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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --accent-color: #667eea;
    --success-color: #48bb78;
    --border-radius: 20px;
    --shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    --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: var(--primary-gradient);
    min-height: 100vh;
    padding: 20px;
    overflow-x: hidden;
    color: var(--text-primary);
}

.container {
    max-width: 440px;
    margin: 0 auto;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 30px;
}

.header-content h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.header-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    font-weight: 500;
}

/* Profile Card */
.profile-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Profile Header */
.profile-header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.avatar-section {
    position: relative;
    margin-right: 20px;
}

.profile-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    object-fit: cover;
    transition: var(--transition);
}

.profile-avatar:hover {
    transform: scale(1.05);
}

.default-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid white;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    font-size: 32px;
}

.online-indicator {
    position: absolute;
    bottom: 5px;
    right: 5px;
    width: 16px;
    height: 16px;
    background: var(--success-color);
    border: 2px solid white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(72, 187, 120, 0.4);
}

.profile-info h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.fid-section {
    display: flex;
    align-items: center;
    gap: 8px;
}

.fid-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.fid-value {
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    background: linear-gradient(135deg, #f7fafc, #edf2f7);
    padding: 6px 12px;
    border-radius: 12px;
    font-weight: 700;
    color: var(--text-primary);
    border: 1px solid #e2e8f0;
    font-size: 14px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 25px;
}

.stat-card {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: var(--transition);
    cursor: pointer;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    font-size: 24px;
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
    transition: var(--transition);
}

.stat-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* User Details */
.user-details {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 25px;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.detail-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-item:first-child {
    padding-top: 0;
}

.detail-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.detail-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.badge {
    background: var(--success-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Actions */
.actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.btn {
    padding: 16px 20px;
    border: none;
    border-radius: 14px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), #764ba2);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 2px solid #e2e8f0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-icon {
    font-size: 16px;
}

/* Info Footer */
.info-footer {
    text-align: center;
    margin-top: 20px;
}

.info-footer p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    font-weight: 500;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 14px 24px;
    border-radius: 14px;
    transition: var(--transition);
    z-index: 1000;
    backdrop-filter: blur(20px);
    max-width: 300px;
    text-align: center;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast.error {
    background: rgba(239, 68, 68, 0.9);
}

.toast.info {
    background: rgba(59, 130, 246, 0.9);
}

/* Animations */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Responsive Design */
@media (max-width: 480px) {
    body {
        padding: 15px;
    }
    
    .container {
        max-width: 100%;
    }
    
    .profile-card {
        padding: 25px 20px;
        border-radius: 18px;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
        margin-bottom: 25px;
    }
    
    .avatar-section {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .profile-avatar,
    .default-avatar {
        width: 80px;
        height: 80px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .stat-card {
        padding: 18px;
    }
    
    .actions {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 14px 18px;
    }
    
    .header-content h1 {
        font-size: 24px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --card-bg: rgba(45, 55, 72, 0.95);
        --text-primary: #f7fafc;
        --text-secondary: #cbd5e0;
    }
    
    .fid-value {
        background: linear-gradient(135deg, #2d3748, #4a5568);
        color: #f7fafc;
        border-color: #4a5568;
    }
    
    .stat-card,
    .user-details {
        background: linear-gradient(135deg, #2d3748, #4a5568);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .btn-secondary {
        background: #4a5568;
        color: #f7fafc;
        border-color: #718096;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}