:root {
  --bg-0: #050505;
  --bg-1: #0a0d10;
  --bg-2: #11151a;
  --bg-3: #1a1f25;
  --bg-card: #0f1419;
  --bg-card-hover: #151c23;
  
  --gold-1: #f7931a;
  --gold-2: #d4820f;
  --gold-3: #a66b0c;
  --gold-glow: rgba(247, 147, 26, 0.15);
  --gold-glow-strong: rgba(247, 147, 26, 0.4);
  
  --text-1: #ffffff;
  --text-2: #b8b8b8;
  --text-3: #6b7280;
  
  --line: #2a2a2a;
  --line-gold: #3d3420;
  
  --accent: #27d5a5;
  --accent-dim: #1a8f6e;
  --warn: #ffb454;
  --danger: #ff5f56;
  --danger-dim: #a34038;
  
  --mono: "IBM Plex Mono", monospace;
  --display: "Space Grotesk", sans-serif;
}

* { box-sizing: border-box; }

html {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
}

body {
  background-color: #050505;
  margin: 0;
  background: 
    radial-gradient(ellipse 80% 60% at 50% -10%, var(--gold-glow), transparent 60%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 50%, var(--bg-0) 100%);
  color: var(--text-1);
  font-family: var(--display);
  min-height: 100vh;
  height: 100%;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.08;
  pointer-events: none;
  z-index: -1;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
  z-index: -1;
}

.hidden { display: none !important; }

.layout {
  max-width: min(1400px, 100%);
  margin: 0 auto;
  padding: 20px;
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--line-gold);
  border-radius: 16px;
  margin-bottom: 20px;
  box-shadow: 0 0 30px var(--gold-glow);
}

.topbar h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold-1), var(--gold-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--text-2);
  font-size: 13px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 20px;
  width: 100%;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.panel-head h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-1);
}

.hero-panel {
  background: linear-gradient(135deg, var(--bg-card) 0%, #0d1218 100%);
  border: 1px solid var(--line-gold);
  box-shadow: 0 4px 40px var(--gold-glow);
  position: relative;
  overflow: hidden;
}

.hero-panel::before {
  content: '₿';
  position: absolute;
  right: -20px;
  top: -30px;
  font-size: 200px;
  font-weight: 700;
  color: var(--gold-glow);
  opacity: 0.3;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  position: relative;
  z-index: 1;
}

.hero-card {
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.2s ease;
}

.hero-card:hover {
  border-color: var(--gold-3);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--gold-glow);
}

.hero-card span {
  font-size: 12px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-card strong {
  font-size: 26px;
  font-family: var(--mono);
  font-weight: 600;
  color: var(--text-1);
}

.hero-card--big {
  grid-column: span 1;
  min-height: 120px;
  background: linear-gradient(135deg, var(--gold-glow) 0%, var(--bg-2) 50%);
  border-color: var(--gold-3);
}

.hero-card--big strong {
  background: linear-gradient(135deg, var(--gold-1), var(--gold-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 32px;
}

.hero-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.hero-head h2 {
  margin: 0;
  font-size: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.btc-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--gold-1), var(--gold-2));
  border-radius: 50%;
  font-size: 20px;
  font-weight: 700;
  color: #000;
  box-shadow: 0 0 20px var(--gold-glow-strong);
}

.hero-sub {
  color: var(--text-2);
  font-size: 13px;
  margin: 4px 0 0;
}

.miner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.miner-card {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all 0.2s ease;
  animation: fadeIn 240ms ease;
}

.miner-card:hover {
  border-color: var(--gold-3);
  background: var(--bg-card-hover);
  box-shadow: 0 0 20px var(--gold-glow);
}

.miner-card.online {
  border-left: 3px solid var(--accent);
}

.miner-card.offline {
  border-left: 3px solid var(--danger-dim);
  opacity: 0.7;
}

.miner-card.hot {
  border-left: 3px solid var(--warn);
}

.miner-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.miner-name {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
}

.miner-sub {
  margin: 2px 0 0;
  color: var(--text-3);
  font-size: 11px;
  font-family: var(--mono);
}

.status-pill {
  font-size: 10px;
  border-radius: 20px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  color: var(--text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-pill.online {
  border-color: var(--accent-dim);
  color: var(--accent);
  background: rgba(39, 213, 165, 0.1);
}

.status-pill.hot {
  border-color: var(--warn);
  color: var(--warn);
  background: rgba(255, 180, 84, 0.1);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.metric {
  background: var(--bg-0) !important;
  border: 1px solid var(--line) !important;
  border-radius: 8px;
  padding: 8px;
  text-align: center;
}

.metric span {
  display: block;
  font-size: 10px;
  color: var(--text-3);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.metric strong {
  display: block;
  font-size: 14px;
  font-family: var(--mono);
  color: var(--text-1);
  font-weight: 500;
}

.card-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.pool-select {
  flex: 1;
  background: var(--bg-0) !important;
  border: 1px solid var(--line) !important;
  border-radius: 8px;
  color: var(--text-1) !important;
  padding: 8px 12px;
  font-size: 12px;
  font-family: var(--display);
}

