@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
    --primary: #4F46E5;
    --primary-light: #EEF2FF;
    --primary-dark: #3730A3;
    --secondary: #10B981;
    --surface: rgba(255, 255, 255, 0.85);
    --surface-solid: #ffffff;
    --bg: #F3F4F6;
    --text-main: #111827;
    --text-muted: #6B7280;
    --border: rgba(229, 231, 235, 0.5);
    --danger: #EF4444;
    --warning: #F59E0B;
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --radius-lg: 1.5rem;
    --radius-md: 1rem;
}

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

body { 
    font-family: 'Inter', sans-serif; 
    background: linear-gradient(135deg, #f0fdf4 0%, #e0e7ff 100%);
    color: var(--text-main); 
    height: 100vh; 
    display: flex; 
    overflow: hidden; 
}

/* Sidebar Glassmorphism */
.sidebar { 
    width: 280px; 
    background: var(--surface); 
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid var(--border); 
    display: flex; 
    flex-direction: column; 
    padding: 2rem 1rem;
    z-index: 10;
}

.sidebar h2 { 
    color: var(--primary); 
    font-weight: 900; 
    letter-spacing: -1px; 
    margin-bottom: 2.5rem; 
    padding-left: 1rem; 
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar h2::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary);
}

.nav-link { 
    display: flex; 
    align-items: center; 
    gap: 12px; 
    padding: 12px 1rem; 
    color: var(--text-muted); 
    text-decoration: none; 
    border-radius: var(--radius-md); 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    margin-bottom: 8px; 
    font-weight: 600; 
    position: relative;
    overflow: hidden;
}

.nav-link:hover { 
    background: var(--primary-light); 
    color: var(--primary); 
    transform: translateX(5px);
}

.nav-link.active { 
    background: var(--primary); 
    color: white; 
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.nav-icon { font-size: 1.25rem; transition: transform 0.3s; }
.nav-link:hover .nav-icon { transform: scale(1.1); }

/* Main Content Area */
.main-content { 
    flex: 1; 
    display: flex; 
    flex-direction: column; 
    overflow: hidden; 
    position: relative; 
}

.header { 
    height: 70px; 
    background: transparent; 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    padding: 0 2rem; 
    flex-shrink: 0; 
}

.content-body { 
    flex: 1; 
    overflow-y: auto; 
    padding: 0 2rem 2rem 2rem; 
}

/* Glass Card */
.card { 
    background: var(--surface); 
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-lg); 
    padding: 1.5rem; 
    box-shadow: var(--shadow-glass); 
    border: 1px solid rgba(255,255,255,0.4); 
    transition: transform 0.3s, box-shadow 0.3s; 
}
.card:hover { 
    box-shadow: 0 15px 35px rgba(31, 38, 135, 0.1); 
}

/* Typography & Utils */
h2.view-title {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--text-main);
    letter-spacing: -0.5px;
    margin-bottom: 0.5rem;
}
.view-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
}
/* Hiển thị card/bảng */
.admin-cards-container, 
.summary-cards-container { 
    display: none; 
}
#summaryView .summary-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}
#summaryView #summaryTableCard {
    display: none;
}
@media (min-width: 769px) {
    .table-container { display: block !important; }
}

/* Buttons */
.btn { 
    cursor: pointer; 
    border: none; 
    font-weight: 700; 
    font-family: inherit; 
    transition: all 0.3s; 
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    gap: 8px;
}
.btn-primary { 
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); 
    color: white; 
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}
.btn-primary:hover { 
    transform: translateY(-2px); 
    box-shadow: 0 8px 16px rgba(79, 70, 229, 0.4);
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { 
    background: #D1D5DB; 
    box-shadow: none;
    cursor: not-allowed; 
    transform: none; 
}

.btn-secondary { 
    background: var(--surface-solid); 
    color: var(--text-main); 
    border: 1px solid var(--border); 
}
.btn-secondary:hover { 
    background: #F9FAFB; 
    border-color: #D1D5DB;
}

.btn-danger {
    background: var(--danger);
    color: white;
}
.btn-danger:hover { background: #DC2626; }

