@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap");

:root {
  --font-sans: "Manrope", "Inter", sans-serif;
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-strong: #1a1a1a;
  --line: rgba(255, 255, 255, 0.12);
  --text: #f5f5f7;
  --muted: #a1a1a6;
  --accent: #0071e3;
  --accent-soft: #2997ff;
  --heading: #ffffff;
  --radius: 16px;
  --max: 900px;
}

[data-theme="light"] {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-strong: #e8e8ed;
  --line: rgba(0, 0, 0, 0.1);
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #0071e3;
  --accent-soft: #2997ff;
  --heading: #1d1d1f;
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

/* Header */
.page-header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.back-link:hover {
  color: var(--accent-soft);
  text-decoration: underline;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--heading);
  margin: 0 0 0.25rem 0;
}

.page-subtitle {
  font-size: 1rem;
  color: var(--muted);
  margin: 0;
}

/* Main content */
.main-content {
  padding: 2rem 0 3rem;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--heading);
  margin: 0 0 1rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title i {
  color: var(--accent);
}

.linkedin-logo-link {
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
}

.linkedin-logo-link:hover {
  color: var(--accent-soft);
}

/* LinkedIn section */
.linkedin-content {
  min-height: 120px;
  padding: 1rem;
  background: var(--surface-strong);
  border-radius: 12px;
}

.article-body {
  margin: 0;
  color: var(--text);
}

.article-body p {
  margin: 0 0 1rem 0;
}

.article-body p:last-child {
  margin-bottom: 0;
}

/* Controls */
.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.control-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}

.control-label {
  color: var(--text);
}

.control-group input[type="range"] {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--surface-strong);
  border-radius: 4px;
  outline: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.control-group input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* Chart */
.chart-wrap {
  position: relative;
  background: var(--surface-strong);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
  overflow: hidden;
}

#chart {
  display: block;
  width: 100%;
  height: 400px;
  max-height: 60vh;
}

.chart-legend {
  margin: 0.75rem 0 0 0;
  font-size: 0.9rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.explanation {
  font-size: 0.9rem;
  color: var(--muted);
}

.explanation p {
  margin: 0 0 0.35rem 0;
}

.explanation p:last-child {
  margin-bottom: 0;
}

/* Footer */
.page-footer {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 0.9rem;
}

.page-footer a {
  color: var(--accent);
  text-decoration: none;
}

.page-footer a:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 640px) {
  .controls {
    grid-template-columns: 1fr;
  }

  #chart {
    width: 100%;
    height: auto;
  }
}