/* =============================================
   CryptoCorax - Premium Crypto Tools Platform
   Modern, Responsive, Theme-Aware Stylesheet
   ============================================= */

/* ---------- Design Tokens ---------- */
:root {
  --cc-primary: #0ea5e9;
  --cc-primary-dark: #0284c7;
  --cc-accent: #f59e0b;
  --cc-accent-2: #8b5cf6;
  --cc-success: #10b981;
  --cc-danger: #ef4444;
  --cc-warning: #f59e0b;

  /* Light theme */
  --cc-bg: #f7f9fc;
  --cc-bg-soft: #eef2f9;
  --cc-surface: #ffffff;
  --cc-surface-alt: #f1f5f9;
  --cc-border: #e2e8f0;
  --cc-text: #0f172a;
  --cc-text-soft: #475569;
  --cc-text-muted: #64748b;
  --cc-shadow-sm: 0 1px 2px rgba(15,23,42,0.06);
  --cc-shadow: 0 4px 16px rgba(15,23,42,0.08);
  --cc-shadow-lg: 0 12px 40px rgba(15,23,42,0.12);
  --cc-gradient: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);
  --cc-header-bg: rgba(255,255,255,0.85);

  --cc-radius-sm: 8px;
  --cc-radius: 14px;
  --cc-radius-lg: 22px;
  --cc-transition: 0.3s cubic-bezier(0.4,0,0.2,1);

  --cc-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --cc-font-display: 'Sora', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --cc-font-mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --cc-bg: #070b14;
  --cc-bg-soft: #0d1424;
  --cc-surface: #111a2e;
  --cc-surface-alt: #16223b;
  --cc-border: #1e2a44;
  --cc-text: #f1f5f9;
  --cc-text-soft: #cbd5e1;
  --cc-text-muted: #94a3b8;
  --cc-shadow-sm: 0 1px 2px rgba(0,0,0,0.5);
  --cc-shadow: 0 4px 20px rgba(0,0,0,0.4);
  --cc-shadow-lg: 0 16px 50px rgba(0,0,0,0.5);
  --cc-gradient: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);
  --cc-header-bg: rgba(7,11,20,0.85);
}

/* ---------- Reset & Base ---------- */
*,*::before,*::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--cc-font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--cc-text);
  background: var(--cc-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--cc-transition), color var(--cc-transition);
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--cc-primary); text-decoration: none; transition: color var(--cc-transition); }
a:hover { color: var(--cc-primary-dark); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

h1,h2,h3,h4,h5,h6 {
  font-family: var(--cc-font-display);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--cc-text);
}
h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: 1.35rem; margin-bottom: 0.75rem; }
p { color: var(--cc-text-soft); }
ul { list-style: none; }

/* ---------- Layout Containers ---------- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-header .eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: var(--cc-surface-alt);
  color: var(--cc-primary);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-header p { color: var(--cc-text-muted); margin-top: 12px; }

/* ---------- Header & Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cc-header-bg);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--cc-border);
  transition: background var(--cc-transition), border-color var(--cc-transition);
}
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--cc-font-display);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--cc-text);
  letter-spacing: -0.02em;
}
.brand-logo {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--cc-gradient);
  border-radius: 10px;
  color: #fff;
  font-weight: 900;
  font-size: 1.05rem;
  box-shadow: 0 6px 20px rgba(14,165,233,0.35);
}
.brand-name span { color: var(--cc-primary); }
.primary-nav { display: flex; align-items: center; gap: 6px; }
.primary-nav > li > a, .primary-nav > li > button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--cc-text-soft);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--cc-transition);
}
.primary-nav > li > a:hover, .primary-nav > li > button:hover {
  background: var(--cc-surface-alt);
  color: var(--cc-text);
}
.primary-nav .has-dropdown { position: relative; }
.primary-nav .has-dropdown .dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 280px;
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  box-shadow: var(--cc-shadow-lg);
  padding: 12px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--cc-transition);
}
.primary-nav .has-dropdown:hover .dropdown,
.primary-nav .has-dropdown:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown a {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--cc-text-soft);
  font-weight: 500;
  font-size: 0.92rem;
  transition: all var(--cc-transition);
}
.dropdown a:hover {
  background: var(--cc-surface-alt);
  color: var(--cc-primary);
}
.dropdown .dd-icon {
  margin-right: 10px;
  color: var(--cc-primary);
  font-weight: 700;
}