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    gap: 4px;
    border-radius: 8px;
}

/* Forms */
.form-control { 
    width: 100%; 
    padding: 0.85rem 1rem; 
    border: 1px solid #D1D5DB; 
    border-radius: var(--radius-md); 
    font-family: inherit; 
    font-size: 0.95rem; 
    transition: all 0.2s;
    background: rgba(255,255,255,0.9);
}
.form-control:focus { 
    outline: none; 
    border-color: var(--primary); 
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15); 
}
.form-group label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-main);
    margin-bottom: 0.5rem;
    display: block;
}

/* Tables Custom */
.table-container { 
    width: 100%; 
    overflow-x: auto; 
    border-radius: var(--radius-md);
}
table { 
    width: 100%; 
    border-collapse: collapse; 
    min-width: 600px; 
    background: transparent;
}
th { 
    background: rgba(243, 244, 246, 0.7); 
    text-align: left; 
    padding: 1rem 1.25rem; 
    font-size: 0.8rem; 
    font-weight: 700; 
    color: var(--text-muted); 
    text-transform: uppercase; 
    letter-spacing: 0.05em; 
    border-bottom: 1px solid var(--border); 
}
td { 
    padding: 1rem 1.25rem; 
    border-bottom: 1px solid rgba(229, 231, 235, 0.3); 
    font-size: 0.95rem; 
    vertical-align: middle; 
    color: var(--text-main);
    font-weight: 500;
}
tr:hover td { background: rgba(249, 250, 251, 0.5); }

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.badge-success { background: #D1FAE5; color: #065F46; }
.badge-danger { background: #FEE2E2; color: #991B1B; }
.badge-warning { background: #FEF3C7; color: #92400E; }
.badge-info { background: var(--primary-light); color: var(--primary-dark); }

/* Toast */
#toast { 
    position: fixed; 
    bottom: 2rem; 
    left: 50%; 
    transform: translateX(-50%) translateY(100px); 
    background: var(--text-main); 
    color: white; 
    padding: 1rem 2rem; 
    border-radius: 99px; 
    font-weight: 600; 
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.3); 
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); 
    z-index: 10001; 
    display: flex;
    align-items: center;
    gap: 10px;
}
#toast.show { transform: translateX(-50%) translateY(0); }

/* Modals */
.modal-backdrop { 
    position: fixed; 
    inset: 0; 
    background: rgba(17, 24, 39, 0.4); 
    backdrop-filter: blur(4px); 
    z-index: 1000; 
    display: none; 
    opacity: 0;
    transition: opacity 0.3s;
}
.modal-backdrop.show { opacity: 1; }
.center-modal { 
    position: fixed; 
    top: 50%; 
    left: 50%; 
    transform: translate(-50%, -40%); 
    background: var(--surface-solid); 
    padding: 2rem; 
    border-radius: var(--radius-lg); 
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); 
    z-index: 1001; 
    width: 95%; 
    max-width: 500px; 
    display: none; 
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.center-modal.show { 
    transform: translate(-50%, -50%);
    opacity: 1;
}

/* Specific Grid constraints */
#attendanceSlots { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.attendance-slot { 
    background: rgba(255,255,255,0.6); 
    border: 1px solid var(--border); 
    border-radius: var(--radius-md); 
    padding: 1rem; 
    display: flex; 
    flex-direction: column; 
    gap: 8px; 
    transition: all 0.2s; 
    position: relative; 
}
.attendance-slot.done { 
    background: var(--primary-light); 
    border-color: rgba(79, 70, 229, 0.3); 
}
.slot-header { font-size: 0.75rem; font-weight: 800; color: var(--text-muted); text-transform: uppercase; }
.attendance-slot.done .slot-header { color: var(--primary); }
.slot-status { font-weight: 800; font-size: 1.1rem; color: var(--text-main); }
.slot-red { background: #FEF2F2 !important; border-color: #F87171 !important; }
.slot-red .slot-status { color: #DC2626 !important; }

