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

:root {
    --primary-color: #2271b1;
    --primary-dark: #135e96;
    --primary-light: #72aee6;
    --success-color: #00a32a;
    --error-color: #d63638;
    --warning-color: #dba617;
    --info-color: #2271b1;
    --text-color: #3c434a;
    --text-light: #646970;
    --bg-color: #f0f0f1;
    --bg-white: #ffffff;
    --border-color: #c3c4c7;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 14px;
}

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

/* Header Styles */
.app-header {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: var(--transition);
}

.main-nav {
    display: flex;
    gap: 10px;
    align-items: center;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Notifications */
.notifications-container {
    position: relative;
    margin-right: 15px;
}

.notification-bell {
    position: relative;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: white;
    font-size: 20px;
}

.notification-bell:hover {
    background: rgba(255, 255, 255, 0.3);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--error-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: bold;
    border: 2px solid var(--primary-color);
}

.notifications-dropdown {
    position: absolute;
    top: 50px;
    right: 0;
    width: 350px;
    max-height: 500px;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    overflow: hidden;
}

.notifications-header {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-color);
}

.notifications-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.notifications-list {
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.notification-item:hover {
    background: var(--bg-color);
}

.notification-item.unread {
    background: #f0f7ff;
    border-left: 3px solid var(--primary-color);
}

.notification-item.read {
    opacity: 0.7;
}

.notification-title {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-color);
}

.notification-message {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 5px;
}

.notification-time {
    font-size: 11px;
    color: var(--text-light);
}

.notification-loading,
.notification-empty {
    padding: 20px;
    text-align: center;
    color: var(--text-light);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-name {
    color: white;
    font-weight: 500;
}

.btn {
    display: inline-block;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-logout {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Main Content */
.app-main {
    flex: 1;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--bg-white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

/* Tables */
.table-container {
    overflow-x: auto;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: var(--bg-color);
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    color: var(--text-color);
    white-space: nowrap;
}

tbody tr:hover {
    background: #f9f9f9;
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-color);
}

.required-mark {
    color: var(--error-color);
    margin-left: 3px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(34, 113, 177, 0.1);
}

.form-control:disabled {
    background: #f5f5f5;
    cursor: not-allowed;
}

.form-control.is-invalid {
    border-color: var(--error-color);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23d63638'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='m5.8 3.6 .4.4.4-.4m0 4.8-.4-.4-.4.4'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-valid {
    border-color: var(--success-color);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2300a32a' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 5px;
    font-size: 13px;
    color: var(--error-color);
}

.valid-feedback {
    display: block;
    width: 100%;
    margin-top: 5px;
    font-size: 13px;
    color: var(--success-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.page-header {
    margin-bottom: 20px;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.form-help {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    color: var(--text-light);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem;
    appearance: none;
}

/* File Upload */
.file-upload-group {
    margin-bottom: 20px;
}

.file-upload-wrapper {
    position: relative;
}

.file-upload-area {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-color);
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(34, 113, 177, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(34, 113, 177, 0.1);
}

.file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.file-upload-placeholder {
    pointer-events: none;
}

.file-upload-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 10px;
}

.file-upload-text {
    display: block;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 5px;
}

.file-upload-hint {
    display: block;
    font-size: 12px;
    color: var(--text-light);
}

.file-preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.file-preview-item {
    position: relative;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-white);
}

.file-preview-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
}

.file-preview-icon {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    background: var(--bg-color);
}

.file-preview-name {
    display: block;
    padding: 10px;
    font-size: 12px;
    color: var(--text-color);
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.file-preview-size {
    display: block;
    padding: 0 10px 10px;
    font-size: 11px;
    color: var(--text-light);
}

.file-preview-remove {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(214, 54, 56, 0.9);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.file-preview-remove:hover {
    background: var(--error-color);
    transform: scale(1.1);
}

/* Search and Filter */
.search-filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 200px;
}

.filter-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-block;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
    min-width: 40px;
    text-align: center;
}

.pagination a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.stat-label {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-color);
}

/* Toast Notifications */
#toastContainer {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.toast {
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 15px;
    animation: slideIn 0.3s ease;
    border-left: 4px solid;
    min-width: 300px;
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--error-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

.toast.info {
    border-left-color: var(--info-color);
}

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.toast.success .toast-icon {
    color: var(--success-color);
}

.toast.error .toast-icon {
    color: var(--error-color);
}

.toast.warning .toast-icon {
    color: var(--warning-color);
}

.toast.info .toast-icon {
    color: var(--info-color);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.toast-message {
    font-size: 13px;
    color: var(--text-light);
}

.toast-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-light);
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-close:hover {
    color: var(--text-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.toast.hiding {
    animation: slideOut 0.3s ease forwards;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.loading-spinner {
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

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

/* Footer */
.app-footer {
    background: white;
    padding: 20px;
    text-align: center;
    color: var(--text-light);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary-color);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
    }

    .main-nav.active {
        display: flex;
    }

    .nav-link {
        width: 100%;
        padding: 12px;
    }

    .header-content {
        position: relative;
    }

    .header-right {
        flex-direction: column;
        gap: 10px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .search-filter-bar {
        flex-direction: column;
    }

    .search-box {
        width: 100%;
    }

    .table-container {
        overflow-x: scroll;
    }

    table {
        min-width: 600px;
    }

    #toastContainer {
        left: 20px;
        right: 20px;
        max-width: none;
    }

    .toast {
        min-width: auto;
    }

    .app-main {
        padding: 15px;
    }

    .card {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 20px;
    }

    .card-title {
        font-size: 18px;
    }

    .stat-value {
        font-size: 24px;
    }

    th, td {
        padding: 8px 10px;
        font-size: 13px;
    }
}

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.chart-card {
    background: var(--bg-white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Widgets */
.widgets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.widget-card {
    background: var(--bg-white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.widget-header {
    background: var(--primary-color);
    color: white;
    padding: 15px 20px;
}

.widget-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.widget-content {
    padding: 20px;
}

.quick-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.quick-stat:last-child {
    border-bottom: none;
}

.quick-stat-label {
    color: var(--text-light);
    font-size: 14px;
}

.quick-stat-value {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 16px;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
    border: 2px solid transparent;
}

.quick-action-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.quick-action-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.quick-action-text {
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

/* Activity Feed */
.activity-feed {
    max-height: 500px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    gap: 15px;
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.activity-item:hover {
    background: var(--bg-color);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    font-size: 24px;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    border-radius: 50%;
}

.activity-content {
    flex: 1;
}

.activity-message {
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--text-color);
}

.activity-meta {
    display: flex;
    gap: 10px;
    font-size: 12px;
    color: var(--text-light);
}

.activity-user {
    font-weight: 500;
}

.activity-time {
    color: var(--text-light);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-10 {
    margin-top: 10px;
}

.mt-20 {
    margin-top: 20px;
}

.mb-10 {
    margin-bottom: 10px;
}

.mb-20 {
    margin-bottom: 20px;
}

.d-none {
    display: none;
}

.d-flex {
    display: flex;
}

.gap-10 {
    gap: 10px;
}

.gap-20 {
    gap: 20px;
}

/* Responsive Charts and Widgets */
@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .widgets-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 250px;
    }
}

/* Package Tracking Styles */
.tracking-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.info-item {
    padding: 10px 0;
}

.info-item strong {
    display: block;
    color: var(--text-light);
    font-size: 12px;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.info-item div {
    color: var(--text-color);
    font-size: 14px;
}

.package-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.info-section {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
}

.info-section h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 600;
}

.alert {
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-error {
    background: #fee;
    border: 1px solid var(--error-color);
    color: var(--error-color);
}