@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #5850ec;
    --primary-hover: #453ec5;
    --primary-light: #ebf5ff;
    --bg-app: #f4f6f9;
    --bg-card: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --info: #3b82f6;
    --info-bg: #dbeafe;
    --neutral: #6b7280;
    --neutral-bg: #f3f4f6;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    
    --font-sans: 'Outfit', sans-serif;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Basics */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--primary-hover);
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* Layout Framework */
.app-container {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
}

/* Desktop Sidebar */
.sidebar {
    width: 260px;
    background-color: #0f172a;
    color: #ffffff;
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
}

.sidebar-logo {
    font-size: 1.3rem;
    font-weight: 700;
    padding: 0.5rem 1rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid #1e293b;
}

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: #94a3b8;
    border-radius: var(--radius-sm);
    font-weight: 500;
}
.sidebar-link:hover, .sidebar-link.active {
    background-color: #1e293b;
    color: #ffffff;
}
.sidebar-link.active {
    border-left: 4px solid var(--primary);
}

/* Main Content Wrapper */
.main-wrapper {
    margin-left: 260px;
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: 4rem; /* Safe space on mobile */
}

/* Header Navbar */
.top-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-card);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
    margin-left: 260px;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Card design */
.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}
.card:hover {
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* KPI Badges / Dash Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    color: inherit;
}
.stat-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--neutral);
}
.stat-card.pending::after { background-color: var(--warning); }
.stat-card.partial::after { background-color: var(--info); }
.stat-card.completed::after { background-color: var(--success); }
.stat-card.overdue::after { background-color: var(--danger); }

.stat-icon {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}
.stat-card.pending .stat-icon { background-color: var(--warning-bg); color: var(--warning); }
.stat-card.partial .stat-icon { background-color: var(--info-bg); color: var(--info); }
.stat-card.completed .stat-icon { background-color: var(--success-bg); color: var(--success); }
.stat-card.overdue .stat-icon { background-color: var(--danger-bg); color: var(--danger); }

.stat-info {
    display: flex;
    flex-direction: column;
}
.stat-val {
    font-size: 1.6rem;
    font-weight: 700;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Button UI - Enhanced Sizing & Touch Targets */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.35rem;
    min-height: 42px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    text-decoration: none;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    white-space: nowrap;
    user-select: none;
}
.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.btn:active {
    transform: translateY(0);
}
.btn:disabled, .btn[disabled] {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
    transform: none;
    box-shadow: none;
}

.btn-primary { 
    background-color: var(--primary); 
    color: #ffffff; 
    border-color: var(--primary);
}
.btn-primary:hover { 
    background-color: var(--primary-hover); 
    border-color: var(--primary-hover);
    color: #ffffff;
}

.btn-secondary { 
    background-color: var(--bg-card); 
    color: var(--text-main); 
    border-color: var(--border); 
}
.btn-secondary:hover { 
    background-color: #f1f5f9; 
    border-color: #cbd5e1;
    color: var(--text-main);
}

.btn-success { 
    background-color: var(--success); 
    color: #ffffff; 
    border-color: var(--success);
}
.btn-success:hover { 
    background-color: #059669; 
    border-color: #059669;
    color: #ffffff;
}

.btn-danger { 
    background-color: var(--danger); 
    color: #ffffff; 
    border-color: var(--danger);
}
.btn-danger:hover { 
    background-color: #dc2626; 
    border-color: #dc2626;
    color: #ffffff;
}

.btn-warning {
    background-color: var(--warning);
    color: #ffffff;
    border-color: var(--warning);
}
.btn-warning:hover {
    background-color: #d97706;
    border-color: #d97706;
    color: #ffffff;
}

.btn-sm { 
    padding: 0.45rem 0.9rem; 
    min-height: 36px;
    font-size: 0.875rem; 
    font-weight: 600;
    border-radius: var(--radius-sm); 
}
.btn-lg {
    padding: 0.9rem 1.75rem;
    min-height: 48px;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: var(--radius-md);
}
.btn-full { 
    width: 100%; 
    justify-content: center; 
}