.nav-actions { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--cc-surface-alt);
  color: var(--cc-text-soft);
  transition: all var(--cc-transition);
}
.theme-toggle:hover { color: var(--cc-primary); transform: rotate(20deg); }
.theme-toggle .icon-sun, .theme-toggle .icon-moon { width: 20px; height: 20px; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.hamburger {
  display: none;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--cc-surface-alt);
  position: relative;
}
.hamburger span {
  position: absolute;
  left: 12px; right: 12px;
  height: 2px;
  background: var(--cc-text);
  border-radius: 2px;
  transition: all var(--cc-transition);
}
.hamburger span:nth-child(1) { top: 16px; }
.hamburger span:nth-child(2) { top: 21px; }
.hamburger span:nth-child(3) { top: 26px; }
.hamburger.is-open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--cc-transition);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--cc-gradient);
  color: #fff;
  box-shadow: 0 8px 22px rgba(14,165,233,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(14,165,233,0.45); color: #fff; }
.btn-secondary {
  background: var(--cc-surface);
  color: var(--cc-text);
  border-color: var(--cc-border);
}
[data-theme="dark"] .btn-secondary { background: var(--cc-surface-alt); }
.btn-secondary:hover { border-color: var(--cc-primary); color: var(--cc-primary); }
.btn-ghost { background: transparent; color: var(--cc-text); }
.btn-ghost:hover { background: var(--cc-surface-alt); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 80px;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(139,92,246,0.20), transparent 60%),
    radial-gradient(900px 500px at 0% 10%, rgba(14,165,233,0.18), transparent 60%);
}
[data-theme="dark"] .hero {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(139,92,246,0.25), transparent 60%),
    radial-gradient(900px 500px at 0% 10%, rgba(14,165,233,0.20), transparent 60%),
    linear-gradient(180deg, #070b14 0%, #0d1424 100%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero-content .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--cc-surface-alt);
  color: var(--cc-primary);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid var(--cc-border);
}
.hero-content h1 {
  font-size: clamp(2.2rem, 4vw + 1rem, 3.6rem);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.1;
}
.hero-content h1 .gradient-text {
  background: var(--cc-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-content .lede {
  font-size: 1.1rem;
  color: var(--cc-text-soft);
  max-width: 580px;
  margin-bottom: 32px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 32px; }
.hero-trust {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--cc-text-muted);
  font-size: 0.9rem;
}
.hero-trust .dot { width: 8px; height: 8px; border-radius: 999px; background: var(--cc-success); display: inline-block; margin-right: 6px; }

.hero-visual {
  position: relative;
  height: 460px;
  border-radius: var(--cc-radius-lg);
  background: linear-gradient(160deg, rgba(14,165,233,0.10), rgba(139,92,246,0.10));
  border: 1px solid var(--cc-border);
  overflow: hidden;
  box-shadow: var(--cc-shadow-lg);
}
.hero-visual::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--cc-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--cc-border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse at center, #000 50%, transparent 100%);
}
.hero-card {
  position: absolute;
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  padding: 16px 20px;
  box-shadow: var(--cc-shadow);
  display: flex; align-items: center; gap: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cc-text);
  animation: float 6s ease-in-out infinite;
}
.hero-card .hc-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--cc-gradient);
  display: grid; place-items: center;
  color: #fff; font-weight: 800;
}
.hero-card.hc-1 { top: 14%; left: 8%; animation-delay: 0s; }
.hero-card.hc-2 { top: 44%; right: 10%; animation-delay: 1.2s; }
.hero-card.hc-3 { bottom: 12%; left: 18%; animation-delay: 2.4s; }
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* Floating particles */
.particle {
  position: absolute;
  border-radius: 999px;
  background: var(--cc-primary);
  opacity: 0.35;
  animation: pulse 4s ease-in-out infinite;
}
.particle.p1 { width: 8px; height: 8px; top: 20%; left: 60%; animation-delay: 0s; }
.particle.p2 { width: 12px; height: 12px; top: 70%; left: 70%; background: var(--cc-accent-2); animation-delay: 1s; }
.particle.p3 { width: 6px; height: 6px; top: 35%; left: 25%; animation-delay: 2s; }
.particle.p4 { width: 10px; height: 10px; top: 85%; left: 40%; background: var(--cc-accent); animation-delay: 1.5s; }
@keyframes pulse {
  0%,100% { transform: scale(1); opacity: 0.35; }
  50% { transform: scale(1.5); opacity: 0.15; }
}

