* {
  box-sizing: border-box;
}

:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --panel-soft: #f9fafb;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-contrast: #ffffff;
  --secondary: #6b7280;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

body.dark {
  --bg: #111827;
  --panel: #1f2937;
  --panel-soft: #111827;
  --text: #f9fafb;
  --muted: #9ca3af;
  --border: #374151;
  --accent: #3b82f6;
  --accent-contrast: #ffffff;
  --secondary: #4b5563;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 980px;
  margin: 32px auto;
  padding: 20px;
}

.header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

h1, h2, p {
  margin-top: 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.label {
  display: inline-block;
  margin-bottom: 10px;
  font-weight: bold;
}

textarea,
input[type="number"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  font-size: 1rem;
  background: var(--panel-soft);
  color: var(--text);
  outline: none;
}

textarea {
  min-height: 280px;
  resize: vertical;
}

textarea:focus,
input[type="number"]:focus {
  border-color: var(--accent);
}

.actions,
.goal-inputs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

button {
  padding: 12px 18px;
  font-size: 1rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-contrast);
}

button.secondary {
  background: var(--secondary);
}

.goal-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.goal-inputs input {
  max-width: 180px;
}

.progress-wrap {
  margin-top: 16px;
}

.progress-bar {
  width: 100%;
  height: 14px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  width: 0%;
  height: 100%;
  background: var(--accent);
  transition: width 0.2s ease;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat {
  text-align: center;
}

.value {
  font-size: 2rem;
  font-weight: bold;
  margin: 8px 0;
}

.muted,
small {
  color: var(--muted);
}

@media (max-width: 800px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .header {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  button,
  .goal-inputs input {
    width: 100%;
    max-width: none;
  }
}