/* ═══════════════════════════════════════════
   EtherFlow — Crypto Whale Tracker
   Dark Terminal / Bloomberg-style aesthetic
═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Poppins:wght@400;500;600;700;800&family=Space+Mono:wght@400;700&display=swap');

/* ── CSS Variables ───────────────────────── */
:root {
  --bg-void:        #0e0818;
  --bg-panel:       #140d24;
  --bg-card:        #1a0f2e;
  --bg-input:       #120b20;
  --border:         #2a1a45;
  --border-bright:  #3d2560;

  --cyan:           #00e5e5;
  --cyan-dim:       #00b8b8;
  --cyan-glow:      rgba(0, 229, 229, 0.15);
  --teal:           #00c8c8;

  --accent:         #c9ff00;
  --accent-glow:    rgba(201, 255, 0, 0.18);
  --purple:         #6e348c;
  --purple-bright:  #8a42ad;

  --whale-red:      #e05c8c;
  --whale-orange:   #f4d0d0;
  --dolphin-yellow: #c9ff00;

  --text-primary:   #f4d0d0;
  --text-secondary: #8a6fa8;
  --text-muted:     #4a3060;

  --font-mono:      'Share Tech Mono', monospace;
  --font-display:   'Poppins', sans-serif;
  --font-data:      'Space Mono', monospace;
}

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

html, body {
  background: radial-gradient(ellipse at top left, #1a0f2e 0%, #0e0818 60%, #080510 100%);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Scanline overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.03) 2px,
    rgba(0,0,0,0.03) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ── Navbar ──────────────────────────────── */
.ef-navbar {
  background: linear-gradient(90deg, var(--bg-panel) 0%, rgba(110,52,140,0.08) 100%);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.ef-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-transform: uppercase;
  text-shadow: 0 0 20px var(--accent-glow);
}

.ef-logo span {
  color: var(--text-secondary);
  font-weight: 500;
}

.ef-status {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ef-status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
  50% { opacity: 0.6; box-shadow: 0 0 0 4px transparent; }
}

/* ── Layout ──────────────────────────────── */
.ef-main {
  padding: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* ── Stat Cards ──────────────────────────── */
.ef-stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.ef-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s;
}

.ef-stat::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--purple);
}

.ef-stat:hover { border-color: var(--border-bright); }

.ef-stat-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.4rem;
}

.ef-stat-value {
  font-family: var(--font-data);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.ef-stat-value.whale { color: var(--whale-red); }
.ef-stat-value.normal { color: var(--teal); }

/* ── Input Panel ─────────────────────────── */
.ef-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.ef-panel-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}

/* File Upload Zone */
.ef-upload-zone {
  border: 1px dashed var(--border-bright);
  border-radius: 4px;
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--bg-input);
  margin-bottom: 0.75rem;
}

.ef-upload-zone:hover,
.ef-upload-zone.drag-over {
  border-color: var(--cyan-dim);
  background: rgba(0, 229, 255, 0.03);
}

.ef-upload-zone input[type="file"] { display: none; }

.ef-upload-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.ef-upload-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.ef-upload-label strong { color: var(--cyan); }

/* Textarea */
.ef-textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.7;
  padding: 0.75rem;
  resize: vertical;
  min-height: 120px;
  transition: border-color 0.2s;
  outline: none;
}

.ef-textarea:focus { border-color: var(--purple-bright); }
.ef-textarea::placeholder { color: var(--text-muted); }

/* Slider */
.ef-slider-wrap {
  margin-top: 1rem;
}

.ef-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.ef-slider-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.ef-slider-val {
  font-family: var(--font-data);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

.ef-slider-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--dolphin-yellow);
  margin-left: 0.4rem;
}

input[type="range"].ef-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 3px;
  background: var(--border-bright);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"].ef-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-glow);
  transition: transform 0.15s;
}

input[type="range"].ef-slider::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.ef-slider-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.3rem;
}

.ef-slider-tick {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-muted);
}

/* Run Button */
.ef-btn {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--purple);
  color: var(--accent);
  padding: 0.6rem 2rem;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
  margin-top: 1rem;
  width: 100%;
}

.ef-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--purple), var(--purple-bright));
  transform: translateX(-100%);
  transition: transform 0.2s;
  z-index: -1;
}

.ef-btn:hover {
  color: var(--accent);
  border-color: var(--purple-bright);
  box-shadow: 0 0 20px rgba(110, 52, 140, 0.4);
}

.ef-btn:hover::before { transform: translateX(0); }
.ef-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* ── Chart Container ─────────────────────── */
.ef-chart-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  min-height: 420px;
  position: relative;
}

#chart {
  width: 100%;
  overflow: visible;
}

/* Loading Spinner */
.ef-spinner {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(5,5,8,0.85);
  border-radius: 4px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 10;
}

.ef-spinner.active { display: flex; }

.ef-spinner-ring {
  width: 36px; height: 36px;
  border: 2px solid var(--border-bright);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.ef-spinner-text {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

/* ── Tooltip ─────────────────────────────── */
.ef-tooltip {
  position: fixed;
  background: var(--bg-panel);
  border: 1px solid var(--border-bright);
  border-radius: 4px;
  padding: 0.6rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-primary);
  pointer-events: none;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.15s;
  max-width: 220px;
  line-height: 1.8;
}