/* ---------- Stat Bar ---------- */
.stat-bar { padding: 32px 0; background: var(--cc-surface); border-top: 1px solid var(--cc-border); border-bottom: 1px solid var(--cc-border); }
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat .num {
  font-family: var(--cc-font-display);
  font-size: 2rem;
  font-weight: 800;
  background: var(--cc-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: block;
}
.stat .label { color: var(--cc-text-muted); font-size: 0.95rem; }

/* ---------- Tool Cards Grid ---------- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.tool-card {
  display: flex;
  flex-direction: column;
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  padding: 28px;
  transition: all var(--cc-transition);
  position: relative;
  overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--cc-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--cc-transition);
}
.tool-card:hover { transform: translateY(-4px); border-color: var(--cc-primary); box-shadow: var(--cc-shadow-lg); }
.tool-card:hover::before { transform: scaleX(1); }
.tool-card .icon-wrap {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(14,165,233,0.15), rgba(139,92,246,0.15));
  color: var(--cc-primary);
  display: grid; place-items: center;
  margin-bottom: 18px;
  transition: transform var(--cc-transition);
}
.tool-card:hover .icon-wrap { transform: scale(1.05) rotate(-3deg); }
.tool-card .icon-wrap svg { width: 28px; height: 28px; }
.tool-card .cat {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--cc-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.tool-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.tool-card p { color: var(--cc-text-muted); font-size: 0.95rem; flex: 1; margin-bottom: 18px; }
.tool-card .card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--cc-primary);
  font-weight: 600;
  font-size: 0.92rem;
}
.tool-card .card-cta svg { transition: transform var(--cc-transition); }
.tool-card:hover .card-cta svg { transform: translateX(4px); }

/* Category filter chips */
.filter-chips {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
}
.chip {
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  color: var(--cc-text-soft);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--cc-transition);
}
.chip:hover { border-color: var(--cc-primary); color: var(--cc-primary); }
.chip.active { background: var(--cc-gradient); color: #fff; border-color: transparent; }

/* ---------- Workflow / Ecosystem ---------- */
.workflow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  align-items: stretch;
}
.workflow-step {
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  padding: 24px;
  text-align: center;
  position: relative;
  transition: all var(--cc-transition);
}
.workflow-step:hover { border-color: var(--cc-primary); transform: translateY(-3px); }
.workflow-step .step-num {
  display: inline-block;
  width: 36px; height: 36px;
  border-radius: 999px;
  background: var(--cc-gradient);
  color: #fff;
  font-weight: 800;
  line-height: 36px;
  margin-bottom: 12px;
}
.workflow-step h4 { font-size: 1rem; margin-bottom: 6px; }
.workflow-step p { font-size: 0.85rem; color: var(--cc-text-muted); }
.workflow-step .arrow {
  position: absolute; right: -22px; top: 50%; transform: translateY(-50%);
  color: var(--cc-primary); font-weight: 800; font-size: 1.4rem;
  display: none;
}
@media (min-width: 1200px) {
  .workflow-step .arrow { display: block; }
  .workflow-step:last-child .arrow { display: none; }
}

/* ---------- Calculator Layout ---------- */
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--cc-text-muted);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--cc-text-muted); }
.breadcrumb a:hover { color: var(--cc-primary); }
.breadcrumb .sep { color: var(--cc-border); }
.breadcrumb .current { color: var(--cc-text); font-weight: 600; }

.tool-hero {
  padding: 56px 0 32px;
  text-align: center;
  border-bottom: 1px solid var(--cc-border);
  margin-bottom: 48px;
}
.tool-hero h1 { margin-bottom: 16px; }
.tool-hero .lede {
  max-width: 720px; margin: 0 auto;
  font-size: 1.05rem; color: var(--cc-text-soft);
}
.tool-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}
.calc-card {
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius-lg);
  padding: 32px;
  box-shadow: var(--cc-shadow);
}
.calc-card h2 { margin-bottom: 8px; }
.calc-card .calc-subtitle { color: var(--cc-text-muted); margin-bottom: 24px; }

