3: rgba(241, 245, 249, 1);
  --border: rgba(15, 23, 42, 0.08);
  --border2: rgba(15, 23, 42, 0.12);
  --text: #0f172a;
  --text-dim: #334155;
  --text-muted: #64748b;
  --accent: #0284c7;
  --accent-2: #2563eb;
  --accent-dim: rgba(2, 132, 199, 0.1);
  --shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(37, 99, 235, 0.2), transparent 35%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.08), transparent 25%),
    radial-gradient(circle at 80% 0%, rgba(37, 99, 235, 0.12), transparent 28%);
}

a {
  color: inherit;
}

nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.4rem;
  backdrop-filter: blur(18px);
  background: rgba(11, 18, 32, 0.7);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] nav {
  background: rgba(244, 247, 251, 0.82);
}

main {
  width: min(1280px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.hero,
.card,
.tool-card,
.news-card,
.wissen-card,
.prices-table,
.hero-fng,
.live-price-box,
.result-box,
.hint-box,
.chart-container {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  padding: 3.4rem;
  margin-bottom: 2.5rem;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.18), rgba(37, 99, 235, 0.08) 45%, transparent 70%);
  pointer-events: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-eyebrow,
.hero-badge,
.section-title {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.page-header h1 {
  margin: 0.8rem 0 1rem;
  font-size: clamp(2.1rem, 5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero h1 span,
.page-header h1 span,
.hero h1 .accent {
  color: var(--accent);
}

.hero p,
.page-header p,
.card-sub,
.card-desc,
.tool-desc,
.news-desc,
.wissen-desc,
.hfng-meta,
.hfng-label2,
.hint-box,
footer p {
  color: var(--text-dim);
  line-height: 1.65;
}

.hero-actions,
.pf-actions,
.section-header,
.card-header,
.live-price-top,
.nav-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

section {
  margin-bottom: 2.5rem;
}

.btn,
.btn-primary,
.btn-secondary,
.btn-calc,
.btn-outline,
.btn-green,
.theme-toggle,
.lang-toggle,
.nav-hamburger,
.nav-drawer-close,
.calc-nav-btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 14px;
  cursor: pointer;
  transition: 0.22s ease;
  font: inherit;
}

.btn,
.btn-primary,
.btn-calc,
.btn-green {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  padding: 0.9rem 1.15rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.28);
}

.btn:hover,
.btn-primary:hover,
.btn-calc:hover,
.btn-green:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

.btn-secondary,
.btn-outline,
.calc-nav-btn {
  background: var(--surface2);
  border-color: var(--border2);
  color: var(--text);
  padding: 0.85rem 1rem;
  text-decoration: none;
  font-weight: 600;
}

.btn-secondary:hover,
.btn-outline:hover,
.calc-nav-btn:hover,
.calc-nav-btn.active {
  background: var(--surface3);
  border-color: rgba(56, 189, 248, 0.35);
}

.divider {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border2), transparent);
  margin: 2.6rem 0;
}

.tools-grid,
.news-grid,
.wissen-grid,
.form-grid {
  display: grid;
  gap: 1.35rem;
}

.tools-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.tool-card,
.news-card,
.wissen-card,
.card {
  border-radius: var(--radius);
}

.tool-card,
.news-card,
.wissen-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.6rem;
  text-decoration: none;
}

.tool-card:hover,
.news-card:hover,
.wissen-card:hover,
.card:hover,
.hero-fng:hover {
  transform: translateY(-2px);
  border-color: rgba(56, 189, 248, 0.34);
}

.tool-icon,
.wissen-icon {
  font-size: 1.6rem;
}

.tool-name,
.news-title,
.wissen-name,
.card-title {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.35;
}

.tool-arrow,
.section-more,
.news-source,
.news-date {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.92rem;
}

.tool-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.badge-new { background: rgba(34, 197, 94, 0.18); color: #4ade80; }
.badge-hot { background: rgba(245, 158, 11, 0.18); color: #fbbf24; }

