:root {
    --bg: #f4f6f9;
    --card: #ffffff;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --text: #1f2937;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
    --radius: 12px;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

.app-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px 40px;
}

/* Header */
.top-header {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: #fff;
    padding: 16px 24px;
    border-radius: 0 0 var(--radius) var(--radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}
.logo-box { font-size: 20px; font-weight: 700; letter-spacing: -0.5px; }
.user-panel { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.user-name { font-size: 14px; opacity: 0.9; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 16px; border-radius: 8px; font-size: 14px; font-weight: 500;
    cursor: pointer; border: none; transition: all 0.2s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn-ghost { background: rgba(255,255,255,0.15); color: #fff; backdrop-filter: blur(4px); }
.btn-ghost:hover { background: rgba(255,255,255,0.25); }
.btn-danger-outline { background: transparent; border: 1px solid #ef4444; color: #ef4444; }
.btn-danger-outline:hover { background: #ef4444; color: #fff; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* Cards */
.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}
.section-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; color: var(--text); }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.stats-badge { background: #e0e7ff; color: #3730a3; padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }

/* Form */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-bottom: 14px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group select {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
    font-size: 14px; background: #f9fafb; transition: all 0.2s;
}
.form-group input:focus, .form-group select:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.15); background: #fff;
}
.collab-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
    display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px;
    background: #f3f4f6; border-radius: 20px; font-size: 13px; cursor: pointer; transition: 0.2s;
}
.chip:hover { background: #e5e7eb; }
.chip input { accent-color: var(--primary); }
.form-actions { display: flex; gap: 10px; margin-top: 10px; }
.hidden { display: none !important; }

/* Table */
.table-wrapper { overflow-x: auto; border-radius: 8px; border: 1px solid var(--border); }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { background: #f8fafc; padding: 12px 14px; text-align: left; font-weight: 600; color: var(--text-muted); border-bottom: 2px solid var(--border); }
.data-table td { padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f8fafc; }
.empty-state { text-align: center; color: var(--text-muted); padding: 40px 0; font-style: italic; }

/* Badges */
.badge { display: inline-block; padding: 3px 8px; border-radius: 6px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.badge-daily { background: #dbeafe; color: #1d4ed8; }
.badge-weekly { background: #dcfce7; color: #166534; }
.badge-monthly { background: #fef3c7; color: #92400e; }
.badge-weekends { background: #fce7f3; color: #9d174d; }
.badge-regular { background: #e5e7eb; color: #4b5563; }

.del-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 28px; height: 28px; border-radius: 6px; background: #fee2e2; color: #dc2626;
    text-decoration: none; font-size: 14px; transition: 0.2s;
}
.del-btn:hover { background: #fecaca; transform: scale(1.05); }

/* Toast */
.toast {
    position: fixed; bottom: 24px; right: 24px;
    background: #1f2937; color: #fff; padding: 12px 18px;
    border-radius: 8px; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    font-size: 14px; z-index: 1000; transform: translateY(100px); opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.toast:not(.hidden) { transform: translateY(0); opacity: 1; }
.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }

.fade-in { animation: fadeIn 0.4s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }

/* Print */
@media print {
    body { background: #fff; padding: 0; }
    .top-header, .quick-add-card, .no-print, .toast, .del-btn, .btn { display: none !important; }
    .card { box-shadow: none; border: 1px solid #ccc; padding: 10px; page-break-inside: avoid; }
    table { font-size: 10px; width: 100%; border-collapse: collapse; }
    th, td { border: 1px solid #333; padding: 4px 6px; }
}
@media (max-width: 640px) {
    .form-grid { grid-template-columns: 1fr; }
    .top-header { flex-direction: column; align-items: stretch; }
    .user-panel { justify-content: center; }
}