.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}
.field {
  display: flex; flex-direction: column;
  gap: 8px;
}
.field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--cc-text-soft);
  display: flex; align-items: center; justify-content: space-between;
}
.field .help { color: var(--cc-text-muted); font-size: 0.78rem; font-weight: 400; }
.field input, .field select, .field textarea {
  padding: 12px 14px;
  border: 1px solid var(--cc-border);
  background: var(--cc-surface-alt);
  color: var(--cc-text);
  border-radius: 10px;
  outline: none;
  transition: all var(--cc-transition);
  font-size: 1rem;
  width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--cc-primary);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.2);
}
.field .input-prefix, .field .input-suffix {
  position: relative;
}
.field .input-prefix input { padding-left: 36px; }
.field .input-suffix input { padding-right: 36px; }
.input-prefix::before, .input-suffix::after {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  color: var(--cc-text-muted);
  font-size: 0.85rem; font-weight: 600;
  pointer-events: none;
}
.input-prefix::before { left: 12px; }
.input-suffix::after { right: 12px; }
.input-prefix.prefix-btc::before { content: '₿'; }
.input-prefix.prefix-usd::before { content: '$'; }
.input-suffix.suffix-pct::after { content: '%'; }
.input-suffix.suffix-usd::after { content: 'USD'; }

.field-error { color: var(--cc-danger); font-size: 0.82rem; min-height: 16px; }

.calc-actions {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-top: 20px;
}

.calc-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-top: 24px;
}
.result-tile {
  background: var(--cc-surface-alt);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  padding: 18px;
  text-align: left;
}
.result-tile .rt-label {
  font-size: 0.78rem;
  color: var(--cc-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  margin-bottom: 6px;
  display: block;
}
.result-tile .rt-value {
  font-family: var(--cc-font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--cc-text);
}
.result-tile .rt-sub { font-size: 0.82rem; color: var(--cc-text-muted); margin-top: 4px; }
.result-tile.featured {
  background: var(--cc-gradient);
  border: none;
}
.result-tile.featured .rt-label, .result-tile.featured .rt-value, .result-tile.featured .rt-sub {
  color: #fff;
}
.result-tile.positive .rt-value { color: var(--cc-success); }
.result-tile.negative .rt-value { color: var(--cc-danger); }

.aside-card {
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  padding: 24px;
}
.aside-card h3 { font-size: 1.05rem; margin-bottom: 12px; }
.aside-card ul li { padding: 6px 0; color: var(--cc-text-soft); font-size: 0.92rem; position: relative; padding-left: 18px; }
.aside-card ul li::before { content: '✓'; color: var(--cc-primary); position: absolute; left: 0; font-weight: 800; }

/* Purchase rows for average buy price */
.purchase-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.purchase-row {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1.5fr 1fr auto;
  gap: 10px;
  align-items: end;
  padding: 12px;
  background: var(--cc-surface-alt);
  border: 1px dashed var(--cc-border);
  border-radius: 10px;
}
.purchase-row .field { gap: 4px; }
.purchase-row label { font-size: 0.78rem; }
.purchase-row .remove-row {
  background: transparent;
  color: var(--cc-danger);
  width: 38px; height: 38px;
  border-radius: 8px;
  align-self: end;
  display: grid; place-items: center;
  transition: background var(--cc-transition);
}
.purchase-row .remove-row:hover { background: rgba(239,68,68,0.10); }

@media (max-width: 700px) {
  .purchase-row { grid-template-columns: 1fr 1fr; }
  .purchase-row .remove-row { grid-column: span 2; justify-self: end; width: 100%; }
}

/* ---------- Countdown ---------- */
.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}
.countdown-tile {
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  padding: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.countdown-tile::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--cc-gradient);
}
.countdown-tile .cd-value {
  font-family: var(--cc-font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  background: var(--cc-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  display: block;
  margin-bottom: 6px;
}
.countdown-tile .cd-label {
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--cc-text-muted);
}
@media (max-width: 540px) {
  .countdown-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  overflow: hidden;
  transition: border-color var(--cc-transition);
}
.faq-item.open { border-color: var(--cc-primary); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; text-align: left;
  padding: 18px 22px;
  font-weight: 600;
  color: var(--cc-text);
  font-size: 1rem;
}
.faq-q .icon {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--cc-surface-alt);
  color: var(--cc-primary);
  transition: transform var(--cc-transition);
}
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--cc-transition);
}
.faq-a-inner { padding: 0 22px 22px; color: var(--cc-text-soft); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--cc-surface);
  border-top: 1px solid var(--cc-border);
  padding: 64px 0 0;
  margin-top: 80px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
.footer-col h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cc-text-muted);
  margin-bottom: 16px;
}
.footer-col ul li { padding: 6px 0; }
.footer-col ul li a { color: var(--cc-text-soft); font-weight: 500; }
.footer-col ul li a:hover { color: var(--cc-primary); }
.footer-brand p { color: var(--cc-text-muted); font-size: 0.95rem; margin: 12px 0 20px; max-width: 360px; }
.social-row { display: flex; gap: 8px; }
.social-row a {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--cc-surface-alt);
  color: var(--cc-text-soft);
  transition: all var(--cc-transition);
}
.social-row a:hover { background: var(--cc-primary); color: #fff; transform: translateY(-2px); }
.social-row svg { width: 18px; height: 18px; }