.ef-tooltip.visible { opacity: 1; }

.ef-tooltip-title {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.ef-tooltip-whale { color: var(--whale-red); }
.ef-tooltip-dolphin { color: var(--dolphin-yellow); }
.ef-tooltip-normal { color: var(--teal); }

.ef-tooltip-row { display: flex; justify-content: space-between; gap: 1rem; }
.ef-tooltip-key { color: var(--text-secondary); }
.ef-tooltip-val { color: var(--accent); }

/* ── Alert / Error ───────────────────────── */
.ef-alert {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(255, 23, 68, 0.08);
  border: 1px solid rgba(255, 23, 68, 0.3);
  color: #ff8a80;
  border-radius: 4px;
  padding: 0.6rem 0.9rem;
  margin-top: 0.75rem;
  display: none;
}

.ef-alert.active { display: block; }

/* ── Legend ──────────────────────────────── */
.ef-legend {
  display: flex;
  gap: 1.5rem;
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.ef-legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.ef-legend-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── D3 SVG overrides ────────────────────── */
.ef-axis text {
  font-family: var(--font-mono) !important;
  font-size: 0.58rem !important;
  fill: var(--text-secondary) !important;
}

.ef-axis line, .ef-axis path {
  stroke: var(--border) !important;
}

.ef-gridlines line {
  stroke: var(--border) !important;
  stroke-dasharray: 2 4 !important;
}

/* Bubble animations */
.bubble-whale {
  animation: whale-pulse 2.5s ease-in-out infinite;
}

@keyframes whale-pulse {
  0%, 100% { opacity: 0.55; }
  50%       { opacity: 0.85; }
}

/* ── Results Table ───────────────────────── */
.ef-table-wrap {
  overflow-x: auto;
}

.ef-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.65rem;
}

.ef-table th {
  text-align: left;
  padding: 0.5rem 0.75rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 400;
}

.ef-table td {
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid rgba(30,34,53,0.5);
  color: var(--text-primary);
  white-space: nowrap;
}

.ef-table tr:hover td { background: rgba(255,255,255,0.02); }
.ef-table .row-whale td { color: var(--whale-red); }
.ef-table .row-dolphin td { color: var(--dolphin-yellow); }

.badge-whale {
  background: rgba(255,23,68,0.15);
  color: var(--whale-red);
  border: 1px solid rgba(255,23,68,0.3);
  padding: 0.1rem 0.5rem;
  border-radius: 2px;
  font-size: 0.6rem;
}

.badge-dolphin {
  background: rgba(255,214,0,0.1);
  color: var(--dolphin-yellow);
  border: 1px solid rgba(255,214,0,0.25);
  padding: 0.1rem 0.5rem;
  border-radius: 2px;
  font-size: 0.6rem;
}

.badge-blue-whale {
  background: rgba(255,109,0,0.12);
  color: var(--whale-orange);
  border: 1px solid rgba(255,109,0,0.3);
  padding: 0.1rem 0.5rem;
  border-radius: 2px;
  font-size: 0.6rem;
}

/* ── Responsive ──────────────────────────── */
@media (max-width: 768px) {
  .ef-main { padding: 1rem; }
  .ef-stat-value { font-size: 1.2rem; }
}

/* ── Chart & Table sizing ────────────────── */
#dual-chart {
    width: 100%;
    min-height: 580px;
    display: block;
    background: rgba(0,0,0,0.2);
    position: relative;
}

svg {
    display: block;
    overflow: visible;
}

/* ── Coin Selector ───────────────────────── */
.ef-coin-selector {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.ef-coin-selector-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.25rem;
}

.ef-coin-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.65rem 1rem;
  cursor: pointer;
  transition: all 0.18s ease;
  text-align: left;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.ef-coin-btn::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: transparent;
  transition: background 0.18s ease;
}

.ef-coin-btn:hover {
  border-color: var(--purple-bright);
  background: rgba(110,52,140,0.12);
}

.ef-coin-btn.active {
  border-color: var(--purple);
  background: rgba(110,52,140,0.18);
}

.ef-coin-btn.active::before {
  background: var(--accent);
}

.ef-coin-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-data);
  flex-shrink: 0;
}

.ef-coin-icon.btc  { background: rgba(247,147,26,0.15); color: #f7931a; border: 1px solid rgba(247,147,26,0.3); }
.ef-coin-icon.eth  { background: rgba(98,126,234,0.15); color: #627eea; border: 1px solid rgba(98,126,234,0.3); }
.ef-coin-icon.sol  { background: rgba(20,241,149,0.12); color: #14f195; border: 1px solid rgba(20,241,149,0.3); }

.ef-coin-info {
  flex: 1;
}

.ef-coin-name {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.ef-coin-pair {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ef-coin-badge {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.18s;
}

.ef-coin-btn.active .ef-coin-badge { opacity: 1; }

/* ── Table enhancements ──────────────────── */
.ef-table-wrap {
  overflow-x: auto;
  max-height: 280px;
  overflow-y: auto;
}

.ef-table-wrap::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

.ef-table-wrap::-webkit-scrollbar-track { background: transparent; }
.ef-table-wrap::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 2px; }