/* Searchable Autocomplete Styles */
.autocomplete-container {
    position: relative;
    width: 100%;
}
.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    max-height: 240px;
    overflow-y: auto;
    z-index: 1000;
    margin-top: 4px;
}
.autocomplete-item {
    padding: 0.6rem 0.85rem;
    cursor: pointer;
    font-size: 0.9rem;
    border-bottom: 1px solid #f1f5f9;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.15s ease;
}
.autocomplete-item:last-child {
    border-bottom: none;
}
.autocomplete-item:hover, .autocomplete-item.selected {
    background-color: var(--primary-light);
    color: var(--primary);
}
.autocomplete-item-title {
    font-weight: 600;
}
.autocomplete-item-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-draft { background-color: var(--neutral-bg); color: var(--neutral); }
.badge-pending { background-color: var(--warning-bg); color: var(--warning); }
.badge-partial { background-color: var(--info-bg); color: var(--info); }
.badge-completed { background-color: var(--success-bg); color: var(--success); }
.badge-overdue { background-color: var(--danger-bg); color: var(--danger); }
.badge-on_hold { background-color: #e0f2fe; color: #0369a1; }
.badge-cancelled { background-color: #f3f4f6; color: #374151; }

/* Form UI */
.form-group {
    margin-bottom: 1.25rem;
}
.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}
.form-control {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background-color: #ffffff;
    transition: var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(88, 80, 236, 0.15);
}

.input-group {
    display: flex;
    gap: 0.5rem;
}
.input-group .form-control {
    flex-grow: 1;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background-color: var(--bg-card);
}
.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.table th, .table td {
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
}
.table th {
    background-color: #f8fafc;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.table tr:last-child td {
    border-bottom: none;
}
.table tr:hover td {
    background-color: #f8fafc;
}

/* Mobile Bottom Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-top: 1px solid var(--border);
    z-index: 200;
    justify-content: space-around;
    padding: 0.5rem 0;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}
.mobile-nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-decoration: none;
    gap: 2px;
}
.mobile-nav-link.active {
    color: var(--primary);
}
.mobile-nav-link svg {
    width: 22px;
    height: 22px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    position: relative;
    overflow: hidden;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
}
.modal-body {
    padding: 1.5rem;
}
.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    background-color: #f9fafb;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* PO Form Items Table Builder */
.po-items-table th {
    font-size: 0.8rem;
    padding: 0.5rem;
}
.po-items-table td {
    padding: 0.5rem;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .sidebar, .top-navbar {
        display: none;
    }
    
    .main-wrapper {
        margin-left: 0;
        padding: 1rem;
        padding-bottom: 5.5rem; /* Space for bottom nav */
    }
    
    .mobile-nav {
        display: flex;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 0.85rem;
        gap: 0.5rem;
    }
    
    .stat-icon {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .stat-val {
        font-size: 1.25rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }

    /* Convert tables to cards on mobile */
    .mobile-table-card {
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 1rem;
        margin-bottom: 0.75rem;
        background-color: var(--bg-card);
    }
    .mobile-table-card-row {
        display: flex;
        justify-content: space-between;
        margin-bottom: 0.5rem;
        font-size: 0.9rem;
    }
    .mobile-table-card-row:last-child {
        margin-bottom: 0;
    }
    .mobile-table-card-row .label {
        color: var(--text-muted);
        font-weight: 500;
    }
    .mobile-table-card-row .val {
        font-weight: 600;
    }
    
    .table-desktop-only {
        display: none;
    }
    .mobile-cards-container {
        display: block !important;
    }

    /* PO Form Layout */
    .po-form-layout {
        display: grid;
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* PO Items Table Mobile stacked view */
    .po-items-table {
        display: block;
        width: 100%;
        border: none;
    }
    .po-items-table thead {
        display: none !important;
    }
    .po-items-table tbody,
    .po-items-table tr,
    .po-items-table td {
        display: block;
        width: 100%;
    }
    .po-items-table tr {
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 1rem;
        margin-bottom: 1.25rem;
        background-color: #f9fafb;
    }
    .po-items-table td {
        padding: 0.5rem 0 !important;
        border-bottom: none;
        display: flex !important;
        align-items: center;
        justify-content: space-between;
        gap: 0.5rem;
    }
    .po-items-table td::before {
        content: attr(data-label);
        font-weight: 600;
        font-size: 0.85rem;
        color: var(--text-muted);
        min-width: 100px;
        text-align: left;
    }
    .po-items-table td > * {
        flex-grow: 1;
        max-width: 65% !important;
    }
    .po-items-table td:last-child {
        justify-content: flex-end;
    }
    .po-items-table td:last-child::before {
        display: none; /* Hide 'Remove' label text for delete button */
    }
    .po-items-table td:last-child > * {
        max-width: 100% !important;
    }
}

/* Toast Messages */
.alert {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    border: 1px solid transparent;
}
.alert-success {
    background-color: var(--success-bg);
    border-color: #a7f3d0;
    color: #047857;
}
.alert-danger {
    background-color: var(--danger-bg);
    border-color: #fecaca;
    color: #b91c1c;
}