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--cc-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--cc-text-muted);
  font-size: 0.88rem;
}

/* ---------- Article / Content ---------- */
.content {
  max-width: 820px; margin: 0 auto;
}
.content section { margin-bottom: 56px; }
.content h2 { margin-top: 24px; margin-bottom: 14px; font-size: 1.6rem; }
.content h3 { margin-top: 18px; margin-bottom: 8px; }
.content p { margin-bottom: 14px; line-height: 1.75; }
.content ul, .content ol { margin: 12px 0 18px 22px; color: var(--cc-text-soft); }
.content ul li, .content ol li { margin-bottom: 6px; }
.content blockquote {
  border-left: 4px solid var(--cc-primary);
  padding: 16px 20px;
  background: var(--cc-surface-alt);
  border-radius: 10px;
  color: var(--cc-text-soft);
  margin: 18px 0;
}

.halving-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  overflow: hidden;
  margin: 24px 0;
}
.halving-table th, .halving-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--cc-border);
}
.halving-table th { background: var(--cc-surface-alt); font-weight: 700; font-size: 0.85rem; color: var(--cc-text-soft); text-transform: uppercase; letter-spacing: 0.05em; }
.halving-table tr:last-child td { border-bottom: none; }

/* ---------- Notice / Disclaimer ---------- */
.notice {
  background: linear-gradient(135deg, rgba(245,158,11,0.12), rgba(239,68,68,0.08));
  border: 1px solid rgba(245,158,11,0.30);
  border-radius: var(--cc-radius);
  padding: 18px 22px;
  margin: 24px 0;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.notice .notice-icon { color: var(--cc-warning); flex-shrink: 0; width: 24px; height: 24px; }
.notice strong { color: var(--cc-text); }
.notice p { margin: 0; color: var(--cc-text-soft); font-size: 0.92rem; }

/* ---------- Reveal Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Mobile Drawer ---------- */
.mobile-drawer {
  position: fixed;
  inset: 72px 0 0 0;
  background: var(--cc-bg);
  z-index: 90;
  padding: 24px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}
.mobile-drawer.is-open { transform: translateX(0); }
.mobile-drawer ul li {
  border-bottom: 1px solid var(--cc-border);
}
.mobile-drawer ul li a, .mobile-drawer ul li button {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
  width: 100%;
  color: var(--cc-text);
  font-weight: 600;
}
.mobile-drawer .submenu { padding-left: 16px; }
.mobile-drawer .submenu li { border: none; }
.mobile-drawer .submenu li a {
  font-weight: 500;
  color: var(--cc-text-soft);
  font-size: 0.95rem;
}
.accordion-toggle .chev { transition: transform var(--cc-transition); }
.accordion-toggle.is-open .chev { transform: rotate(180deg); }
.mobile-drawer .panel { display: none; }
.mobile-drawer .panel.is-open { display: block; }

/* ---------- Forms ---------- */
.form-card {
  background: var(--cc-surface);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius-lg);
  padding: 32px;
  box-shadow: var(--cc-shadow);
}
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
textarea { min-height: 140px; resize: vertical; }
.form-success {
  background: rgba(16,185,129,0.10);
  border: 1px solid rgba(16,185,129,0.30);
  color: var(--cc-success);
  padding: 14px 18px;
  border-radius: 10px;
  margin-top: 16px;
  display: none;
}
.form-success.is-visible { display: block; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { height: 320px; }
  .tool-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .primary-nav { display: none; }
  .hamburger { display: block; }
  .section { padding: 56px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 48px; }
  .calc-card { padding: 22px; }
  .tool-hero { padding: 32px 0 16px; margin-bottom: 24px; }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Focus States ---------- */
:focus-visible {
  outline: 2px solid var(--cc-primary);
  outline-offset: 2px;
  border-radius: 4px;
}