.prices-table {
  border-radius: 24px;
  overflow: hidden;
}

.prices-table table {
  width: 100%;
  border-collapse: collapse;
}

.prices-table th,
.prices-table td,
.result-row,
.res-row,
.qc-row {
  padding: 1.1rem 1.2rem;
  border-bottom: 1px solid var(--border);
}

.prices-table th,
.result-row .lbl,
.res-row .lbl,
.qc-row .lbl,
.holding-meter-label,
.news-source {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.prices-table tr:last-child td,
.result-row:last-child,
.res-row:last-child,
.qc-row:last-child {
  border-bottom: 0;
}

.right,
.result-row .val,
.res-row .val,
.qc-row .val {
  text-align: right;
}

.coin-cell {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.coin-icon {
  width: 2.2rem;
  height: 2.2rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--surface2);
  border: 1px solid var(--border2);
}

.coin-name,
.price-val,
.result-big,
.big,
.live-price-val,
#pfTotal {
  font-weight: 800;
}

.coin-sym,
.prices-loading,
.news-loading {
  color: var(--text-muted);
}

.change-up,
.val.green,
.big.up { color: var(--success); }
.change-down,
.val.red,
.big.down { color: var(--danger); }

.news-grid,
.wissen-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.news-card,
.wissen-card {
  min-height: 180px;
}

footer {
  width: min(1280px, calc(100% - 3rem));
  margin: 0 auto 2rem;
  padding: 1.8rem 0 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  text-align: center;
}

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

.nav-brand { font-size:1rem; font-weight:800; color:var(--text); text-decoration:none; letter-spacing:-0.02em; }
.nav-brand span { color:var(--accent); }
.nav-links { display:flex; gap:0.2rem; align-items:center; flex-wrap:wrap; justify-content:flex-end; }
.nav-links a { color:var(--text-dim); text-decoration:none; font-size:0.82rem; font-weight:500; padding:0.35rem 0.65rem; border-radius:10px; transition:all 0.2s; white-space:nowrap; }
.nav-links a:hover { color:var(--text); background:var(--surface2); }
.nav-links a.active { color:var(--accent); background:rgba(37,99,235,0.18); font-weight:700; box-shadow:0 -2px 0 var(--accent) inset; }
.nav-hamburger { display:none; background:var(--surface2); border-color:var(--border2); color:var(--text); padding:0.5rem 0.7rem; }
.lang-toggle { background:var(--surface2); border:1px solid var(--border2); color:var(--text-dim); padding:0.45rem 0.65rem; font-size:0.78rem; font-weight:600; }
.lang-toggle:hover { color:var(--text); background:var(--surface3); }
.lang-toggle.en { background:var(--accent-dim); color:var(--accent); border-color:var(--accent); }
.theme-toggle { background:var(--surface2); border:1px solid var(--border2); color:var(--text-dim); padding:0.45rem 0.65rem; font-size:0.78rem; }
.theme-toggle:hover { color:var(--text); background:var(--surface3); }
.nav-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.6); z-index:150; opacity:0; transition:opacity 0.3s; }
.nav-overlay.open { display:block; opacity:1; }
.nav-drawer { position:fixed; top:0; right:0; bottom:0; width:260px; max-width:85vw; background:var(--surface); border-left:1px solid var(--border); z-index:200; transform:translateX(100%); transition:transform 0.3s ease; overflow-y:auto; backdrop-filter: blur(18px); }
.nav-drawer.open { transform:translateX(0); }
.nav-drawer-header { padding:1rem 1.2rem; border-bottom:1px solid var(--border); }
.nav-drawer-close { background:none; border:none; color:var(--text-dim); font-size:1.5rem; padding:0.2rem; }
.nav-drawer-links { padding:0.8rem 0.5rem; }
.nav-drawer-links a { display:block; color:var(--text-dim); text-decoration:none; font-size:0.95rem; font-weight:500; padding:0.7rem 1rem; border-radius:8px; transition:all 0.2s; }
.nav-drawer-links a:hover { color:var(--text); background:var(--surface2); }
.nav-drawer-links a.active { color:var(--accent); background:rgba(37,99,235,0.18); font-weight:700; }
.nav-drawer-links .theme-toggle, .nav-drawer-links .lang-toggle { margin:0.5rem 1rem; font-size:1rem; padding:0.5rem 0.8rem; }

