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

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --success: #43e97b;
    --danger: #f5576c;
    --warning: #feca57;
    --info: #4facfe;
    --dark: #2c3e50;
    --light: #f8f9fa;
    --text: #333;
    --border: #e1e8ed;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 24px;
    color: var(--primary);
}

.logo i {
    font-size: 32px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
}

.balance-display {
    background: linear-gradient(135deg, var(--success) 0%, #38f9d7 100%);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Stats Section */
.stats-section {
    padding: 40px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.stat-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.stat-icon {
    width: 70px;
    height: 70px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
}

.stat-info h3 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
}

.stat-info p {
    color: #7f8c8d;
    font-size: 14px;
    margin-top: 5px;
}

/* Main Content */
.main-content {
    padding: 40px 0 60px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    background: white;
    padding: 20px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.section-header h2 {
    font-size: 24px;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Servers Grid */
.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.server-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.server-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.server-card.upgraded::before {
    background: linear-gradient(90deg, #f093fb, #f5576c);
}

.server-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.server-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.server-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.server-title h3 {
    font-size: 20px;
    color: var(--dark);
}

.server-type-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.server-type-badge.upgraded {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
}

.server-type-badge.basic {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
}

.server-actions {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: none;
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 16px;
}

.icon-btn:hover {
    background: var(--light);
    transform: scale(1.1);
}

.server-info {
    display: grid;
    gap: 15px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--light);
    border-radius: 10px;
}

.info-label {
    font-size: 13px;
    color: #7f8c8d;
    font-weight: 500;
}

.info-value {
    font-weight: 600;
    color: var(--dark);
}

.status-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.status-badge i {
    font-size: 10px;
}

.status-badge.online {
    background: #d4edda;
    color: #155724;
}

.status-badge.offline {
    background: #f8d7da;
    color: #721c24;
}

.status-badge.overload {
    background: #fff3cd;
    color: #856404;
}

.status-badge.active {
    background: #d1ecf1;
    color: #0c5460;
}

.status-badge.inactive {
    background: #e2e3e5;
    color: #383d41;
}

.generation-rate {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.generation-link {
    display: block;
    padding: 12px;
    background: var(--light);
    border-radius: 8px;
    font-size: 12px;
    color: var(--primary);
    text-decoration: none;
    word-break: break-all;
    transition: all 0.3s ease;
    margin-top: 15px;
}

.generation-link:hover {
    background: var(--primary);
    color: white;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

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

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

.btn-success {
    background: linear-gradient(135deg, var(--success), #38f9d7);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #fa709a);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning), #ff9a56);
    color: white;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
    padding: 25px 30px;
    border-bottom: 2px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 20px 20px 0 0;
}

.modal-header h2 {
    font-size: 22px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.close {
    font-size: 32px;
    font-weight: 300;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.modal-body {
    padding: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
}

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

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

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 25px;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    padding: 16px 24px;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    transition: bottom 0.4s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
}

.toast.show {
    bottom: 30px;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.info {
    border-left: 4px solid var(--info);
}

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .logo h1 {
        font-size: 20px;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .modal-content {
        width: 95%;
    }
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid var(--light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Login Screen */
.login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.login-container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.5s ease;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 60px;
    color: var(--primary);
    margin-bottom: 15px;
}

.login-header h2 {
    color: var(--dark);
    font-size: 28px;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer a {
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.login-footer a:hover {
    color: var(--secondary);
    transform: translateX(-5px);
}

.btn-block {
    width: 100%;
    justify-content: center;
    margin-top: 20px;
}

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

.admin-link {
    background: linear-gradient(135deg, var(--warning), #ff9a56);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

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