/* Camera UI */
.camera-container {
    width: 100%; 
    aspect-ratio: 4/3; 
    background: #000; 
    border-radius: var(--radius-md); 
    overflow: hidden; 
    position: relative; 
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

/* Dashboard Filter Bar */
.filter-bar {
    display: flex;
    gap: 1rem;
    background: var(--surface);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    align-items: flex-end;
}

.filter-bar .form-group { margin-bottom: 0; flex: 1; }

/* Calendar component */
.calendar-wrapper { width: 100%; }
.calendar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.calendar-grid-month {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}
.cal-cell {
    background: rgba(255,255,255,0.7);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    min-height: 100px;
}
.cal-cell-header {
    font-size: 0.8rem; font-weight: 700; color: var(--text-muted); text-align: right;
}
.cal-cell.today { border-color: var(--primary); background: var(--primary-light); }
.shift-item {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-size: 0.75rem;
    padding: 4px 6px;
    border-radius: 4px;
    margin-top: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.shift-item-mini {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 6px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.7rem;
    font-weight: 800;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

#userAvatarContainer:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px var(--primary);
}

@keyframes avatarPulse {
    0% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(79, 70, 229, 0); }
    100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
}

/* =========================================================
   MOBILE RESPONSIVENESS (<= 768px)
   ========================================================= */
@media (max-width: 768px) {
    /* SIDEBAR AS DRAWER */
    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: -280px; /* Hidden entirely off-screen */
        width: 280px;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 10000;
        padding: 1.5rem 1rem;
        box-shadow: var(--shadow-glass);
    }
    
    .sidebar.show {
        left: 0;
    }

    /* HEADER */
    .header {
        padding: 0 1rem; 
        height: 60px;
    }

    .mobile-menu-btn {
        display: block !important;
    }

    /* OVERLAY */
    .modal-backdrop#sidebarBackdrop {
        z-index: 9999;
    }

    /* ALIGNMENT AND GRID STACKING */
    .content-body {
        padding: 0 1rem 1rem 1rem;
    }

    /* Stack grid templates */
    .attendance-layout,
    .grid {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* FILTERS */
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    .filter-bar > div {
        flex-direction: column;
        align-items: stretch !important;
    }
    .filter-bar .btn {
        width: 100%;
        margin-top: 0.5rem;
    }

    /* CAMERA & WIDGETS */
    .camera-container {
        max-width: 100% !important;
    }

    #attendanceSlots {
        grid-template-columns: 1fr !important;
    }

    /* CALENDAR */
    .calendar-grid-month {
        grid-template-columns: repeat(7, 1fr) !important;
        gap: 4px;
        /* Increase horizontal scroll area if it overflows */
    }
    .cal-cell {
        min-height: 80px;
        padding: 0.25rem;
    }
    .cal-cell-header {
        font-size: 0.7rem;
        text-align: center;
    }
    
    /* TABLES SCROLL */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: var(--radius-md);
        box-shadow: inset 0 0 5px rgba(0,0,0,0.02);
    }
    
    th, td {
        white-space: nowrap;
        padding: 0.75rem 1rem;
    }

    /* SUBTITLE */
    .view-subtitle,
    p.view-subtitle {
        display: none !important;
    }

    /* FILTER GRID 2x2 */
    .filter-bar.grid-2x2 {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 0.75rem !important;
        padding: 0.75rem !important;
    }
    .filter-bar.grid-2x2 .form-group {
        width: 100% !important;
    }
    .filter-bar.grid-2x2 .btn-group-mobile {
        grid-column: span 2;
        display: flex;
        gap: 8px;
    }
    .filter-bar.grid-2x2 .btn-group-mobile button {
        flex: 1;
        margin-top: 5px;
    }

    /* ATTENDANCE CARDS */
    .admin-cards-container {
        display: none;
        flex-direction: column;
        gap: 1rem;
        padding-bottom: 2rem;
    }
    
    .attendance-card {
        background: var(--surface);
        border-radius: var(--radius-md);
        padding: 1.25rem;
        box-shadow: var(--shadow-soft);
        border-left: 5px solid var(--primary);
        display: flex;
        flex-direction: column;
        gap: 10px;
        position: relative;
        overflow: hidden;
    }
    .attendance-card.status-approved { border-left-color: var(--secondary); }
    .attendance-card.status-pending { border-left-color: var(--warning); }
    .attendance-card.status-rejected { border-left-color: var(--danger); }

