:root { --bg-color: #f0f2f5; --card-bg: #ffffff; --primary-color: #4a69bd; --text-color: #333; --border-color: #ddd; --error-color: #e74c3c; --success-color: #2ecc71; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--bg-color); color: var(--text-color); }
.login-container { display: flex; justify-content: center; align-items: center; height: 100vh; }
.login-form { background: var(--card-bg); padding: 2.5rem; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); text-align: center; width: 100%; max-width: 350px; }
.login-form h2 { margin-top: 0; }
.login-form input { width: 100%; padding: 0.8rem; margin: 1rem 0; border: 1px solid var(--border-color); border-radius: 4px; box-sizing: border-box; font-size: 1rem; text-align: center; }
.login-form button { width: 100%; padding: 0.8rem; border: none; border-radius: 4px; background-color: var(--primary-color); color: white; font-size: 1rem; cursor: pointer; transition: background-color 0.2s; }
.login-form button:hover { background-color: #3b5998; }
.error-message { color: var(--error-color); margin-top: 1rem; }
.admin-container { max-width: 1200px; margin: 0 auto; padding: 2rem; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border-color); flex-wrap: wrap; }
.admin-header h1 { margin-right: auto; }
.admin-nav { display: flex; align-items: center; gap: 10px; }
.admin-nav a { text-decoration: none; color: var(--text-color); padding: 0.5rem 1rem; border-radius: 4px; transition: background-color 0.2s; }
.admin-nav a:hover { background-color: #e9ecef; }
.admin-nav a.active { background-color: var(--primary-color); color: white; }
.logout-btn { background: var(--error-color); color: white !important; }
.logout-btn:hover { background-color: #c0392b !important; }
.card { background: var(--card-bg); border-radius: 8px; padding: 2rem; box-shadow: 0 4px 12px rgba(0,0,0,0.08); margin-bottom: 2rem; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: bold; }
.form-group input, .form-group select { width: 100%; padding: 0.8rem; border: 1px solid var(--border-color); border-radius: 4px; box-sizing: border-box; }
.submit-btn { padding: 0.8rem 1.5rem; border: none; border-radius: 4px; background-color: var(--primary-color); color: white; font-size: 1rem; cursor: pointer; }
#upload-status.success { color: var(--success-color); } #upload-status.error { color: var(--error-color); }
#content-list .item { display: flex; align-items: center; padding: 1rem; border-bottom: 1px solid var(--border-color); }
#content-list .item img { width: 60px; height: 60px; object-fit: cover; border-radius: 4px; margin-right: 1rem; }
#content-list .item-details { flex-grow: 1; }
#content-list .item-details p { margin: 0; font-weight: bold; word-break: break-word; }
#content-list .delete-btn { background: none; border: none; color: var(--error-color); cursor: pointer; font-size: 1.2rem; }
.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.content-management-card.full-width { grid-column: 1 / -1; }
#folder-form { display: flex; gap: 10px; }
#folder-form input { flex-grow: 1; }
/* Stats Page Styles */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin-bottom: 2rem; }
.chart-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 1.5rem; }
.stat-card { text-align: center; }
.stat-title { font-size: 1.1rem; color: #6c757d; margin: 0 0 10px 0; }
.stat-number { font-size: 2.5rem; font-weight: bold; color: var(--primary-color); margin: 0; }
.chart-card { padding: 1.5rem; }
.chart-card h2 { margin-top: 0; margin-bottom: 1rem; text-align: center; }
.chart-container { position: relative; height: 350px; width: 100%; }