.page-header {
  margin-bottom: 2rem;
}

.page-header,
.section-header {
  margin-bottom: 1.1rem;
}

.calc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}

.calc-section { display: none; }
.calc-section.active { display: block; }

.card {
  padding: 1.7rem;
}

.form-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-group.full {
  grid-column: 1 / -1;
}

label,
.form-section-label {
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  border: 1px solid var(--border2);
  border-radius: 14px;
  background: var(--surface2);
  color: var(--text);
  padding: 0.9rem 1rem;
  font: inherit;
}

input:focus,
select:focus {
  outline: none;
  border-color: rgba(56, 189, 248, 0.55);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.14);
}

input::placeholder {
  color: var(--text-muted);
}

#results,
.result-box,
.live-price-box,
.chart-container {
  border-radius: 20px;
  margin-top: 1rem;
}

#results,
.result-box {
  display: none;
  overflow: hidden;
}

#results.show,
.result-box.show,
.chart-container.show,
.live-price-box.show {
  display: block;
}

.res-profit,
.quick-result {
  padding: 1.1rem;
}

.big,
.result-big,
.live-price-val {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
}

.sub,
.result-sub {
  color: var(--text-dim);
  margin-top: 0.35rem;
}

.holding-meter,
.info-box,
.quick-result {
  margin: 1rem 1.1rem 1.1rem;
}

.meter-bar {
  height: 10px;
  border-radius: 999px;
  background: var(--surface2);
  overflow: hidden;
  margin-top: 0.5rem;
}

.meter-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--warning);
}

.meter-fill.ok { background: var(--success); }
.meter-fill.warn { background: var(--warning); }
.meter-fill.bad { background: var(--danger); }

.holding-status,
.info-box,
.hint-box {
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: var(--surface2);
  border: 1px solid var(--border2);
}

.pf-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
}

.btn-remove {
  align-self: end;
  background: rgba(239, 68, 68, 0.14);
  border: 1px solid rgba(239, 68, 68, 0.28);
  color: #fca5a5;
  padding: 0.85rem 0.95rem;
}

.btn-remove:hover {
  background: rgba(239, 68, 68, 0.22);
}

.chart-container {
  padding: 1rem;
}

.chart-container canvas {
  max-height: 360px;
}

@media (max-width: 1100px) {
  main,
  footer {
    width: min(100% - 2rem, 1280px);
  }

  .tools-grid,
  .news-grid,
  .wissen-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

@media (max-width: 900px) {
  .hero {
    padding: 2.2rem;
  }

  .section-header,
  .card-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .pf-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width:600px) {
  .nav-hamburger { display:block; }
  .nav-links { display:none; }
  .nav-drawer-header .lang-toggle { display:inline-block !important; }
  .nav-drawer-header .theme-toggle { display:inline-block !important; }
  main { width: min(100% - 1rem, 1280px); padding-top: 1rem; }
  .hero { padding: 1.5rem; border-radius: 24px; }
  .hero-actions, .section-header, .card-header, .pf-actions { align-items: stretch; flex-direction: column; }
  .tools-grid,
  .news-grid,
  .wissen-grid,
  .form-grid { grid-template-columns: 1fr; }
  .card,
  .tool-card,
  .news-card,
  .wissen-card { padding: 1.25rem; }
  footer { width: min(100% - 1rem, 1280px); padding: 1rem 0 0; font-size: 0.72rem; }
}