    .card-row { display: flex; justify-content: space-between; align-items: flex-start; }
    .card-staff { font-weight: 800; font-size: 1.1rem; color: var(--text-main); }
    .card-branch { font-size: 0.8rem; color: var(--text-muted); font-weight: 600; }
    .card-date { font-weight: 700; color: var(--primary); font-size: 0.9rem; }
    
    .card-times {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        margin-top: 5px;
    }
    .time-box {
        background: rgba(255,255,255,0.5);
        padding: 8px;
        border-radius: 8px;
        text-align: center;
    }
    .time-label { font-size: 0.7rem; color: var(--text-muted); font-weight: 700; text-transform: uppercase; }
    .time-value { font-size: 1rem; font-weight: 800; color: var(--text-main); }
    
    /* VERTICAL CALENDAR */
    .calendar-grid-month.vertical {
        display: flex !important;
        flex-direction: column !important;
        gap: 10px !important;
    }
    .calendar-grid-month.vertical .cal-cell {
        min-height: auto !important;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.75rem 1rem;
    }
    .calendar-grid-month.vertical .cal-cell-header {
        font-size: 1rem;
        text-align: left;
        color: var(--text-main);
        min-width: 100px;
    }
    .calendar-grid-month.vertical .shifts-container {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: flex-end;
    }

    /* TOGGLE VISIBILITY */
    #adminView .table-container,
    #summaryView .table-container { 
        display: none !important; 
    }
    .admin-cards-container,
    .summary-cards-container { 
        display: flex !important; 
        flex-direction: column;
        gap: 1rem;
        padding-bottom: 2rem;
    }

    /* SUMMARY CARDS DESIGN */
    .summary-card {
        background: var(--surface);
        border-radius: var(--radius-md);
        padding: 1.25rem;
        box-shadow: var(--shadow-soft);
        border-top: 4px solid var(--primary);
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .summary-card-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-bottom: 1px solid var(--border);
        padding-bottom: 8px;
    }
    .summary-card-name { font-weight: 800; font-size: 1.1rem; }
    .summary-card-branch { font-size: 0.8rem; color: var(--text-muted); font-weight: 600; }
    .summary-card-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .summary-stat {
        background: var(--bg-secondary);
        padding: 8px;
        border-radius: 8px;
        text-align: center;
    }
    .summary-stat-label { font-size: 0.65rem; color: var(--text-muted); font-weight: 700; text-transform: uppercase; }
    .summary-stat-value { font-size: 0.95rem; font-weight: 800; color: var(--text-main); }
    .summary-salary {
        margin-top: 5px;
        padding: 10px;
        background: var(--primary-light);
        color: var(--primary-dark);
        border-radius: 8px;
        text-align: center;
        font-weight: 900;
        font-size: 1.1rem;
    }

    /* COMPACT FILTERS row for shifts & others */
    .shifts-filter-row,
    .nav-row {
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        gap: 8px !important;
        padding: 0.75rem !important;
        align-items: center !important;
        justify-content: center !important;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        /* Ẩn scrollbar */
        -ms-overflow-style: none;
        scrollbar-width: none;
    }
    .shifts-filter-row::-webkit-scrollbar,
    .nav-row::-webkit-scrollbar { display: none; }

    .filter-bar.nav-row {
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        align-items: center !important;
    }

    .shifts-filter-row .btn,
    .nav-row .btn,
    .filter-bar.nav-row .btn {
        flex-shrink: 0 !important;
        padding: 0.5rem 0.8rem !important;
        font-size: 0.8rem !important;
        width: auto !important;
        margin: 0 !important;
        white-space: nowrap !important;
    }
    .shifts-filter-row span,
    .nav-row span {
        flex-shrink: 0;
        font-size: 0.9rem !important;
        font-weight: 800;
        color: var(--text-main);
        white-space: nowrap;
    }
}