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

/* ─── THEME VARIABLES ───────────────────────────────────────── */
:root, body[data-theme="dark"] {
  --bg:            #060d1a;
  --bg2:           #0a1426;
  --panel:         #0b1727;
  --panel2:        #0e1c30;
  --border:        #1c3452;
  --border2:       #2a4e78;
  --border-color:  #1c3452;
  --text-color:    #8db8d8;
  --text-bright:   #daeeff;
  --text-dim:      #3a587a;
  --link-color:    #00e5ff;
  --link-bg-hover: #0e1c30;
  --active-bg:     #00e5ff;
  --active-text:   #060d1a;
  --accent:        #00e5ff;
  --accent-dim:    rgba(0,229,255,0.1);
  --accent-glow:   rgba(0,229,255,0.35);
  --ask-color:     #00e5ff;
  --bid-color:     #ffa040;
  --pos-color:     #00dd77;
  --neg-color:     #ff4466;
  --chart-bg:      rgba(0,0,0,0);
}

body[data-theme="light"] {
  --bg:            #eef4fc;
  --bg2:           #f5f8ff;
  --panel:         #ffffff;
  --panel2:        #f0f5ff;
  --border:        #c0d2ea;
  --border2:       #8090b8;
  --border-color:  #c0d2ea;
  --text-color:    #2c3e5a;
  --text-bright:   #0a1530;
  --text-dim:      #8090b0;
  --link-color:    #0055cc;
  --link-bg-hover: #e8f0ff;
  --active-bg:     #0055cc;
  --active-text:   #ffffff;
  --accent:        #0055cc;
  --accent-dim:    rgba(0,85,204,0.09);
  --accent-glow:   rgba(0,85,204,0.3);
  --ask-color:     #0055cc;
  --bid-color:     #c06800;
  --pos-color:     #007744;
  --neg-color:     #cc2244;
  --chart-bg:      rgba(0,0,0,0);
}

/* ─── BASE ───────────────────────────────────────────────────── */
html { font-size: 15px; }

body {
  font-family: 'Roboto', sans-serif;
  background: var(--bg);
  color: var(--text-color);
  min-height: 100vh;
  transition: background 0.25s, color 0.25s;
  line-height: 1.5;
}

/* scanlines overlay — dark mode only */
#scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0,0,0,0.035) 3px,
    rgba(0,0,0,0.035) 4px
  );
  pointer-events: none;
  z-index: 9999;
  transition: opacity 0.25s;
}
body[data-theme="light"] #scanlines { opacity: 0; }

/* scrollbar */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ─── WRAP ───────────────────────────────────────────────────── */
#wrap {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 18px 40px;
  animation: fadeUp 0.35s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── TOP STRIP ─────────────────────────────────────────────── */
#top-strip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0;
  font-size: 0.72rem;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  letter-spacing: 0.03em;
}
#top-strip .strip-label {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 0.68rem;
  margin-right: 0.2rem;
}
#top-strip a {
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.2s;
}
#top-strip a:hover { color: var(--accent); }
#top-strip .sep { color: var(--border2); }

/* ─── HEADER ─────────────────────────────────────────────────── */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0 0.9rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.4rem;
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-title {
  font-family: 'Roboto', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: 0.1em;
  line-height: 1;
}
.site-title .prefix { color: var(--accent); }

#lastDataInfo {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme toggle */
.theme-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}
.theme-switcher input { display: none; }
.theme-label {
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.toggle-track {
  position: relative;
  width: 38px;
  height: 19px;
  background: var(--border);
  border: 1px solid var(--border2);
  border-radius: 10px;
  transition: border-color 0.2s, background 0.2s;
}
.toggle-track::before {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 13px; height: 13px;
  background: var(--text-dim);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}
.theme-switcher input:checked + .toggle-track {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.theme-switcher input:checked + .toggle-track::before {
  transform: translateX(19px);
  background: var(--accent);
}

#repoLink {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px; height: 26px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}
#repoLink:hover { color: var(--accent); }
#repoLink svg { width: 20px; height: 20px; fill: currentColor; display: block; }

/* ─── MAIN LAYOUT ────────────────────────────────────────────── */
#main-content {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

/* ─── LEFT PANEL ─────────────────────────────────────────────── */
.left-panel {
  width: 33.33%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.panel-label {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 400;
  padding: 0.4rem 0 0.6rem;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
}

