/* ============================================
   INVENTORY PRO - CUSTOM STYLES
   ============================================ */

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

html, body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: #f9fafb;
    color: #1f2937;
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f3f4f6;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 1rem;
    border-radius: 0.5rem;
    color: #374151;
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.nav-link i {
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.nav-link:hover {
    background-color: #f0fce7;
    color: #4CAF50;
}

.nav-link.active {
    background-color: #4CAF50;
    color: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.nav-link.active:hover {
    background-color: #45a049;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1.25rem;
    border: 1px solid #f3f4f6;
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.stat-card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1.25rem;
    border: 1px solid #f3f4f6;
    border-top: 3px solid #4CAF50;
    transition: box-shadow 0.2s ease;
}

.stat-card:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.stat-card-primary {
    border-top-color: #4CAF50;
}

.stat-card-secondary {
    border-top-color: #2196F3;
}

.stat-card-warning {
    border-top-color: #ff9800;
}

.stat-card-danger {
    border-top-color: #f44336;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: #4CAF50;
    color: white;
    font-weight: 600;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background-color: #45a049;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-primary:focus {
    outline: none;
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: #f3f4f6;
    color: #374151;
    font-weight: 600;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background-color: #e5e7eb;
}

.btn-secondary:focus {
    outline: none;
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: #f44336;
    color: white;
    font-weight: 600;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-danger:hover {
    background-color: #da190b;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-danger:focus {
    outline: none;
}

.btn-success {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: #4CAF50;
    color: white;
    font-weight: 600;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-success:hover {
    background-color: #45a049;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: #2196F3;
    color: white;
    font-weight: 600;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-info:hover {
    background-color: #0b7dda;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================
   FORMS
   ============================================ */

.input {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s ease;
    background-color: white;
    font-family: inherit;
}

.input:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
}

select.input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

textarea.input {
    resize: none;
    min-height: 100px;
    font-family: inherit;
}

/* ============================================
   QUICK ACTIONS
   ============================================ */

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    color: #374151;
}

.quick-action-btn:hover {
    border-color: #4CAF50;
    background-color: #f0fce7;
    color: #4CAF50;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.quick-action-btn i {
    color: #4CAF50;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    transition: transform 0.2s ease;
}

.quick-action-btn:hover i {
    transform: scale(1.1);
}

.quick-action-btn span {
    font-size: 0.875rem;
    font-weight: 500;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background-color: #d1f2e3;
    color: #065f46;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background-color: #dbeafe;
    color: #0c4a6e;
}

.badge-primary {
    background-color: #d1f2e3;
    color: #065f46;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

#toast {
    animation: slideIn 0.3s ease-out;
}

#toast.hidden {
    animation: slideOut 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* ============================================
   EMPTY STATE
   ============================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
}

.empty-state i {
    font-size: 3rem;
    color: #d1d5db;
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #4b5563;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: #6b7280;
    margin-bottom: 1.5rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
}

.animate-fade-out {
    animation: fadeOut 0.2s ease-out;
}

.animate-scale-in {
    animation: scaleIn 0.3s ease-out;
}

/* ============================================
   TABLES
   ============================================ */

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background-color: #f9fafb;
}

th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid #e5e7eb;
}

td {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: #374151;
    border-top: 1px solid #f3f4f6;
}

tbody tr {
    transition: background-color 0.15s ease;
}

tbody tr:hover {
    background-color: #f9fafb;
}

/* ============================================
   MODALS
   ============================================ */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.15);
    max-width: 42rem;
    width: 100%;
    margin: 1rem;
    overflow: hidden;
    animation: scaleIn 0.2s ease;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    background-color: #f9fafb;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
}

.modal-body {
    padding: 1.5rem;
    max-height: 24rem;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid #e5e7eb;
    background-color: #f9fafb;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ============================================
   PRODUCT CARDS
   ============================================ */

.product-card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: box-shadow 0.2s ease;
    cursor: pointer;
}

.product-card:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.product-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover img {
    transform: scale(1.05);
}

/* ============================================
   UTILITIES
   ============================================ */

.line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

::selection {
    background-color: #4CAF50;
    color: white;
}

::-moz-selection {
    background-color: #4CAF50;
    color: white;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .card {
        padding: 1rem;
    }
    
    .btn-primary,
    .btn-secondary,
    .btn-danger {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .nav-link {
        padding: 0.5rem 0.75rem;
    }
    
    .modal-content {
        margin: 0 1rem;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .no-print,
    #sidebar,
    header,
    .btn-primary,
    .btn-secondary,
    .btn-danger {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #e5e7eb;
    }
}