/* ============================================
   Hyperliquid Monitor PWA — Design System
   ============================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
  --bg-primary: #000000;
  --bg-card: #0a0a0a;
  --bg-header: #080808;
  --bg-chip: #0d0d0d;

  --green: #00FF9D;
  --green-dim: rgba(0, 255, 157, 0.12);
  --green-border: rgba(0, 255, 157, 0.25);
  --red: #FF2E2E;
  --red-dim: rgba(255, 46, 46, 0.12);
  --red-border: rgba(255, 46, 46, 0.25);
  --blue: #4A90FF;
  --blue-dim: rgba(74, 144, 255, 0.15);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.38);
  --text-ghost: rgba(255, 255, 255, 0.15);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  /* Safe area for notched phones */
  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hidden {
  display: none !important;
}

/* --- Loading Screen --- */
#loading-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  gap: 20px;
}

.loader-pulse {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(0.3); opacity: 0.2; }
  50% { transform: scale(1); opacity: 0.8; }
}

.loader-text {
  color: var(--text-tertiary);
  font-size: 13px;
  letter-spacing: 1px;
}

/* --- App Layout --- */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding-top: var(--sat);
  padding-bottom: var(--sab);
}

/* --- Header --- */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  padding-top: calc(14px + var(--sat));
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-icon {
  font-size: 18px;
  filter: drop-shadow(0 0 6px var(--green));
}

.header-title {
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 1.5px;
  color: var(--text-primary);
}

/* --- Sentiment Badge --- */
#sentiment-badge {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.5px;
  border: 1.5px solid transparent;
  transition: all 0.3s ease;
}

#sentiment-badge.bullish {
  color: var(--green);
  background: var(--green-dim);
  border-color: var(--green);
}

#sentiment-badge.bearish {
  color: var(--red);
  background: var(--red-dim);
  border-color: var(--red);
}

#sentiment-badge.mild-bullish {
  color: #A5D6A7;
  background: rgba(165, 214, 167, 0.1);
  border-color: #A5D6A7;
}

#sentiment-badge.mild-bearish {
  color: #EF9A9A;
  background: rgba(239, 154, 154, 0.1);
  border-color: #EF9A9A;
}

#sentiment-badge.extreme-bullish {
  color: #1B5E20;
  background: rgba(27, 94, 32, 0.2);
  border-color: #1B5E20;
}

#sentiment-badge.extreme-bearish {
  color: #B71C1C;
  background: rgba(183, 28, 28, 0.2);
  border-color: #B71C1C;
}

#sentiment-badge.neutral {
  color: #888;
  background: rgba(136, 136, 136, 0.1);
  border-color: #888;
}

/* --- Select Dropdown (Range) --- */
.select-wrapper {
  position: relative;
  min-width: 80px;
}

.select-wrapper::after {
  content: '▼';
  font-size: 8px;
  color: var(--text-tertiary);
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

#range-select {
  appearance: none;
  -webkit-appearance: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 28px 6px 12px;
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
  width: 100%;
  transition: all 0.2s ease;
}

#range-select:focus {
  border-color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

#range-select option {
  background: #1a1a1a;
  color: #fff;
}

/* --- Alert Flash --- */
#alert-flash {
  position: fixed;
  inset: 0;
  z-index: 200;
  pointer-events: none;
  border: 12px solid transparent;
  animation: rainbowBorder 1s linear infinite;
}

@keyframes rainbowBorder {
  0%   { border-color: hsla(0, 80%, 60%, 0.35); }
  20%  { border-color: hsla(72, 80%, 60%, 0.35); }
  40%  { border-color: hsla(144, 80%, 60%, 0.35); }
  60%  { border-color: hsla(216, 80%, 60%, 0.35); }
  80%  { border-color: hsla(288, 80%, 60%, 0.35); }
  100% { border-color: hsla(360, 80%, 60%, 0.35); }
}

/* --- Main Content --- */
#content {
  flex: 1;
  padding: 16px;
  padding-bottom: calc(16px + var(--sab));
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* --- Metric Cards --- */
.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 14px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.hero-card {
  padding: 32px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Rainbow Flash Animation */
@keyframes rainbow-glow {
  0% { box-shadow: 0 0 20px rgba(255, 0, 0, 0.3), inset 0 0 10px rgba(255, 0, 0, 0.1); border-color: rgba(255, 0, 0, 0.5); }
  20% { box-shadow: 0 0 20px rgba(255, 154, 0, 0.3), inset 0 0 10px rgba(255, 154, 0, 0.1); border-color: rgba(255, 154, 0, 0.5); }
  40% { box-shadow: 0 0 20px rgba(208, 222, 33, 0.3), inset 0 0 10px rgba(208, 222, 33, 0.1); border-color: rgba(208, 222, 33, 0.5); }
  60% { box-shadow: 0 0 20px rgba(79, 220, 74, 0.3), inset 0 0 10px rgba(79, 220, 74, 0.1); border-color: rgba(79, 220, 74, 0.5); }
  80% { box-shadow: 0 0 20px rgba(63, 218, 216, 0.3), inset 0 0 10px rgba(63, 218, 216, 0.1); border-color: rgba(63, 218, 216, 0.5); }
  100% { box-shadow: 0 0 20px rgba(47, 201, 226, 0.3), inset 0 0 10px rgba(47, 201, 226, 0.1); border-color: rgba(47, 201, 226, 0.5); }
}