/* ─── CATEGORY TABS ──────────────────────────────────────────── */
#categoryTabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.category-tab {
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  border-radius: 3px;
  cursor: pointer;
  font-family: 'Roboto', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.15s;
  line-height: 1.4;
}
.category-tab:hover {
  border-color: var(--border2);
  color: var(--text-color);
  background: var(--panel);
}
.category-tab.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ─── ITEM GRID ──────────────────────────────────────────────── */
#itemLinks {
  display: flex;
  flex-direction: row;
  gap: 0.5rem;
}

#itemLinks a {
  box-sizing: border-box;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--panel);
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s, transform 0.15s;
}
#itemLinks a:hover {
  border-color: var(--border2);
  background: var(--panel2);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.35);
}
#itemLinks a.active {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 0 1px var(--accent), 0 0 14px var(--accent-glow);
  transform: none;
}
#itemLinks a svg { width: 28px; height: 28px; }

/* ─── CHART AREA ─────────────────────────────────────────────── */
#chart-container {
  flex-grow: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#currentItemName {
  text-align: center;
  font-family: 'Roboto', sans-serif;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-bright);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  min-height: 1.6em;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0 0.6rem;
  border-bottom: 1px solid var(--border);
}

#canvas-wrapper {
  position: relative;
  height: 55vh;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  padding: 6px;
}
/* corner brackets */
#canvas-wrapper::before,
#canvas-wrapper::after {
  content: '';
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--accent);
  border-style: solid;
  pointer-events: none;
  z-index: 2;
}
#canvas-wrapper::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; border-radius: 2px 0 0 0; }
#canvas-wrapper::after  { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; border-radius: 0 0 2px 0; }

/* ─── CONTROLS ───────────────────────────────────────────────── */
#timeRangeButtons,
#levelButtons {
  display: flex;
  gap: 0.4rem;
  justify-content: center;
  flex-wrap: wrap;
  align-items: center;
}

#timeRangeButtons button,
#levelButtons button {
  padding: 0.22rem 0.7rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  border-radius: 3px;
  font-family: 'Roboto', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.15s;
  line-height: 1.5;
}
#timeRangeButtons button:hover,
#levelButtons button:hover {
  border-color: var(--border2);
  color: var(--text-color);
  background: var(--panel);
}
#timeRangeButtons button.active,
#levelButtons button.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* points toggle created inline in JS — style via parent */
#timeRangeButtons label {
  display: inline-flex !important;
  align-items: center;
  gap: 0.35rem !important;
  font-size: 0.68rem;
  color: var(--text-dim);
  cursor: pointer;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-left: 0.3rem !important;
}
#timeRangeButtons label input { cursor: pointer; accent-color: var(--accent); }

/* ─── TREND TABLE ────────────────────────────────────────────── */
#trendTableContainer {
  width: 100%;
  margin-top: 2.5rem;
}

.trend-note {
  font-size: 0.8rem;
  color: var(--text-color);
  line-height: 1.7;
  margin-top: 1.25rem;
  max-width: 80ch;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  background: var(--panel);
  border-radius: 3px;
}
.trend-note strong {
  color: var(--text-bright);
}

#trendTableContainer h4 {
  font-family: 'Roboto', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

#trendTabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.trend-tab {
  padding: 0.28rem 0.8rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  border-radius: 3px;
  cursor: pointer;
  font-family: 'Roboto', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.15s;
  line-height: 1.5;
}
.trend-tab:hover {
  border-color: var(--border2);
  color: var(--text-color);
}
.trend-tab.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.trend-panel { display: none; gap: 1.5rem; }
.trend-panel.active { display: flex; }

.trend-sublabel {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  text-transform: uppercase;
  padding-bottom: 0.4rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.trend-sublabel-pos { color: var(--pos-color); }
.trend-sublabel-neg { color: var(--neg-color); }

.trend-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.96rem;
}
.trend-table thead th {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.81rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
}
.trend-table thead th:not(:first-child) { text-align: right; }
.trend-table tbody tr { transition: background 0.12s; }
.trend-table tbody tr:hover { background: var(--panel); }
.trend-table tbody td {
  padding: 0.35rem 0.6rem;
  border-bottom: 1px solid var(--border);
  text-transform: capitalize;
}
.trend-table tbody td:not(:first-child) { text-align: right; }
.pct-pos { color: var(--pos-color); }
.pct-neg { color: var(--neg-color); }