:root {
  --bg: #0a0e14;
  --bg-elev: #111722;
  --bg-elev-2: #161e2b;
  --border: #233044;
  --border-soft: #1b2533;
  --text: #e6edf6;
  --text-dim: #9aa9bd;
  --text-faint: #64748b;
  --accent: #16c784;
  --accent-dim: #0f9c66;
  --up: #16c784;
  --down: #ea3943;
  --shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.75);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 600px at 80% -10%, rgba(22, 199, 132, 0.08), transparent 60%),
    radial-gradient(900px 500px at 0% 0%, rgba(56, 116, 255, 0.06), transparent 55%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.app {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ---------- Header ---------- */
.site-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 0;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: #04110b;
  background: linear-gradient(135deg, var(--accent), #4ce0a8);
  box-shadow: 0 6px 18px -6px rgba(22, 199, 132, 0.6);
}

.brand-accent {
  color: var(--accent);
}

.search {
  display: flex;
  gap: 10px;
  flex: 1 1 320px;
  min-width: 260px;
}

.search-input {
  flex: 1;
  min-width: 0;
  padding: 11px 14px;
  font-size: 15px;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-input::placeholder {
  color: var(--text-faint);
}

.search-input:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px rgba(22, 199, 132, 0.16);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease,
    opacity 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #04110b;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.06);
}

.btn-ghost {
  background: var(--bg-elev-2);
  border-color: var(--border);
  color: var(--text);
}

.btn-ghost:hover:not(:disabled) {
  border-color: var(--accent-dim);
  color: var(--accent);
}

/* ---------- Content ---------- */
.content {
  flex: 1;
  padding: 8px 0 40px;
}

.message {
  margin: 8px 0 20px;
  padding: 13px 16px;
  border-radius: 10px;
  font-size: 14px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-dim);
}

.message.is-error {
  border-color: rgba(234, 57, 67, 0.4);
  background: rgba(234, 57, 67, 0.08);
  color: #ff8088;
}

.message.is-loading {
  display: flex;
  align-items: center;
  gap: 10px;
}

.spinner {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-top-color: var(--accent);
  animation: spin 0.7s linear infinite;
  flex: none;
}

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

/* ---------- Welcome ---------- */
.welcome {
  padding: 60px 0 24px;
  text-align: center;
}

.welcome-title {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.welcome-sub {
  margin: 0 auto 6px;
  max-width: 520px;
  color: var(--text-dim);
  font-size: 16px;
}

.welcome-hint {
  margin: 18px 0 0;
  color: var(--text-faint);
  font-size: 14px;
}

code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.9em;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border-soft);
  color: var(--accent);
}

/* ---------- Player card ---------- */
.player-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.player-head {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--border-soft);
  flex-wrap: wrap;
}

.player-id {
  display: flex;
  align-items: baseline;
  gap: 4px;
  min-width: 0;
}

.player-name {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.player-tag {
  color: var(--text-faint);
  font-size: 17px;
  font-weight: 500;
}

.player-score {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.1;
}

.score-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-faint);
}

.score-value {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 30px;
  font-weight: 700;
  margin-top: 3px;
}

.score-trend {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.score-change {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  font-weight: 700;
}

.score-context {
  font-size: 12px;
  color: var(--text-faint);
}

.refresh-icon {
  display: inline-flex;
  transition: transform 0.4s ease;
}

.btn.is-busy .refresh-icon {
  animation: spin 0.7s linear infinite;
}

.player-meta {
  display: flex;
  gap: 18px;
  padding: 12px 24px;
  font-size: 13px;
  color: var(--text-faint);
  border-bottom: 1px solid var(--border-soft);
}

/* ---------- Chart ---------- */
.chart {
  padding: 18px 20px 20px;
}

.range-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.range-btn {
  appearance: none;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  background: var(--bg-elev-2);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.range-btn:hover {
  color: var(--text);
  border-color: var(--border);
}

.range-btn.is-active {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: rgba(22, 199, 132, 0.1);
}

.chart-area {
  position: relative;
  width: 100%;
  height: 320px;
}

.chart-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  color: var(--text-dim);
  touch-action: pan-y;
}

.chart-svg[data-trend="up"] {
  color: var(--up);
}

.chart-svg[data-trend="down"] {
  color: var(--down);
}

.chart-grid {
  stroke: var(--border-soft);
  stroke-width: 1;
}

.chart-grid-label,
.chart-axis-label {
  fill: var(--text-faint);
  font-size: 11px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
}

.chart-area-fill {
  fill: url(#chart-fill);
}

.chart-fill-top {
  stop-color: var(--text-dim);
  stop-opacity: 0.28;
}

.chart-fill-bottom {
  stop-color: var(--text-dim);
  stop-opacity: 0;
}

.chart-svg[data-trend="up"] .chart-fill-top,
.chart-svg[data-trend="up"] .chart-fill-bottom {
  stop-color: var(--up);
}

.chart-svg[data-trend="down"] .chart-fill-top,
.chart-svg[data-trend="down"] .chart-fill-bottom {
  stop-color: var(--down);
}

.chart-line {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.chart-baseline {
  stroke: var(--text-faint);
  stroke-width: 1;
  stroke-dasharray: 4 4;
  opacity: 0.45;
}

.chart-cursor-line {
  stroke: var(--text-dim);
  stroke-width: 1;
  stroke-dasharray: 3 3;
  opacity: 0.7;
}

.chart-dot {
  fill: currentColor;
  stroke: var(--bg-elev);
  stroke-width: 2.5;
}

.chart-tooltip {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  box-shadow: 0 10px 26px -12px rgba(0, 0, 0, 0.85);
  white-space: nowrap;
  z-index: 2;
}

.chart-tooltip-date {
  font-size: 11px;
  color: var(--text-faint);
  margin-bottom: 2px;
}

.chart-tooltip-score {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.change-up {
  color: var(--up);
}

.change-down {
  color: var(--down);
}

.change-flat {
  color: var(--text-faint);
}

.history-empty {
  padding: 48px 24px;
  text-align: center;
  color: var(--text-faint);
  font-size: 14px;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 24px 0;
  text-align: center;
  color: var(--text-faint);
  font-size: 13px;
  border-top: 1px solid var(--border-soft);
}

@media (max-width: 560px) {
  .site-header {
    gap: 14px;
  }

  .player-head {
    padding: 18px 16px;
  }

  .player-score {
    margin-left: 0;
    align-items: flex-start;
  }

  .score-trend {
    justify-content: flex-start;
  }

  .player-meta {
    padding-left: 16px;
    padding-right: 16px;
  }

  .chart {
    padding: 16px 14px 18px;
  }

  .chart-area {
    height: 240px;
  }
}