* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #f5f5f5; color: #333; }
nav { background: #1a73e8; color: white; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; }
nav h1 { font-size: 1.2rem; }
nav a { color: white; }
main { padding: 2rem; }

/* Login */
.login-container { text-align: center; margin-top: 4rem; }
.google-btn { display: inline-block; margin-top: 2rem; padding: 0.75rem 2rem; background: #4285f4; color: white; text-decoration: none; border-radius: 4px; font-size: 1.1rem; }
.google-btn:hover { background: #3367d6; }

/* Dashboard */
.dashboard-header { margin-bottom: 1.5rem; }
.dashboard-header h2 { margin-bottom: 1rem; }
.controls { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.period-form { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.period-form input[type="date"] { padding: 0.4rem; border: 1px solid #ccc; border-radius: 4px; }
.period-form button, .btn { padding: 0.5rem 1rem; border: none; border-radius: 4px; cursor: pointer; text-decoration: none; font-size: 0.9rem; }
.period-form button[type="submit"] { background: #1a73e8; color: white; }
.presets { display: flex; gap: 0.25rem; }
.presets button { background: #e8eaed; color: #333; font-size: 0.8rem; padding: 0.3rem 0.6rem; }
.presets button:hover { background: #d2d5db; }
.export-btns { display: flex; gap: 0.5rem; }
.btn { background: #34a853; color: white; display: inline-block; }
.btn:hover { background: #2d8f47; }

/* Error */
.error-box { background: #fce8e6; border: 1px solid #d93025; color: #d93025; padding: 1rem 1.5rem; border-radius: 4px; margin-bottom: 1.5rem; }

/* Table */
.table-container { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: white; font-size: 0.85rem; }
th, td { border: 1px solid #ddd; padding: 0.5rem 0.6rem; text-align: center; white-space: nowrap; }
th { background: #f0f0f0; position: sticky; top: 0; z-index: 1; }
thead tr:first-child th[colspan] { background: #1a73e8; color: white; }
td:first-child { text-align: left; font-weight: 500; }
tbody tr:hover { background: #f8f9fa; }