:root {
    --primary-color: #5865F2;
    --primary-hover: #4752C4;
    --secondary-color: #4E5D94;
    --success-color: #57F287;
    --danger-color: #ED4245;
    --warning-color: #FEE75C;
    --background: #36393F;
    --background-secondary: #2F3136;
    --background-tertiary: #202225;
    --text-primary: #FFFFFF;
    --text-secondary: #B9BBBE;
    --border-color: #202225;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background-color: var(--background-tertiary);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
}

/* Content */
.content {
    flex: 1;
    padding: 40px 0;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.4);
}

.btn-primary:disabled {
    background-color: var(--secondary-color);
    cursor: not-allowed;
    opacity: 0.5;
}

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

.btn-secondary:hover {
    background-color: #3d4a7a;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 80px 0;
    background: linear-gradient(135deg, var(--background-secondary), var(--background-tertiary));
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.hero-content p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* Features */
.features {
    padding: 60px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--background-secondary);
    padding: 40px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    gap: 20px;
}

.dashboard-header h1 {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 0;
}

.dashboard-container h1 {
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.server-card {
    background-color: var(--background-secondary);
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.server-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.3);
}

.server-card-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.server-card-disabled:hover {
    border-color: transparent;
    transform: none;
    box-shadow: none;
}

.server-icon img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
}

.server-icon-placeholder {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: var(--background-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--text-secondary);
}

.server-info {
    flex: 1;
}

.server-info h3 {
    margin-bottom: 8px;
}

.server-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    padding: 4px 12px;
    border-radius: 20px;
}

.server-status-active {
    background-color: rgba(87, 242, 135, 0.1);
    color: var(--success-color);
}

.server-status-expired {
    background-color: rgba(237, 66, 69, 0.1);
    color: var(--danger-color);
}

.server-arrow {
    font-size: 24px;
    color: var(--text-secondary);
}

/* Shop */
.shop-container {
    max-width: 1400px;
}

.shop-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.shop-header h1 {
    display: flex;
    align-items: center;
    gap: 15px;
}

.category-section {
    margin-bottom: 40px;
}

.category-title {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.item-card {
    background-color: var(--background-secondary);
    border-radius: 10px;
    padding: 20px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.item-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.item-header {
    margin-bottom: 15px;
}

.item-name {
    font-size: 18px;
    margin-bottom: 8px;
}

.item-price {
    font-size: 20px;
    font-weight: bold;
    color: var(--success-color);
}

.item-quantity {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.item-quantity label {
    font-size: 14px;
    color: var(--text-secondary);
}

.quantity-input {
    width: 100%;
    padding: 10px;
    background-color: var(--background-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-primary);
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.quantity-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Purchase Summary */
.purchase-summary {
    position: sticky;
    bottom: 0;
    background-color: var(--background-tertiary);
    padding: 20px;
    border-top: 3px solid var(--primary-color);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
}

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

.summary-total {
    font-size: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 15px;
}

.total-amount {
    color: var(--success-color);
}

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background-color: var(--background-secondary);
    border-radius: 10px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-close {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    transition: color 0.3s ease;
}

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

.modal-body {
    padding: 20px;
    overflow-y: auto;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 64px;
    margin-bottom: 20px;
}

.empty-state h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-error {
    background-color: rgba(237, 66, 69, 0.2);
    border-left: 4px solid var(--danger-color);
    color: var(--danger-color);
}

.alert-success {
    background-color: rgba(87, 242, 135, 0.2);
    border-left: 4px solid var(--success-color);
    color: var(--success-color);
}

/* Footer */
.footer {
    background-color: var(--background-tertiary);
    padding: 20px 0;
    text-align: center;
    color: var(--text-secondary);
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 32px;
    }
    
    .servers-grid {
        grid-template-columns: 1fr;
    }
    
    .items-grid {
        grid-template-columns: 1fr;
    }
    
    .summary-content {
        flex-direction: column;
    }
    
    .shop-header {
        flex-direction: column;
        align-items: flex-start;
    }
}