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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #38ef7d;
    --danger-color: #f5576c;
    --info-color: #4facfe;
    --warning-color: #f6d365;
    --dark: #2d3436;
    --light: #f5f6fa;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo h1 {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 5px;
}

.tagline {
    color: #666;
    font-size: 0.9rem;
}

/* Navigation */
nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-btn {
    padding: 10px 20px;
    border: none;
    background: linear-gradient(135deg, #e0e0e0, #f0f0f0);
    color: var(--dark);
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

/* Content Area */
.content-area {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 30px;
    min-height: 600px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.5s ease;
}

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

.page-content {
    display: none;
}

.page-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light);
}

.page-header h2 {
    font-size: 1.8rem;
    color: var(--dark);
}

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

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 25px;
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    text-align: center;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.3);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 10px;
    opacity: 0.9;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #11998e, var(--success-color));
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #f093fb);
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color), #00c9ff);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #fda085);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

/* Tables */
.table-container {
    overflow-x: auto;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

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

th {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

td {
    padding: 15px;
    border-bottom: 1px solid #e0e0e0;
}

tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-active {
    background: linear-gradient(135deg, #11998e, var(--success-color));
    color: white;
}

.badge-paused {
    background: linear-gradient(135deg, var(--warning-color), #fda085);
    color: white;
}

.badge-completed {
    background: #e0e0e0;
    color: #666;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

.modal-content.large {
    max-width: 800px;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 2px solid var(--light);
}

.modal-header h3 {
    font-size: 1.5rem;
    color: var(--dark);
}

.close {
    font-size: 2rem;
    color: #999;
    cursor: pointer;
    transition: var(--transition);
}

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

.modal-content form {
    padding: 30px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 20px 30px;
    border-top: 2px solid var(--light);
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #11998e, var(--success-color));
    color: white;
    padding: 15px 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: notificationSlide 0.3s ease;
    z-index: 2000;
    display: none;
    max-width: 400px;
}

.notification.error {
    background: linear-gradient(135deg, var(--danger-color), #f093fb);
}

.notification.show {
    display: block;
}

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

/* Filters */
.filters {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

.filter-select {
    min-width: 150px;
}

/* Chart Container */
.chart-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

#activityChart {
    height: 250px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 10px;
    padding: 20px 0;
}

.chart-bar {
    flex: 1;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 8px 8px 0 0;
    position: relative;
    min-height: 20px;
    transition: var(--transition);
    cursor: pointer;
}

.chart-bar:hover {
    opacity: 0.8;
    transform: scaleY(1.05);
}

.chart-label {
    position: absolute;
    bottom: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    color: #666;
    white-space: nowrap;
}

.chart-tooltip {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.chart-bar:hover .chart-tooltip {
    opacity: 1;
}

/* Tracking Links */
.tracking-link-container {
    background: #f8f9fa;
    border: 2px solid #e0e0e0;
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 15px 0;
}

.tracking-link-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.tracking-link {
    background: white;
    padding: 12px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    word-break: break-all;
    border: 1px solid #e0e0e0;
    margin-bottom: 10px;
}

.copy-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* Report Sections */
.report-section {
    margin: 40px 0;
}

.report-section h3 {
    margin-bottom: 20px;
    color: var(--dark);
    font-size: 1.3rem;
}

.date-range {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.date-range label {
    margin-bottom: 0;
    font-weight: 600;
}

.date-range input[type="date"] {
    width: auto;
    min-width: 150px;
}

/* Quick Actions */
.quick-actions {
    margin-top: 30px;
}

.action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.3;
}

.empty-state h3 {
    color: #666;
    margin-bottom: 10px;
}

.empty-state p {
    margin-bottom: 20px;
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 15px 20px;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    nav {
        justify-content: center;
        width: 100%;
    }
    
    .nav-btn {
        flex: 1;
        min-width: 100px;
        font-size: 0.9rem;
        padding: 8px 15px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .page-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .page-header h2 {
        font-size: 1.5rem;
    }
    
    table {
        font-size: 0.9rem;
    }
    
    th, td {
        padding: 10px;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .search-input {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .nav-btn {
        min-width: auto;
        flex: auto;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}