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

:root {
    --primary-dark: #0a0a1a;
    --secondary-dark: #12122a;
    --accent-blue: #4a90ff;
    --accent-purple: #9b59b6;
    --accent-cyan: #00d4ff;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --gradient-1: linear-gradient(135deg, #4a90ff 0%, #9b59b6 100%);
    --card-bg: rgba(20, 20, 50, 0.8);
    --border-color: rgba(74, 144, 255, 0.3);
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--primary-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

.admin-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: var(--secondary-dark);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    position: fixed;
    height: 100vh;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 25px 30px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 25px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(74, 144, 255, 0.1);
    color: var(--text-primary);
    border-left-color: var(--accent-blue);
}

.nav-icon {
    font-size: 1.2rem;
}

.main-content {
    flex: 1;
    margin-left: 250px;
    padding: 30px;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 1.8rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.user-info {
    color: var(--text-secondary);
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    font-size: 2.5rem;
}

.stat-info h3 {
    font-size: 2rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-info p {
    color: var(--text-secondary);
    margin-top: 5px;
}

.recent-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
}

.recent-section h2 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.recent-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.recent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.recent-item-info h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.recent-item-info p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.section-header h2 {
    font-size: 1.5rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(74, 144, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85rem;
    border-radius: 5px;
}

.btn-danger {
    background: var(--danger);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.85rem;
}

.software-table-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    overflow: hidden;
}

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

.data-table th,
.data-table td {
    padding: 15px 20px;
    text-align: left;
}

.data-table th {
    background: rgba(0, 0, 0, 0.3);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.data-table td {
    border-bottom: 1px solid var(--border-color);
}

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

.data-table tr:hover td {
    background: rgba(74, 144, 255, 0.05);
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
}

.status-active {
    background: rgba(39, 174, 96, 0.2);
    color: var(--success);
}

.status-inactive {
    background: rgba(231, 76, 60, 0.2);
    color: var(--danger);
}

.action-buttons {
    display: flex;
    gap: 10px;
}

.company-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 25px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    padding: 30px;
}

.modal-content h2 {
    margin-bottom: 25px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 25px;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.close-modal:hover {
    color: var(--accent-blue);
}

.upload-section {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 25px;
}

.upload-section h3 {
    margin-bottom: 15px;
    font-size: 1rem;
}

.files-section h3 {
    margin-bottom: 15px;
    font-size: 1rem;
}

.files-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.file-info h4 {
    font-size: 0.95rem;
    margin-bottom: 5px;
}

.file-info p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.no-data {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

.progress-container {
    margin: 20px 0;
}

.progress-bar-bg {
    width: 100%;
    height: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--gradient-1);
    border-radius: 10px;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    margin-top: 8px;
    color: var(--accent-cyan);
    font-size: 0.9rem;
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}