.hero-card.updating {
  animation: rainbow-glow 1.5s linear infinite;
}

.hero-card.bullish-border {
  border-color: rgba(0, 255, 157, 0.3);
  box-shadow: 0 0 25px rgba(0, 255, 157, 0.1);
}

.hero-card.bearish-border {
  border-color: rgba(255, 46, 46, 0.3);
  box-shadow: 0 0 25px rgba(255, 46, 46, 0.1);
}

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

.metric-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.metric-delta {
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(4px);
}

.metric-delta.visible {
  opacity: 1;
  transform: translateY(0);
}

.metric-delta.positive {
  color: var(--green);
  background: var(--green-dim);
  border: 1px solid var(--green-border);
}

.metric-delta.negative {
  color: var(--red);
  background: var(--red-dim);
  border: 1px solid var(--red-border);
}

.metric-value {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1;
  font-family: var(--font-mono);
}

.metric-value.green { color: var(--green); text-shadow: 0 0 30px rgba(0, 255, 157, 0.2); }
.metric-value.red { color: var(--red); text-shadow: 0 0 30px rgba(255, 46, 46, 0.2); }

/* --- Chart Section --- */
#chart-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
}

.chart-container {
  position: relative;
  height: 260px;
  width: 100%;
}
.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* --- Footer --- */
#app-footer {
  text-align: center;
  padding: 12px 0 24px;
}

#last-update {
  font-size: 12px;
  color: var(--text-ghost);
}

/* --- Utility Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

#content > * {
  animation: fadeIn 0.4s ease forwards;
}

#content > *:nth-child(1) { animation-delay: 0.05s; }
#content > *:nth-child(2) { animation-delay: 0.1s; }
#content > *:nth-child(3) { animation-delay: 0.15s; }
#content > *:nth-child(4) { animation-delay: 0.2s; }
#content > *:nth-child(5) { animation-delay: 0.25s; }
#content > *:nth-child(6) { animation-delay: 0.3s; }

/* Pull-to-refresh hint */
#content {
  overscroll-behavior-y: contain;
}

/* --- Responsive polish --- */
@media (min-width: 500px) {
  #content {
    max-width: 480px;
    margin: 0 auto;
  }
}

/* Landscape / tablet */
@media (min-width: 768px) {
  #content {
    max-width: 600px;
  }
  .hero-card .metric-value {
    font-size: 36px;
  }
}

/* Asset Selector */
#asset-selector {
  display: flex;
  gap: 8px;
  width: 100%;
  padding: 0 4px;
  margin-top: 10px;
  margin-bottom: 20px;
  overflow-x: auto;
  align-items: center;
  justify-content: space-between;
}

.asset-btn {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  padding: 10px 0;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  white-space: nowrap;
}

.asset-btn:active {
  transform: scale(0.96);
}

.asset-btn.active {
  background: rgba(0, 255, 157, 0.15);
  border: 1px solid var(--color-green);
  color: var(--color-green);
  box-shadow: 0 0 15px rgba(0, 255, 157, 0.2);
}

/* Specific colors for different assets if needed */
.asset-btn[data-asset="btc"].active {
  border-color: #F7931A;
  color: #F7931A;
  background: rgba(247, 147, 26, 0.15);
  box-shadow: 0 0 15px rgba(247, 147, 26, 0.2);
}

.asset-btn[data-asset="eth"].active {
  border-color: #627EEA;
  color: #627EEA;
  background: rgba(98, 126, 234, 0.15);
  box-shadow: 0 0 15px rgba(98, 126, 234, 0.2);
}

.asset-btn[data-asset="hedge"].active {
  border-color: #00D2FF;
  color: #00D2FF;
  background: rgba(0, 210, 255, 0.15);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.2);
}

/* Secondary Stats (Long/Short) */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.secondary-card {
  padding: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-radius: var(--radius-md);
}

.secondary-card .metric-label {
  font-size: 11px;
  color: var(--text-tertiary);
  font-weight: 600;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.secondary-card .metric-value {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.metric-value.small.green { color: var(--green); }
.metric-value.small.red { color: var(--red); }