:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #242836;
    --border: #2d3140;
    --text: #e4e6ed;
    --text2: #8b8fa3;
    --accent: #4A90D9;
    --accent2: #6C47B8;
    --danger: #ef4444;
    --success: #22c55e;
    --warn: #f59e0b;
    --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}
.sidebar-header { padding: 24px 20px; border-bottom: 1px solid var(--border); }
.sidebar-header h2 { font-size: 20px; }
.nav-links { list-style: none; padding: 12px 0; flex: 1; }
.nav-links a {
    display: block; padding: 10px 20px; color: var(--text2);
    text-decoration: none; font-size: 14px; transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface2); }
.nav-sub { padding-left: 16px; }
.nav-sub a { font-size: 13px; padding: 6px 20px; }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid var(--border); }
.sidebar-footer a { color: var(--text2); text-decoration: none; font-size: 14px; }

.content { margin-left: 260px; padding: 32px; flex: 1; max-width: 1200px; }
.content h1 { font-size: 28px; margin-bottom: 24px; }

.card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px; margin-bottom: 24px;
}
.card h2 { font-size: 18px; margin-bottom: 16px; color: var(--text); }

.children-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px; margin-bottom: 24px;
}
.child-card {
    display: flex; align-items: center; gap: 16px; padding: 16px;
    background: var(--surface2); border-radius: var(--radius);
    text-decoration: none; color: var(--text); transition: transform 0.15s;
}
.child-card:hover { transform: translateY(-2px); }
.child-avatar { font-size: 36px; }
.child-info { display: flex; flex-direction: column; gap: 2px; }
.child-info strong { font-size: 16px; }
.child-info .email { color: var(--text2); font-size: 13px; }
.child-info .meta { color: var(--text2); font-size: 12px; }

.events-list { display: flex; flex-direction: column; gap: 8px; }
.event-item {
    display: flex; align-items: center; gap: 12px; padding: 12px;
    background: var(--surface2); border-radius: 8px; font-size: 14px; flex-wrap: wrap;
}
.event-item.watched { border-left: 3px solid var(--warn); }
.event-type {
    background: var(--accent); color: #fff; padding: 2px 8px;
    border-radius: 4px; font-size: 12px; white-space: nowrap;
}
.event-app {
    background: var(--accent2); color: #fff; padding: 2px 8px;
    border-radius: 4px; font-size: 12px; white-space: nowrap;
}
.event-content { flex: 1; min-width: 200px; }
.event-meta, .event-time { color: var(--text2); font-size: 12px; }
.notif-preview { max-width: 120px; max-height: 80px; border-radius: 6px; object-fit: cover; }

.device-card {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px; background: var(--surface2); border-radius: var(--radius);
    margin-bottom: 12px; flex-wrap: wrap; gap: 12px;
}
.device-info { display: flex; flex-direction: column; gap: 4px; }
.device-info strong { font-size: 16px; }
.device-info span { color: var(--text2); font-size: 13px; }
.device-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn-sm {
    background: var(--surface); color: var(--text); border: 1px solid var(--border);
    padding: 8px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; transition: all 0.2s;
}
.btn-sm:hover { background: var(--accent); border-color: var(--accent); }

.quick-nav { display: flex; gap: 12px; margin-bottom: 24px; }
.btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 10px 20px;
    background: var(--accent); color: #fff; text-decoration: none;
    border-radius: var(--radius); font-size: 14px; transition: opacity 0.2s;
}
.btn:hover { opacity: 0.85; }

.media-filters { display: flex; gap: 8px; margin-bottom: 20px; }
.filter-btn {
    background: var(--surface2); color: var(--text2); border: 1px solid var(--border);
    padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 13px;
}
.filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.media-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px;
}
.media-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
}
.media-card img, .media-card video { width: 100%; height: 180px; object-fit: cover; cursor: pointer; }
.media-meta {
    padding: 10px; display: flex; flex-direction: column; gap: 2px;
    font-size: 12px; color: var(--text2);
}

.modal {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.9);
    z-index: 1000; align-items: center; justify-content: center; cursor: pointer;
}
.modal.active { display: flex; }
.modal img { max-width: 90vw; max-height: 90vh; object-fit: contain; border-radius: 8px; }

.add-form { border-top: 1px solid var(--border); padding-top: 16px; }
.add-form h3 { font-size: 15px; margin-bottom: 12px; color: var(--text2); }
.form-row { display: flex; gap: 12px; align-items: center; }
.form-row input {
    flex: 1; padding: 10px 14px; background: var(--bg); border: 1px solid var(--border);
    border-radius: 8px; color: var(--text); font-size: 14px;
}
.form-row button {
    padding: 10px 20px; background: var(--accent); color: #fff; border: none;
    border-radius: 8px; cursor: pointer; font-size: 14px;
}

.empty { color: var(--text2); text-align: center; padding: 24px; }
.error {
    background: var(--danger); color: #fff; padding: 10px 16px;
    border-radius: 8px; margin-bottom: 16px; font-size: 14px;
}

.login-body {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; background: var(--bg);
}
.login-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; padding: 40px; width: 100%; max-width: 400px; text-align: center;
}
.login-card h1 { font-size: 32px; margin-bottom: 8px; }
.login-card p { color: var(--text2); margin-bottom: 24px; }
.login-card form { display: flex; flex-direction: column; gap: 12px; }
.login-card input {
    padding: 14px; background: var(--bg); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text); font-size: 15px;
}
.login-card button {
    padding: 14px; background: var(--accent); color: #fff; border: none;
    border-radius: 10px; font-size: 16px; cursor: pointer; margin-top: 8px;
}

@media (max-width: 768px) {
    .sidebar { display: none; }
    .content { margin-left: 0; padding: 16px; }
    .form-row { flex-direction: column; }
    .device-card { flex-direction: column; }
}