/* ===== Base Variables ===== */
:root {
  --bg-color: #f5f7fa;
  --text-color: #1a1a1a;
  --card-bg: #fff;
  --card-border: #eee;
  --input-bg: #f8f9fa;
  --table-hover: #f9fbff;
  --shadow: rgba(0,0,0,0.05);
  --button-bg: #3b82f6;
  --button-hover: #2563eb;
}

/* ===== Body ===== */
body {
  font-family: 'Inter', 'Segoe UI', Roboto, Arial, sans-serif;
  margin: 40px;
  background: linear-gradient(135deg, var(--bg-color), #e4ecf7);
  color: var(--text-color);
  transition: background 0.3s, color 0.3s;
}

/* ===== Headings ===== */
h1, h2 { color: var(--text-color); }
h1 { text-align: center; font-weight: 700; margin-bottom: 1.5em; }

/* ===== Theme Toggle ===== */
.theme-toggle { text-align: center; margin-bottom: 20px; }
.theme-toggle select {
  padding: 8px 12px; border-radius: 8px;
  border: 1px solid #ccc; background-color: var(--input-bg);
  color: var(--text-color); font-size: 0.95rem;
}

/* ===== Blocks / Cards ===== */
.block {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 3px 10px var(--shadow);
  margin-bottom: 24px;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s;
}

/* ===== Form ===== */
.filter-form { display: flex; flex-wrap: wrap; gap: 12px; }
.form-group { display: flex; flex-direction: column; min-width: 150px; }
label { font-weight: 500; margin-bottom: 6px; }
select, button {
  padding: 8px 12px; border-radius: 8px; border: 1px solid #ccc;
  background-color: var(--input-bg); color: var(--text-color);
  font-size: 0.95rem; transition: all 0.2s;
}
select:focus, button:focus { outline: none; border-color: #3b82f6; box-shadow: 0 0 0 3px rgba(59,130,246,0.3); }
button { background-color: var(--button-bg); color: #fff; font-weight: 500; cursor: pointer; }
button:hover { background-color: var(--button-hover); }

/* ===== Table ===== */
.table-wrapper {
  overflow-x: auto; background: var(--card-bg);
  border-radius: 12px; box-shadow: 0 3px 10px var(--shadow); padding: 10px;
}
table { border-collapse: collapse; width: 100%; background: var(--card-bg); border-radius: 12px; }
th { background-color: #f3f6fb; text-align: left; padding: 14px 16px; font-weight: 600; color: #333; }
td { padding: 12px 16px; border-top: 1px solid var(--card-border); }
tr:hover td { background-color: var(--table-hover); transition: background 0.2s; }

/* ===== Responsive ===== */
@media (max-width: 768px) { body { margin: 20px; } .filter-form { flex-direction: column; } table, th, td { font-size: 0.9rem; } }

/* ===== Dark Mode Variables ===== */
body.dark {
  --bg-color: #121212;
  --text-color: #eaeaea;
  --card-bg: #1f1f1f;
  --card-border: #333;
  --input-bg: #2a2a2a;
  --table-hover: #2a2a2a;
  --shadow: rgba(0,0,0,0.6);
  --button-bg: #3b82f6;
  --button-hover: #2563eb;
}

/* ===== Auto Mode (follows system) ===== */
body.auto { }
@media (prefers-color-scheme: dark) {
  body.auto {
    --bg-color: #121212;
    --text-color: #eaeaea;
    --card-bg: #1f1f1f;
    --card-border: #333;
    --input-bg: #2a2a2a;
    --table-hover: #2a2a2a;
    --shadow: rgba(0,0,0,0.6);
    --button-bg: #3b82f6;
    --button-hover: #2563eb;
  }
}