.pool-select:focus {
  outline: none;
  border-color: var(--gold-2) !important;
}

.btn {
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--display);
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn.primary {
  background: linear-gradient(135deg, var(--gold-1), var(--gold-2));
  color: #000;
}

.btn.primary:hover {
  box-shadow: 0 4px 20px var(--gold-glow-strong);
  transform: translateY(-1px);
}

.btn.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-2);
}

.btn.ghost:hover {
  border-color: var(--gold-3);
  color: var(--gold-1);
}

.btn.warn {
  background: linear-gradient(135deg, var(--warn), #e09530);
  color: #000;
}

.btn.tiny {
  padding: 6px 12px;
  font-size: 11px;
  background: linear-gradient(135deg, var(--gold-1), var(--gold-2)) !important;
  color: #000 !important;
  border: none !important;
}

.btn.tiny:hover {
  box-shadow: 0 0 15px var(--gold-glow-strong) !important;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  z-index: 30;
}

.auth-card {
  width: min(420px, calc(100vw - 24px));
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line-gold);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 0 60px var(--gold-glow);
}

.auth-card h2 {
  margin: 0;
  font-size: 24px;
  background: linear-gradient(135deg, var(--gold-1), var(--gold-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-card p {
  margin: 0;
  color: var(--text-2);
  font-size: 13px;
}

.auth-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-card input {
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  color: var(--text-1);
  font-size: 14px;
  font-family: var(--display);
}

.auth-card input:focus {
  outline: none;
  border-color: var(--gold-2);
}

.auth-card .btn {
  margin-top: 8px;
}

.auth-error {
  color: var(--danger);
  font-size: 12px;
}

.overlay-downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.overlay-downloads .mono {
  font-size: 11px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
}

.download-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}

.download-card strong {
  display: block;
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--gold-1);
}

.download-card p {
  margin: 0 0 10px;
  font-size: 12px;
  color: var(--text-2);
}

.download-card pre {
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  font-size: 11px;
  font-family: var(--mono);
  color: var(--text-2);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

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

.user-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.user-card h3 {
  margin: 0;
  font-size: 18px;
}

.user-card label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: var(--text-2);
}

.user-card input, .user-card select {
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  color: var(--text-1);
  font-size: 13px;
}

.user-card input:focus, .user-card select:focus {
  outline: none;
  border-color: var(--gold-2);
}

.user-result {
  font-size: 12px;
  padding: 8px;
  border-radius: 6px;
}

.user-result.error {
  background: rgba(255, 95, 86, 0.1);
  color: var(--danger);
}

.user-result.success {
  background: rgba(39, 213, 165, 0.1);
  color: var(--accent);
}

.pool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.pool-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pool-item {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pool-item:hover {
  border-color: var(--gold-3);
}

.pool-form {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pool-form h3 {
  margin: 0 0 8px;
}

.pool-form label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: var(--text-2);
}

.pool-form input {
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  color: var(--text-1);
  font-size: 13px;
}

.pool-form input:focus {
  outline: none;
  border-color: var(--gold-2);
}

.pool-form-footer {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.miner-config-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.miner-config-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.miner-config-item input {
  flex: 1;
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  color: var(--text-1);
  font-size: 13px;
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sort-controls label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-2);
}

.sort-controls select {
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text-1);
  padding: 6px 10px;
  font-size: 12px;
}

.sort-controls select:focus {
  outline: none;
  border-color: var(--gold-2);
}

.mono { font-family: var(--mono); }
.dim { color: var(--text-3); }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-gold {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.5; }
}

@media (max-width: 980px) {
  .pool-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .layout { padding: 12px; }
  .topbar { 
    flex-direction: column; 
    align-items: flex-start; 
    gap: 12px;
    padding: 14px;
  }
  .topbar h1 { font-size: 22px; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .hero-card strong { font-size: 20px; }
  .hero-card--big strong { font-size: 26px; }
  .hero-panel::before { font-size: 120px; right: -10px; top: -20px; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .miner-grid { grid-template-columns: 1fr; }
  .panel { padding: 12px; }
  .panel-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .download-grid { grid-template-columns: 1fr; }
  .user-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card--big { min-height: 100px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px), (pointer: coarse) {
  body {
    font-size: 0.95rem;
  }
  .layout {
    max-width: 100%;
    padding: 12px;
  }
  .hero-panel,
  .panel,
  .miners-panel,
  .collapsible-section {
    padding: 16px;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .panel-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .panel-body-head,
  .card-actions,
  .overlay-downloads {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .panel-body .btn,
  .panel-body button,
  .panel-body .btn.warn,
  .panel-body .btn.ghost,
  .btn.apply-btn {
    width: 100%;
  }
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .auth-card {
    width: min(100%, 360px);
  }
}

@media (pointer: coarse) {
  .layout {
    padding: 12px;
    max-width: 100%;
  }
  .miner-grid,
  .download-grid,
  .user-grid,
  .pool-grid {
    grid-template-columns: 1fr;
  }
  .panel,
  .miners-panel,
  .collapsible-section {
    padding: 14px;
  }
}