/* =====================================================
   HashRate Pro — Crypto Mining Profitability Calculator
   Dark glassmorphism theme
   ===================================================== */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.8);
  --bg-card-hover: rgba(24, 34, 54, 0.9);
  --border: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(59, 130, 246, 0.3);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --gradient-main: linear-gradient(135deg, #3b82f6 0%, #06b6d4 50%, #10b981 100%);
  --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Background grid */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.app {
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-pro {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.live-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.pulse {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* ===== HERO ===== */
.hero {
  text-align: center;
  padding: 60px 0 30px;
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== TICKER ===== */
.ticker {
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.ticker-track {
  display: flex;
  gap: 32px;
  animation: scroll 30s linear infinite;
  width: max-content;
}

.ticker-track:hover {
  animation-play-state: paused;
}

@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.ticker-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  white-space: nowrap;
  color: var(--text-secondary);
}

.ticker-item .symbol {
  font-weight: 600;
  color: var(--text-primary);
}

.ticker-item .price {
  font-weight: 500;
  color: var(--accent-cyan);
}

.ticker-item .change {
  font-size: 0.8rem;
  padding: 2px 6px;
  border-radius: 4px;
}

.ticker-item .change.up {
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
}

.ticker-item .change.down {
  color: var(--accent-red);
  background: rgba(239, 68, 68, 0.1);
}

/* ===== CALCULATOR ===== */
.calculator-section {
  padding: 50px 0;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

.calc-card h2 {
  font-size: 1.2rem;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

/* Form Elements */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

select, input[type="number"] {
  width: 100%;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font);
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

select:focus, input[type="number"]:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

optgroup {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.input-with-icon {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
}

.input-with-icon input {
  padding-left: 40px;
}

.input-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Toggle Group */
.toggle-group {
  display: flex;
  gap: 8px;
}

.toggle-btn {
  flex: 1;
  padding: 12px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}

.toggle-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

.toggle-btn.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* Advanced */
.advanced-section {
  margin-top: 8px;
}

.advanced-section summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 8px 0;
  user-select: none;
}

.advanced-section[open] summary {
  margin-bottom: 16px;
  color: var(--accent-blue);
}

/* ===== RESULTS ===== */
.results-main {
  margin-bottom: 24px;
}

.profit-highlight {
  text-align: center;
  padding: 24px;
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
}

.profit-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.profit-value {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.profit-value.positive {
  color: var(--accent-green);
}

.profit-value.negative {
  color: var(--accent-red);
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.result-item {
  display: flex;
  flex-direction: column;
  padding: 14px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.result-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.result-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.result-value.cost {
  color: var(--accent-amber);
}

/* Breakdown Bar */
.breakdown-bar {
  display: flex;
  height: 32px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 24px;
}

.bar-revenue {
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: width 0.5s ease;
}

.bar-cost {
  background: linear-gradient(90deg, var(--accent-amber), var(--accent-red));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: width 0.5s ease;
}

.bar-revenue span, .bar-cost span {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

/* CTA */
.cta-box {
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.cta-box p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.cta-btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s;
  margin: 4px;
}

.cta-btn.primary {
  background: var(--gradient-main);
  color: white;
}

.cta-btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.cta-btn.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.cta-btn.secondary:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* ===== HARDWARE TABLE ===== */
.hardware-section {
  padding: 50px 0;
}

.hardware-section h2 {
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.hardware-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.hardware-table th {
  background: rgba(0, 0, 0, 0.3);
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

.hardware-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.hardware-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
}

.hardware-table .profit-positive {
  color: var(--accent-green);
  font-weight: 600;
}

.hardware-table .profit-negative {
  color: var(--accent-red);
  font-weight: 600;
}

/* ===== COIN GRID ===== */
.coins-section {
  padding: 50px 0;
}

.coins-section h2 {
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.coin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.coin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.2s;
}

.coin-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.coin-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.coin-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.coin-name {
  font-weight: 600;
}

.coin-symbol {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.coin-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.coin-stat {
  font-size: 0.8rem;
}

.coin-stat-label {
  color: var(--text-muted);
}

.coin-stat-value {
  font-weight: 600;
  color: var(--accent-cyan);
}

.mineable-badge {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  margin-left: auto;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 50px 0;
}

.faq-section h2 {
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.faq-item h3 {
  font-size: 1rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.faq-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 40px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  gap: 40px;
  align-items: start;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-disclaimer {
  text-align: right;
}

.footer-disclaimer p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-disclaimer {
    text-align: left;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .profit-value {
    font-size: 2rem;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}