/* Solarized color palette */
:root {
  --base03: #002b36;
  --base02: #073642;
  --base01: #586e75;
  --base00: #657b83;
  --base0: #839496;
  --base1: #93a1a1;
  --base2: #eee8d5;
  --base3: #fdf6e3;
  --yellow: #b58900;
  --orange: #cb4b16;
  --red: #dc322f;
  --magenta: #d33682;
  --violet: #6c71c4;
  --blue: #268bd2;
  --cyan: #2aa198;
  --green: #859900;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  background-color: var(--base03);
  color: var(--base00);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.4;
}

body {
  display: flex;
  flex-direction: column;
}

/* Header with info panels */
header {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--base3);
  flex-shrink: 0;
}

.info-panel {
  padding: 12px 16px;
  text-align: center;
  color: var(--base3);
  background-color: var(--base03);
}

.info-panel:not(:last-child) {
  border-right: 1px solid var(--base02);
}

/* Chart container */
#chart {
  flex: 1;
  background-color: var(--base2);
  overflow: hidden;
}

/* Location button in header */
.location-btn {
  background: none;
  border: none;
  color: var(--yellow);
  cursor: pointer;
  font-size: inherit;
  font-family: inherit;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.location-btn:hover {
  color: var(--orange);
}

/* Location picker dialog */
.dialog-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  z-index: 100;
}

.dialog-backdrop.visible {
  opacity: 1;
  visibility: visible;
}

.dialog {
  background-color: var(--base02);
  border-radius: 8px;
  padding: 24px;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.dialog h2 {
  color: var(--base3);
  font-size: 18px;
  margin-bottom: 16px;
}

.dialog input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--base01);
  border-radius: 4px;
  background-color: var(--base03);
  color: var(--base3);
  font-size: 14px;
  margin-bottom: 8px;
}

.dialog input[type="text"]:focus {
  outline: none;
  border-color: var(--blue);
}

.dialog input[type="text"]::placeholder {
  color: var(--base01);
}

.dialog-hint {
  color: var(--base01);
  font-size: 12px;
  margin-bottom: 16px;
}

.dialog-error {
  color: var(--red);
  font-size: 12px;
  min-height: 18px;
  margin-bottom: 8px;
}

.dialog-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: background-color 0.15s;
}

.btn-primary {
  background-color: var(--blue);
  color: var(--base3);
}

.btn-primary:hover {
  background-color: var(--cyan);
}

.btn-secondary {
  background-color: var(--base01);
  color: var(--base3);
}

.btn-secondary:hover {
  background-color: var(--base00);
}

.btn-geo {
  background-color: var(--green);
  color: var(--base3);
}

.btn-geo:hover {
  background-color: var(--cyan);
}

/* Responsive adjustments */
@media (max-width: 600px) {
  header {
    grid-template-columns: 1fr;
  }

  .info-panel:not(:last-child) {
    border-right: none;
    border-bottom: 1px solid var(--base02);
  }

  .dialog {
    margin: 16px;
  }
}

/* Selection colors */
::selection {
  background-color: var(--magenta);
  color: var(--base3);
}