:root {
  --bg-top: #f8f6ef;
  --bg-bottom: #d8efe6;
  --ink: #152525;
  --ink-soft: #43605d;
  --accent: #0f766e;
  --accent-soft: #49b7a9;
  --panel: rgba(255, 255, 255, 0.78);
  --line: rgba(16, 81, 75, 0.15);
  --shadow: 0 16px 40px rgba(22, 69, 66, 0.13);
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.1rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background: linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
  min-height: 100vh;
}

.backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle at 10% 10%, rgba(255, 255, 255, 0.8), transparent 45%),
    radial-gradient(circle at 90% 85%, rgba(129, 187, 176, 0.45), transparent 40%);
}

.app-shell {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
  display: grid;
  gap: var(--space-3);
}

.hero {
  animation: rise 0.7s ease-out;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  font-size: 0.75rem;
  margin: 0;
}

h1 {
  font-family: "DM Serif Display", serif;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1;
  margin: 0.2rem 0 0.5rem;
}

.subtitle {
  max-width: 60ch;
  color: var(--ink-soft);
  margin: 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(4px);
}

.hidden {
  display: none;
}

#dashboardContent {
  display: grid;
  gap: var(--space-3);
}

#dashboardContent.hidden {
  display: none;
}

.filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  padding: var(--space-3);
}

.filter-item {
  display: grid;
  gap: var(--space-1);
}

label {
  font-size: 0.82rem;
  color: var(--ink-soft);
}

select {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  padding: 0.55rem;
  font-family: inherit;
}

input[type="text"] {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  padding: 0.55rem;
  font-family: inherit;
}

input[type="file"] {
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  padding: 0.5rem;
  font-family: inherit;
}

button {
  border: 1px solid rgba(16, 102, 96, 0.35);
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.95), rgba(13, 148, 136, 0.95));
  color: #fff;
  font-family: inherit;
  font-weight: 600;
  padding: 0.62rem 1rem;
  cursor: pointer;
  align-self: end;
}

button:hover {
  filter: brightness(1.05);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.upload-panel {
  padding: var(--space-3);
}

.upload-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: end;
}

.upload-status {
  margin: var(--space-2) 0 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.kpis {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.kpi {
  padding: var(--space-3);
  animation: rise 0.55s ease-out;
}

.kpi h3 {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.85rem;
  font-weight: 500;
}

.kpi .value {
  margin-top: var(--space-1);
  font-size: 1.7rem;
  font-weight: 700;
}

.charts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin: 0;
}

.chart-panel {
  padding: var(--space-3);
}

.top-trend-panel {
  padding: var(--space-3);
}

.heatmap-panel {
  padding: var(--space-3);
}

.heatmap-wrap {
  overflow: auto;
}

.heatmap-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.heatmap-table th,
.heatmap-table td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.5rem;
  text-align: center;
  min-width: 96px;
}

.heatmap-table th:first-child,
.heatmap-table td:first-child {
  text-align: left;
  position: sticky;
  left: 0;
  background: rgba(255, 255, 255, 0.95);
}

.chart-panel h2,
.insights-grid h2,
.comments-panel h2 {
  margin: 0 0 var(--space-2);
  font-size: 1rem;
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.insights-grid .panel {
  padding: var(--space-3);
}

.word-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.word-list li {
  background: rgba(37, 136, 125, 0.11);
  border: 1px solid rgba(18, 104, 96, 0.2);
  border-radius: 999px;
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
}

.comments-panel {
  padding: var(--space-3);
}

.comment-controls {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.comment-list {
  display: grid;
  gap: var(--space-2);
  max-height: 320px;
  overflow: auto;
}

.comment-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: var(--space-2);
  background: rgba(255, 255, 255, 0.75);
}

.comment-meta {
  font-size: 0.74rem;
  color: var(--ink-soft);
}

.comment-body {
  margin-top: var(--space-1);
  font-size: 0.92rem;
}

mark {
  background: rgba(252, 211, 77, 0.45);
  color: inherit;
  padding: 0 0.1rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .kpis {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .charts,
  .insights-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .filters {
    grid-template-columns: 1fr;
  }

  .kpis {
    grid-template-columns: 1fr;
  }

  .comment-controls {
    grid-template-columns: 1fr;
  }

  .upload-controls {
    grid-template-columns: 1fr;
  }
}